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Is Santa Rosa Tap Water Safe to Drink?

Yes! Generally Safe to Drink*

LAST UPDATED: 7:49 pm, July 22, 2022

Table of Contents

Can You Drink Tap Water in Santa Rosa?

Yes, Santa Rosa's tap water is generally considered safe to drink as Santa Rosa has no active health based violations of the Safe Drinking Water Act (SDWA) that we are aware of. Other factors such as lead piping in a home, or low levels of pollutants on immunocompromised individuals, should also be considered, however. To find more recent info we might have, you can check out our boil water notice page, the city's water provider website, or Santa Rosa's local Twitter account.

According the EPA’s ECHO database, from April 30, 2019 to June 30, 2022, Santa Rosa's water utility, City of Santa Rosa, had 0 violations of the Safe Drinking Water Act. For more details on the violations, please see our violation history section below. This assessment is based on the City of Santa Rosa water system, other water systems in the city may have different results.

While tap water that meets the EPA health guidelines generally won’t make you sick to your stomach, it can still contain regulated and unregulated contaminants present in trace amounts that could potentially cause health issues over the long-run. These trace contaminants may also impact immunocompromised and vulnerable individuals.

The EPA is reviewing if it’s current regulations around pollutant levels in tap water are strict enough, and the health dangers posed by unregulated pollutants, like PFAS.

Water Quality Report for Santa Rosa Tap Water

The most recent publicly available numbers for measured contaminant levels in Santa Rosa tap water are in its 2020 Water Quality Report. As you can see, there are levels which the EPA considers to be acceptable, but being below the maximum allowable level doesn’t necessarily mean the water is healthy.

Lead in tap water, for example, is currently allowed at up to 15ppb by the EPA, but it has set the ideal goal for lead at zero. This highlights how meeting EPA standards doesn’t necessarily mean local tap water is healthy.

EPA regulations continue to change as it evaluates the long term impacts of chemicals and updates drinking water acceptable levels. The rules around arsenic, as well as, lead and copper are currently being re-evaluated.

There are also a number of "emerging" contaminants that are not currently. For example, PFAS (Per- and polyfluoroalkyl substances), for which the EPA has issued a health advisory. PFAS are called "forever chemicals" since they tend not to break down in the environment or the human body and can accumulate over time.

We recommend looking at the contaminants present in Santa Rosa's water quality reports, or getting your home's tap water tested to see if you should be filtering your water.

Santa Rosa Tap Water Safe Drinking Water Act Violation History - Prior 10 Years

Below is a ten year history of violations for the water system named City of Santa Rosa for Santa Rosa in California. For more details please see the "What do these Violations Mean?" section below.

Is there Lead in Santa Rosa Water?

Based on the EPA’s ECHO Database, 90% of the samples taken from the Santa Rosa water system, City of Santa Rosa, between sample start date and sample end date, were at or below, 0.0 mg/L of lead in Santa Rosa water. This is 0% of the 0.015 mg/L action level. This means 10% of the samples taken from Santa Rosa contained more lead.

While Santa Rosa water testing may have found 0.0 mg/L of lead in its water, that does not mean your water source has the same amount. The amount of lead in water in a city can vary greatly from neighborhood to neighborhood, or even building to building. Many buildings, particularly older ones, have lead pipes or service lines which can be a source of contamination. To find out if your home has lead, we recommend getting you water tested.

No amount of lead in water is healthy, only less dangerous. As lead accumulates in our bodies over time, even exposure to relatively small amounts can have negative health effects. For more information, please check out our Lead FAQ page.

Are there PFAS in Santa Rosa Tap Water?

Currently, testing tap water for PFAS isn’t mandated on a national level. We do have a list of military bases where there have been suspected or confirmed leaks. There appears to be at least one military base - Hamilton Airfield - near Santa Rosa with suspected leaks.

With many potential sources of PFAS in tap water across the US, the best information we currently have about which cities have PFAS in their water is this ewg map, which you can check to see if Santa Rosa has been evaluated for yet.

Our stance is better safe than sorry, and that it makes sense to try to purify the tap water just in case.

What do these Violations Mean?

Safe Drinking Water Act Violations categories split into two groups, health based, and non-health based. Generally, health based violations are more serious, though non-health based violations can also be cause for concern.

Health Based Violations

  1. Maximum contaminant levels (MCLs) - maximum allowed contaminant level was exceeded.
  2. Maximum residual disinfectant levels (MRDLs) - maximum allowed disinfectant level was exceeded.
  3. Other violations (Other) - the exact required process to reduce the amounts of contaminants in drinking water was not followed.

Non-Health Based Violations

  1. Monitoring and reporting violations (MR, MON) - failure to conduct the required regular monitoring of drinking water quality, and/or to submit monitoring results on time.
  2. Public notice violations (Other) - failure to immediately alert consumers if there is a serious problem with their drinking water that may pose a risk to public health.
  3. Other violations (Other) - miscellaneous violations, such as failure to issue annual consumer confidence reports or maintain required records.

SDWA Table Key

Field Description
Compliance Period Dates of the compliance period.
Status Current status of the violation.
  • Resolved - The violation has at least one resolving enforcement action. In SDWIS, this indicates that either the system has returned to compliance from the violation, the rule that was violated was no longer applicable, or no further action was needed.
  • Archived - The violation is not Resolved, but is more than five years past its compliance period end date. In keeping with the Enforcement Response Policy, the violation no longer contributes to the public water system's overall compliance status. Unresolved violations are also marked as Archived when a system ceases operations (becomes inactive).
  • Addressed - The violation is not Resolved or Archived, and is addressed by one or more formal enforcement actions.
  • Unaddressed - The violation is not Resolved or Archived, and has not been addressed by formal enforcement.
show details
Health-Based? Whether the violation is health based.
Category Code
The category of violation that is reported.
  • TT - Treatment Technique Violation
  • MRDL - Maximum Residual Disinfectant Level
  • Other - Other Violation
  • MCL - Maximum Contaminant Level Violation
  • MR - Monitoring and Reporting
  • MON - Monitoring Violation
  • RPT - Reporting Violation
show details
Code A full description of violation codes can be accessed in the SDWA_REF_CODE_VALUES (CSV) table.
Contaminant Code A code value that represents a contaminant for which a public water system has incurred a violation of a primary drinking water regulation.
Rule Code Code for a National Drinking Water rule.
  • 110 - Total Coliform Rule
  • 121 - Surface Water Treatment Rule
  • 122 - Long Term 1 Enhanced Surface Water Treatment Rule
  • 123 - Long Term 2 Enhanced Surface Water Treatment Rule
  • 130 - Filter Backwash Rule
  • 140 - Ground Water Rule
  • 210 - Stage 1 Disinfectants and Disinfection Byproducts Rule
  • 220 - Stage 2 Disinfectants and Disinfection Byproducts Rule
  • 230 - Total Trihalomethanes
  • 310 - Volatile Organic Chemicals
  • 331 - Nitrates
  • 332 - Arsenic
  • 333 - Inorganic Chemicals
  • 320 - Synthetic Organic Chemicals
  • 340 - Radionuclides
  • 350 - Lead and Copper Rule
  • 410 - Public Notice Rule
  • 420 - Consumer Confidence Rule
  • 430 - Miscellaneous
  • 500 - Not Regulated
  • 111 - Revised Total Coliform Rule
show details
Rule Group Code Code that uniquely identifies a rule group.
  • 120 - Surface Water Treatment Rules
  • 130 - Filter Backwash Rule
  • 140 - Groundwater Rule
  • 210 - Stage 1 Disinfectants and Disinfection Byproducts Rule
  • 220 - Stage 2 Disinfectants and Disinfection Byproducts Rule
  • 230 - Total Trihalomethanes
  • 310 - Volatile Organic Chemicals
  • 320 - Synthetic Organic Chemicals
  • 330 - Inorganic Chemicals
  • 340 - Radionuclides
  • 350 - Lead and Copper Rule
  • 400 - Other
  • 500 - Not Regulated
  • 110 - Total Coliform Rules
  • 410 - Public Notice Rule
  • 420 - Consumer Confidence Rule
  • 430 - Miscellaneous
show details
Rule Family Code Code for rule family.
  • 100 - Microbials
  • 200 - Disinfectants and Disinfection Byproducts Rule
  • 300 - Chemicals
  • 400 - Other
  • 500 - Not Regulated
show details

For more clarification please visit the EPA's data dictionary.

Santa Rosa Water - Frequently Asked Questions

To contact customer service for the Santa Rosa water provider, City of Santa Rosa, please use the information below.
By Phone: 707-543-3975
By Email:
By Mail: 35 Stony Point Road
Already have an account?

Existing customers can login to their City of Santa Rosa account to pay their Santa Rosa water bill by clicking here.

Want to create a new account?

If you want to pay your City of Santa Rosa bill online and haven't made an account yet, you can create an account online. Please click here to create your account to pay your Santa Rosa water bill.

Want to pay without an account?

If you don't want to make an account, or can't remember your account, you can make a one-time payment towards your Santa Rosa water bill without creating an account using a one time payment portal with your account number and credit or debit card. Click here to make a one time payment.

Starting Your Service

Moving to a new house or apartment in Santa Rosa means you will often need to put the water in your name with City of Santa Rosa. In order to put the water in your name, please click the link to the start service form below. Start service requests for water bills typically take two business days.

Start Service Form

Want to create a new account?

Leaving your house or apartment in Santa Rosa means you will likely need to take your name off of the water bill with City of Santa Rosa. In order to take your name off the water bill, please click the link to the stop service form below. Stop service for water bills requests typically take two business days.

Stop Service Form

Is Santa Rosa Tap Water Safe to Drink? Tap water & safety quality

The estimated price of bottled water

$1.35 in USD (1.5-liter)


Santa Rosa tap water
  • Drinking Water Pollution and Inaccessibility 37% Low
  • Water Pollution 30% Low
  • Drinking Water Quality and Accessibility 63% High
  • Water Quality 70% High

The above data is comprised of subjective, user submitted opinions about the water quality and pollution in Santa Rosa, measured on a scale from 0% (lowest) to 100% (highest).

Related FAQS

Santa Rosa Water Quality Report (Consumer Confidence Report)

The EPA mandates that towns and cities consistently monitor and test their tap water. They must report their findings in an annual Consumer Confidence Report. Below is the most recent water quality report from Santa Rosa's Water. If you would like to see the original version of the report, please click here.

2020 Water Quality Report


A Message

from the Director:

Santa Rosa Water’s top priority is to provide our community with safe, reliable drinking water that meets or exceeds safe drinking water standards. As the world grappled with the COVID-19

Our Drinking Water from


pandemic over the past year and a half and our community dealt with local wildfires, our team of highly skilled operators, engineers, technical experts, administrative staff, and more monitored and maintained our water system 24/7 to ensure that the approximately 53,OOO homes, businesses, schools and hospitals in Santa Rosa continued to receive high-quality drinking water.

Our team has also worked diligently to protect and preserve our community’s precious water resources. In April 2O21, California Governor Gavin Newsom declared a regional drought emergency in Sonoma and Mendocino counties, following two consecutive years of below average rainfall. Lake Mendocino and Lake Sonoma, the two reservoirs that provide the majority of our region’s water supply, are at the lowest levels ever recorded.

In May, the Santa Rosa City Council adopted a resolution requesting our community voluntarily reduce water use by 2O% community-wide compared to 2O2O usage and, in coordination with the Sonoma- Marin Water Saving Partnership launched a drought campaign—Drought is here. Save Water. It is critical that we all do our part to conserve water. Actions big and small will help to save water for future use.

Santa Rosans know how to conserve water in a drought. I am optimistic that collectively we will continue to be a water savvy community and reduce our water use to protect our water supply for essential everyday needs. If you have not done so already, I encourage you to take advantage of our WaterSmart incentives and rebates to reduce water use.

Thank you for taking the time to read our 2O2O Annual Water Quality Report. This report documents our ongoing commitment to water quality, supply reliability and customer service.


Jennifer Burke

Director of Santa Rosa Water

The Russian River Watershed serves approximately 600,000 people in Sonoma and Marin Counties. It is also home to approximately 30 species of fish, three of which are listed as threatened or endangered—Chinook salmon, coho salmon, and steelhead trout.

Three reservoirs supply water to the Russian River Watershed: Lake Mendocino on the East Fork of the Russian River, Lake Sonoma on Dry Creek, and Lake Pillsbury on the Eel River which flows into Lake Mendocino through PG&E’s Potter Valley Hydroelectric Project. These reservoirs and regional groundwater wells provide water for drinking, fire protection, agriculture, industry, as well as habitat for fish and wildlife.

The Russian River, which defines the watershed, originates in Mendocino County, approximately 15 miles north of Ukiah and reaches the Pacific Ocean at Jenner, just 20 miles west of Santa Rosa. Water typically enters the watershed as rain and is either conveyed to streams, rivers, and reservoirs or seeps into the ground to recharge groundwater.

To collect water from the Russian River for most of the southern part of the watershed, Sonoma Water utilizes six collector wells that extend approximately 80 feet below the natural riverbed of the Russian River. As the water is collected, it is naturally filtered through layers of sand, gravel, and rock.

Water collected from the Russian River through deep collector wells requires no additional treatment with the exception of chlorine which is added for disinfection, and sodium hydroxide which is added

to adjust the pH of the water to reduce corrosion of lead and copper plumbing fixtures.

Water from the Russian River and our local groundwater wells are supplied to you through a complex water distribution system, the largest of which is the Sonoma Water aqueduct system. Drinking water is required by state law to be tested frequently to ensure that it meets or exceeds drinking water standards at your tap.

Water Supply


Water supplied from Santa Rosa’s Public Water system to homes and businesses is a combination of surface water from the Russian River and local groundwater.

95% Sonoma Water

(Russian river)

5% Groundwater


Testing & Monitoring

Water Quality

The United States Environmental Protection Agency (U.S. EPA) and State Water Resources Control Board (State Board), Division of Drinking Water require water providers to routinely monitor their water supplies and report test results annually. In addition to Sonoma Water’s sampling to test for over 100 different contaminants, Santa Rosa Water collects water quality samples weekly from the City’s water distribution system for testing.

Sampling frequency is based on our population and the number of services connected to the water system. Santa Rosa Water takes over 200 water system samples per month. These samples are tested for coliform bacteria (an indicator of contamination) and chlorine residuals (level of disinfection). Santa Rosa Water also takes pH samples. The results of the samples are sent to the State Board at the end of each month. Certain water sampling is required less often due to U.S. EPA regulations. Quarterly, we take trihalomethane and haloacetic acid samples based on the disinfection by- products rule, and every three years, we sample 50 residences for compliance with the lead and copper rule.

This Water Quality Report shows your water supply is carefully managed and your tap water meets or exceeds all health-based standards established by the U.S. EPA and State Board for safe drinking water.

your drinking water

is tested200times before reaching

your tap.

Your Water’s Characteristics

FLUORIDE: Santa Rosa does not add fluoride to the water supply. Fluoride naturally occurs in the water supply, however, it is below the detection level and does not provide a dental benefit.

HARDNESS: Santa Rosa Water is moderately hard at an average level detected of 112 ppm. Water that is too soft (below 30 ppm) can be corrosive to plumbing pipes, and water that is too hard (above 300 ppm) causes scale to form on plumbing fixtures and cooking utensils.

Less than 1.0


Less than 17.1



1.0 – 3.5


17.1 – 60


Slightly Hard

3.5 – 7.0


60 – 120










7.0 – 10.5


120 – 180



Over 10.5


Over 180


Very Hard






WATER CLOUDINESS: One of the many properties of water is its ability to dissolve gases, including air. Sometimes the air comes back out of the water in the form of many tiny bubbles, giving the water a temporary milky white appearance. To determine if the white color in the water is due to air, fill a clear glass with water and let it sit for a few minutes. If the white color is due to air, the water will gradually clear from bottom to top. This is completely normal; the water is safe to use.

Air bubbles dissipate from the bottom of the glass to the top in just a minute or two.


Year tests were conducted.


The Water Quality Report, also called the Consumer Confidence Report, lets you know what constituents, if any, are in your drinking water and how these constituents may affect your health. It lists all the regulated

constituents that were detected.









Santa Rosa purchased between 90-95% of











Highest amount


the drinking water from Sonoma Water and we









Detection Limit






Santa Rosa provides drinking water













of a contaminant


produce the remainder from our own groundwater



Below this level, a



for purposes of






constituent has no





EPA allows in


wells. The two sets of columns identify the


from groundwater. Chlorine is










known or expected





drinking water.


detected constituents of each source.


added for disinfection and sodium










health risk.












hydroxide for pH adjustment.


































Public Health







Goal {MCLG}









PRIMARY STANDARDS Detected Regulated Contaminants with Primary MCLs or MRDLs
































Major Source

in Drinking Water

Parts per million – One ppm is equal to 1 teaspoon in 1,300 gallons.

Parts per billion – One ppb is equal to 1 teaspoon in 1.3 million gallons.

The concentration of a constituent, which, if exceeded, triggers treatment or other requirements.

The amount from lowest to highest of a detected constituent in the drinking water.






















Runoff/leaching from fertilizer use;











leaching from septic tanks and










sewage; erosion of natural deposits






































This describes the




The average amount of












most likely ways a




a constituent detected





constituent enters the




in the drinking water.





drinking water. Wording












is provided by the EPA.





























These terms are used throughout this report

AL: Regulatory Action Level. The concentration of a contaminant which, when exceeded, triggers treatment or other requirements that a water system must follow.

DLR: Detection Limit for purposes of Reporting. Detections above this level must be reported.

MCL: Maximum Contaminant Level. The highest level of contaminant that is allowed in drinking water. Primary MCLs are set as close to the PHGs (or MCLGs) as is economically and technologically feasible. Secondary MCLs are set to protect the odor, taste, and appearance of drinking water.

MCLG: Maximum Contaminant Level Goal. The level of a contaminant in drinking water below

which there is no known or expected risk to health. MCLGs are set by the U.S. EPA.

MRDL: Maximum Residual Disinfectant Level. The highest level of a disinfectant allowed in drinking water. There is convincing evidence that the addition of a disinfectant is necessary for control of microbial contaminants.

MRDLG: Maximum Residual Disinfectant Level Goal. The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.

NA: Not applicable.

ND: Not detected. Constituent was not detected at the reporting level.

NS: No standard. Officials have not developed a Public Health Goal or MCLG standard.

NTU: Nephelometric Turbidity Units. A measure of the clarity of water. Turbidity of 5 NTU is just noticeable to the average person.

PDWS: Primary Drinking Water Standard. MCLs and MRDLs for contaminants that affect health along with their monitoring and reporting requirements, and water treatment requirements.

PHG: Public Health Goal. The level of contaminant in drinking water below which there is no known or expected risk to health. PHG’s are set by the California EPA.

MFL: million fibers per liter

pCi/L: picocuries per liter

ppm: parts per million (or milligrams per liter)

ppb: parts per billion (or micrograms per liter)

ppt: parts per trillion (or nanograms per liter)

Note: Listed in the table opposite are substances detected in the City’s drinking water. A full listing of sample results is on our website.

1 Sonoma Water has 10 different groundwater sources that can be blended together. The range detected and the reporting value are the high, low, average, and weighted average of the 6 sources that supplied water to the Santa Rosa area in 2020.

2 Santa Rosa Water data includes sampling taken in the distribution system and from source water wells.

Our two drinking water wells are sampled separately. The Manganese reporting value is after treatment.

3 Fluoridation to fight tooth decay has not been implemented in Santa Rosa. The optimal dose of fluoride in water to fight tooth decay is 0.7 ppm.

4 Radon is a radioactive gas that can get into indoor air when released from tap water from showering or running a faucet. Radon entering the home through tap water is a

very small source of radon in indoor air. EPA is proposing to require community water suppliers to provide water with radon levels no higher than 4,000 pCi/L, which contributes about 0.4 pCi/L of radon to the air in your home. More information is available at EPA website: The State allows us to monitor for some contaminants less than once per year. Our radon data for Santa Rosa’s source, though representative, was sampled in 2009.

5 Water quality data collected 2018.

6 We participated in the fourth stage of the U.S. EPA’s UCMR4 program by performing additional tests on our drinking water. UCMR4 sampling benefits the environment and public health by providing the U.S. EPA with data on the occurrence of contaminants suspected to be in drinking water in order to determine if U.S. EPA needs to introduce new regulatory standards. For more information call (800) 426-4791.

















































Public Health
















Major Source





















Goal {MCLG}














in Drinking Water




















PRIMARY STANDARDS Detected Regulated Contaminants with Primary MCLs or MRDLs



































































Fluoride (ppm)3












Erosion of natural deposits



















Runoff/leaching from fertilizer use;






Nitrate (as N ppm)






leaching from septic tanks and

























sewage; erosion of natural deposits








































































































Total Coliform Bacteria





5% of monthly













from Santa Rosa







Naturally present in the environment



Distribution System

























Total Trihalomethanes (ppb)














By-product of drinking water chlorination



Haloacetic Acids (ppb)














By-product of drinking water chlorination



Disinfectant-Free Chlorine



















(CI2) Residual (ppm)


Cl2 4.0









Disinfectant to control microbes



pH (units) prior to p57






























Sodium Hydroxide addition



Benzene (ppb)













Discharge from plastics, dyes and








nylon factories; leaching from






















gas storage tanks and landfills






















































Monitored at customer’s tap.

# of sites exceeding action level=0

# of samples collected=50


# of schools sampled=0






2019 DATA






























Copper (ppm)




1.3 (AL)









Internal corrosion of household


Lead (ppb)




15 (AL)









plumbing; erosion of natural deposits




























# of sites exceeding action level=0

# of samples collected=333

# of schools sampled=31






















SECONDARY STANDARDS Aesthetic Standards Established by the State Water Resources Control Board’s Division of Drinking Water


There are no adverse health effects from exceeding the secondary (aesthetic) standards.

Threshold Odor Number










(TON) at 60°C



Naturally occurring organic materials


Chloride (ppm)










Run-off/leaching from natural deposits


Sulfate (ppm)










Run-off/leaching from natural deposits


Specific Conductance















Substances that form ions when in water


Total Dissolved Solids (ppm)








Run-off/leaching from natural deposits


Color (units)










Naturally occurring organic materials


Manganese (ppb)










Run-off/leaching from natural deposits


































Sodium (ppm)










Sodium refers to the salt present in












water. It is naturally occurring.


Total Hardness CaCO










Erosion of natural deposits













Total Alkalinity CaCO










Erosion of natural deposits













Calcium (ppm)










Erosion of natural deposits


Total Radon 222 (pCi/L)4








Found in the soil throughout the U.S.


Temperature °C (°F)








8.8 (48) – 28 (82)


Water temp. in Distribution System






Unregulated substance monitoring helps EPA and the Division of Drinking Water determine where contaminants occur and if regulation is required.


Brominated Haloacetic Acids








By-product of drinking water chlorination


Haloacetic Acids (ppb)








By-product of drinking water chlorination


Bromide (ppb) 7










Naturally occurring element












found in surface and groundwater


Santa Rosa’s drinking water meets or exceeds all State and Federal drinking water health standards. Your water is tested weekly and the water system is carefully managed to be dependable and safe.





Outdoor Water-Saving Tips

  • Make sure all hoses have an automatic shut off nozzle.
  • Limit irrigation to the hours of 8pm to 6am.
  • Use the City’s weekly WaterSmart irrigation recommendations to update your irrigation run times weekly.
  • Replace high water use turf with low water use landscaping
  • Sweep hard surfaces instead of using water (driveways, sidewalks, patios).
  • If you need to get your car washed, go to sites that recycles the water.
  • Cover pools and spas when not in use to prevent evaporation.
  • Install a greywater system so you can reuse your laundry water to irrigate your yard.
  • Add 2-3” of mulch around plants to retain moisture and reduce weeds.

Indoor Water-Saving Tips

  • Complete a do-it-yourself WaterSmart check up.
  • Check toilets for leaks every few months.
  • Replace old showerheads, toilets, and aerators with high efficiency models.
  • Fix leaks quickly.
  • Take shorter showers.
  • Turn off the faucet while brushing teeth or shaving.
  • Only run dishwashers and clothes washers with full loads.
    For more ways to save, visit


Lead & Copper

The “lead and copper rule,” or LCR, was introduced by the U.S. Environmental Protection Agency (U.S. EPA) in 1991 to limit the concentration of lead and copper allowed in public drinking water at the consumer’s tap as well as to limit the corrosivity due to the water itself. Our water supplier, Sonoma Water, implemented the addition of sodium hydroxide to the drinking water in 1995 to increase the pH slightly as a corrosion control treatment. Higher pH levels reduce the corrosivity of the water

thereby reducing significantly the copper and lead levels. Lead originates from the solder used to connect plumbing fittings inside the home, and copper is used widely in small diameter plumbing pipe. Lead and copper levels are consistently below the action level in Santa Rosa.

If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. The Santa Rosa Water Department is responsible for providing high-quality drinking water but cannot control the variety of materials used in plumbing components. When your water has

been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to 2 minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the U.S. EPA’S Safe Drinking Water Hotline or website: 800-426-4791 or

A source water assessment of the drinking water for Sonoma Water and Santa Rosa was completed in January 2001. Specifically, the water source is considered most vulnerable to mining operations, recreational areas (surface water), septic systems, agricultural operations, and wastewater treatment and disposal. Proper filtration and treatment of the raw water is performed prior to delivery to customers. A copy of the complete assessment is available at the State Water Resources Control Board Division of Drinking Water office: 50 D Street, Suite 200, Santa Rosa, CA 95404.


The sources of drinking water (both tap water and bottled water) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over the surface of the land or through the ground, it dissolves naturally occurring minerals and, in some cases, radioactive material, and can pick up substances resulting from the presence of animals or from human activity. Contaminants that may be present in source water include the following:

  • Microbial contaminants such as viruses and bacteria that may come from wastewater treatment plants, septic systems, agricultural livestock operations, and wildlife.
  • Inorganic contaminants such as salts and metals that can be naturally occurring or result from urban storm water runoff, industrial or domestic wastewater discharges, oil and gas production, mining, or farming.
  • Pesticides and herbicides that may come from a variety of sources such as agriculture, urban storm water runoff, and residential uses.
  • Organic chemical contaminants, including synthetic and volatile organic chemicals that are by-products of industrial processes and petroleum production, and can also come from gas stations, urban storm water runoff, agricultural application, and septic systems.
  • Radioactive contaminants that can be naturally occurring or be the result of oil and gas production and mining activities.

In order to ensure that tap water is safe to drink, U.S. Environmental Protection Agency (U.S. EPA) and the State Water Resources Control Board (State Board) prescribe regulations that limit the amount of certain contaminants in water provided by public water systems. State Board regulations also establish limits for contaminants in bottled water that provide the same protection for public health.

Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the

U.S. EPA’s Safe Drinking Water Hotline: 800-426-4791.

Drinking water standards are established by both the State Board and by the U.S. EPA. Primary standards are set to protect public health from substances in water that may be immediately harmful to humans or affect their health if consumed for long periods of time. The primary drinking water standards are defined by maximum contaminant levels (MCLs) for contaminants that affect health along with their monitoring and reporting requirements and surface water treatment requirements.

Secondary standards govern aesthetic qualities of water such as taste, mineral content, odor, or clarity. These standards specify limits for substances that may influence consumer acceptance of the water and are not harmful to public health.


Precautions for Vulnerable Populations

Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons such as those with cancer undergoing chemotherapy, persons that have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice about drinking water from their health care providers. U.S. EPA/Center for Disease Control guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the U. S. EPA’s

Safe Drinking Water Hotline: 800-426-4791.


You can participate in decisions about your water . . .

For more information regarding Santa Rosa Water, you may attend the Santa Rosa Water Board of Public Utilities meetings, which are held every first and third Thursdays of the month at 1:30PM:

Santa Rosa Water, Board of Public Utilities

Santa Rosa City Hall Council Chambers

100 Santa Rosa Avenue, Santa Rosa, CA 95404

  1. 543-4200 | (707) 543-3031 TDD

To view meeting dates, agendas, including online participation and viewing instructions, go to:

For more information regarding Sonoma Water, you may attend their Board meetings, which are held every Tuesday at 8:30 AM in conjunction with the Sonoma County Board of Supervisors:

Special Districts Supervisors’ Chambers

Sonoma County Administration Building

575 Administration Drive, Room #102A, Santa Rosa, CA 95403-2887

(707) 565-2241

Web access with meeting dates and agenda:

For questions regarding water quality, please call our Water Quality Hotline at

  1. 543-3965 (TDD Public Works (707) 543-3827) or fax (707) 543-3937.
    Or email:

If you would like additional copies of this report, please contact us. We encourage business owners to provide this information to their employees.

En Español

Este folleto contiene información importante acerca de la calidad de su agua de beber. Si usted apreciaría hablar con alguien en español llame al

(707) 543-3965.


Santa Rosa Water

35 Stony Point Road, Santa Rosa, CA 95401-4446 TEL 707.543.4200

FAX 707.543.3937

TDD 707.543.3827 - Public Works

Evenings, weekends and alternate Fridays, please call 707.543.3805 or 707.528.5276 (TDD Police Department)

Web access:

It’s that time of year, and it’s more important than ever to be water smart. Start saving today with these simple tips:

  • Check your irrigation system for leaks.
  • Irrigate during pre-dawn hours.
  • Utilize free weekly watering recommendations.
  • Prioritize watering of shade trees.
  • Upgrade to a drip irrigation system


  • Transform your lawn into a low water-use landscape


  • Mulch to reduce evaporation and discourage weeds.
  • Install a graywater or rainwater
    harvesting system (REBATE AVAILABLE).

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Find us at Santa Rosa Water:



Always take extra precautions, the water may be safe to drink when it leaves the sewage treatment plant but it may pick up pollutants during its way to your tap. We advise that you ask locals or hotel staff about the water quality. Also, note that different cities have different water mineral contents.

Sources and Resources

Santa Rosa Tap Water

Santa Rosa is not a heavily populated area, making it even more critical that you get your drinking water from a reliable source. When people are looking for excellent quality water sources, they also want to know about contaminants present in the water they drink. There are many contaminants in tap water all over California. The majority of them are contained in a group of compounds called trihalomethanes (THMs). Still, a few are indifferent things such as chloroform and other volatile organic chemicals. All of these have shown evidence of causing various kinds of cancer in lab rats and women, so you must avoid them as much as possible.

One of the biggest problems with tap water in the Santa Rosa area is that a large percentage of the water that goes into your homes has been treated before it ever makes it onto your plates. This means that some of the water components were already in your plumbing when it was first sent to your home, so they are already present in your drinking water. Since most people only think of chlorine when they think of chlorine in water, you may not be aware that several other chemicals can be found in tap water in Santa Rosa.

When you are shopping for a good water purification system for the kitchen, consider purchasing a multi-stage unit that can remove all of the contaminants mentioned above. If possible, look for a water filtration system that will also remove any form of herbicide that may be present. Of course, don’t forget that you need to check the label on the bottle to ensure that the system is certified by NSF International. This certification will ensure that the system does what it is designed to do, providing safe, healthy water for your home.

Santa Rosa Water Quality

Santa Rosa water quality standards are based on the size and shape of the water body. The largest body of water in California is Lake Nakuru, northwest of the city of Santa Rosa. This lake has the lowest cost per gallon of water but still ranks relatively high as one of the nation’s premier lakes. The Santa Rosa irrigation district serves a population of nearly five million people, and it has the second-largest municipal water supply in the State. Almost all of the water from the Lake Nakuru system is treated, although it is sold off to local cities and counties at a cost that varies according to the amount of water needed.

The water that flows through the Santa Rosa system meets specific water quality criteria, although it varies from area to area. For example, most of the water that flows through the Santa Rosa system meets the EPA’s standards, the Environmental Protection Agency. However, there are still many cases when water can have harmful effects on the environment. Many chemicals, such as those used to treat the water, make their way into the local environment when it makes it through the local system. These harmful chemicals can make the water taste bad or even smell bad.

There are many different ways that you can ensure that your water is of the best quality possible:

  1. Make sure that you choose a water treatment system that will work best for your particular water quality.
  2. Research the effects of different chemicals on the environment, both before and after they are placed in water.
  3. Install a water filter that will remove the majority of these harmful toxins.

Santa Rosa Drinking Water

If you are considering buying a home in Santa Rosa, California, you may want to research your water source to be on the safe side. Believe it or not, the water that runs through most of the urban centers is no better than the water from rural areas. Likely, some of the contaminants in our tap water are more harmful than those they remove from the water supply through natural means. For instance, according to the Environmental Working Group, “Many chemicals and pollutants that have been measured in California’s water have been found in water supplies from other states.” There are many different sources for this data, but the E.W.G reports indicate that it generally holds for all states.

If you are interested in learning the best way to purify your water, you should know several different options. You can install a point-of-use water filter system at your house or even your business, depending on how much filtering you need. For instance, if you are only interested in removing chlorine and volatile organic compounds, you may want to choose a point-of-use water filter system like the Brita or PUR water filters. These will generally cost between twenty and forty dollars each. On the other hand, if you are looking for a comprehensive water purification method, you should consider using multi-stage selective filtration systems that include a carbon block, a multi-media block, and a sub-micron filter.

If you want to know what kinds of contaminants are found in your water? The Santa Rosa water report shows that there is a lot of contamination, including over two hundred different synthetic chemicals that have been detected. As if that weren’t enough to scare people away, then there are over five thousand other pesticides. There are also several different pharmaceuticals, such as hormones and antibiotics, and traces of radioactive material. Any harmful chemical substance can potentially be present in your drinking water.

Santa Rosa Water Agency

You may have heard of Santa Rosa water agency, the largest water provider in California. However, you might not know much about it other than what it can do for you if your home is in danger of being turned into a disaster zone. This article will give you some information that you need to know to ensure that you are using the right water source for your home and learn what your water agency can do for you.

The first thing you need to know is that if your home is in danger, the Santa Rosa water agency can help by setting up an emergency water supply pipeline. The water will then be sent to all different departments, from the city to the county, and then to the people affected by the flooding. You can find out more about how this works in the Santa Rosa water agency’s website’s disaster recovery section. They will also help you understand what is needed to do a proper water relief project in your area. When you face a severe problem with your water supply, it is critical to get help as soon as possible. It would help if you never waited for days, or weeks, for water to be sent to your home.

After you have gotten through your emergency, the Santa Rosa water agency can help you with what needs to be done with your water supply. If there was pollution or bad weather in your area, they could help you clean it up and use any water wisely. They can also make sure that the treatment facilities are working correctly, not risking your health by drinking unhealthy water. This water may be your last defense against flooding and other water disasters, so it is essential to make sure that it gets to you as quickly as possible.

Santa Rosa Water Systems

There is a wide range of water systems for your home if you are interested in Santa Rosa. These water systems are built for various needs and range from drinking water, bathing water, filtration of water, and even filtration of the air in your home. The different available water systems can make choosing one very difficult. Still, if you take the time to research all of the available options, it can be made much more accessible. It is important to note that when you are researching water systems for Santa Rosa, not all are created equal. If you are looking for a water system that can provide you with clean and healthy water to do your everyday activities, you will need to know what to look for in the different available water systems.

When you are researching water systems for Santa Rosa, you will want to keep in mind that many options can provide you with the water you need. You can choose from a basic water filtration system, or you can go with a more complex water system that will provide you with everything you need to have clean and healthy water. If you have pets in your home, you will also want to consider getting a water filtering system to filter out the impurities in the water that could potentially harm your pets if they were to drink or bathe in the water you supply them with. You can find many excellent water filtering systems at most hardware stores, as well as online stores. Before you spend any money on a water filtering system, it is essential to make sure that you are learning all of the facts about it so that you can make an educated decision regarding whether or not the water filtering system that you are interested in buying is going to work the way that you need it to.

Remember, water systems for Santa Rosa are not all created equal. If you are looking for a water system that can give you everything you need to do your everyday activities, you will want to know what to look for in the water filtering systems you are interested in buying. There are many great water systems available for purchase in Santa Rosa, but it is essential to do the necessary research to ensure that you are getting the water system to best suit your needs.

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