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Is Vallejo Tap Water Safe to Drink?

Yes! Generally Safe to Drink*

LAST UPDATED: 7:47 pm, August 4, 2022
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Table of Contents

Can You Drink Tap Water in Vallejo?

Yes, Vallejo's tap water is generally considered safe to drink as Vallejo 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 or the city's water provider website.

According the EPA’s ECHO database, from April 30, 2019 to June 30, 2022, Vallejo's water utility, City of Vallejo, 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 Vallejo 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 Vallejo Tap Water

The most recent publicly available numbers for measured contaminant levels in Vallejo 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 Vallejo's water quality reports, or getting your home's tap water tested to see if you should be filtering your water.

Vallejo 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 Vallejo for Vallejo in California. For more details please see the "What do these Violations Mean?" section below.

Is there Lead in Vallejo Water?

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

While Vallejo 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 Vallejo 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 - Mare Island NSY - near Vallejo 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 Vallejo 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.

Vallejo Water - Frequently Asked Questions

HOW DO I CONTACT VALLEJO CUSTOMER SERVICE?
To contact customer service for the Vallejo water provider, City of Vallejo, please use the information below.
By Phone: 707-648-4308
By Email: mike.malone@cityofvallejo.net
By Mail: 202 Flemming Hill Road
VALLEJO, CA, 94589-2237
HOW TO PAY BILL FOR CITY OF VALLEJO
Already have an account?

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

Want to create a new account?

If you want to pay your City of Vallejo 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 Vallejo 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 Vallejo 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.

HOW TO START & STOP VALLEJO WATER SERVICE
Starting Your Service

Moving to a new house or apartment in Vallejo means you will often need to put the water in your name with City of Vallejo. 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 Vallejo means you will likely need to take your name off of the water bill with City of Vallejo. 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

The estimated price of bottled water

$2.29 in USD (1.5-liter)

USER SUBMITTED RATINGS

Vallejo tap water
  • Drinking Water Pollution and Inaccessibility 50% Moderate
  • Water Pollution 50% Moderate
  • Drinking Water Quality and Accessibility 50% Moderate
  • Water Quality 50% Moderate

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

Related FAQS

Vallejo 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 Vallejo's Water. If you would like to see the original version of the report, please click here.

Annual

Water Quality

Report

Water Testing Performed in 2019

City of Vallejo System, CA4810007

City of Vallejo Lakes System, CA4810021

30073-I-0037

The City of Vallejo welcomes this yearly opportunity to provide our customers with the Annual Water Quality Report. We have included information so you know where your

drinking water comes from, how it is treated and how its quality com- pares to drinking water standards.

This report contains information from water quality testing in 2019 and shows how your water compares with primary and secondary standards established by the State Water Resources Control Board and the U.S. Environmental Protection Agency (USEPA). Primary standards are health related standards whereas secondary standards relate to consumer acceptance of the water supply and govern qualities such as taste, odor and color.

The tables in this report show each constituent found, the level at which they occur, how their level compares with standards and their most likely source. For more information about this report, or for any questions relating to your drinking water, please call Danielle Bonham, City of Vallejo, Water Quality Manager, at (707) 649-3473.

Public Participation

You are invited to participate in our public forum and voice your opinions and concerns about your drinking water. The Vallejo City Council meets on various Tuesdays, throughout the year, at 7:00 p.m. at 555 Santa Clara Street, Vallejo. You may call the City Clerk at (707) 648-4527 for specific meeting dates.

Your Water Treatment Process

The City of Vallejo water system and service area receives its fin- ished water from the forty-two million gallons per day Fleming Hill Water Treatment Plant. This conventional treatment facility utilizes a multi-barrier process to ensure compliance with all State and Federal drinking water regulations and standards.

Initially, ozone is added to help remove dissolved organic matter and to aid in downstream processes. The water then flows to mixing basins where coagulants are added and the water is gently agitated so that fine suspended particles come together to form large ‘floc’ particles that settle out of the water. This process, known as coagu- lation, flocculation and sedimentation is followed by the addition of more ozone to disinfect and remove unwanted color, taste and odor.

The next step is filtration, where the water flows through multimedia filters consisting of granular activated carbon and sand in order to meet strict standards for clarity and to reduce the levels of microbial contaminants that could be in the untreated source water. Following filtration, the water receives additions of caustic soda, for pH and alkalinity control; fluoride, for the prevention of dental caries; and finally, chlorine to provide microbial protection throughout Vallejo’s distribution system. Quality control and assurance is maintained at all times through uniform adherence to standard operating proce- dures and a meticulous schedule of laboratory analyses.

The City of Vallejo Lakes System’s Green Valley Water Treatment Plant, which provides water service to the Lakes service area, can treat up to one million gallons a day.

First, the MIEX™ pretreatment process removes naturally occurring dissolved organic matter. This treatment, using ion exchange resin, enables us to meet the Disinfectant/Disinfection By-products Rule by sufficiently lowering the levels of total organic carbon, therefore limiting the formation of disinfection by-products such as total tri- halomethanes. Total trihalomethanes are chemicals formed over time in the distribution system when dissolved organic matter com- bines with chlorine. Regulations require we use chlorine to disinfect surface water.

The treatment plant’s conventional treatment process uses polymer to promote coagulation, flocculation and sedimentation that remove the majority of soil particles from the water. Then, the water gravity flows through multimedia filters consisting of anthracite and sand so that it will meet clarity standards required to decrease microbial con- taminants and to aid the disinfection process. Depending on which

water source or blend of sources we are treating (Lakes Madigan and Frey and/or Putah South Canal), we may add soda ash in order to increase alkalinity and pH. The last step of the treatment process adds chlorine to disinfect the water supply and to provide continual protection in the distribution system. This treatment plant does not add fluoride to your water.

A Message From the United States

Environmental Protection Agency

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, radioac- tive material, and can pick up substances resulting from the pres- ence of animals or from human activity.

Contaminants that may be present in source water include:

  • Microbial Contaminants, such as viruses and bacteria, which may come from sewage treatment plants, septic systems, agricultural livestock operations and wildlife;

continued on outside panel

City of Vallejo Annual Water Quality Report Water Testing Performed in 2019

Environmental Protection Agency continued from inside

  • Inorganic Contaminants, such as salts and metals, which can be naturally occurring or result from urban storm water runoff, industrial or domestic wastewater discharges, oil and gas pro- duction, mining or farming;
  • Pesticides and Herbicides, that may come from a variety of sources such as agriculture, urban storm water runoff and res- idential uses;
  • Organic Chemical Contaminants, including synthetic and volatile organic chemicals, which are by-products of industri- al processes and petroleum production, and can also come from gas stations, urban storm water runoff, agricultural appli- cations and septic systems; and
  • 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, the U.S. Environmental Protection Agency (USEPA) 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 must provide the same protection for public health.

Drinking water, including bottled water, may reasonably be expect- ed 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 USEPA's Safe Drinking Water Hotline at 1-800-426-4791.

Este informe contiene información muy importante sobre su agua potable. Tradúzcalo ó hable con alguien que lo entienda bien.

Mahalaga ang impormasyong ito. Mangyaring ipasalin ito.

(707) 648-4307

Printed on Recycled Paper

Your Water Sources

The City of Vallejo owns and operates two permitted public water systems for the benefit of our customers in two major service areas. The City of Vallejo Water System and service area provides drinking water to customers within the city limits, to some customers in the unincorporated areas adjacent to City boundaries and to a limited number of customers in the City of American Canyon.

The City of Vallejo Water System customers are fortunate because they receive water supplies from two surface water sources. The Solano Project provides source water from Lake Berryessa, transported to our facilities by the Putah South Canal. The City also receives surface water from the State Water Project. This water, from Lake Oroville, travels through the Sacramento River to the State’s North Bay Aqueduct pumping facilities. Our source water

pumping and distribution facilities enable us to treat and deliver water from either one of these sources or to blend

these sources before treatment at the Fleming Hill Water Treatment Plant and distribution to the

Vallejo service area. The City of Vallejo Lakes System and service area is a

public water system with its

own treatment

plant and distri- bution system that delivers

drinking water to

customers residing in the Green Valley, Old Cordelia, Jameson Canyon, Suisun Valley, Willotta Oaks and Gordon Valley areas.

This system and service area also has water available from two distinct surface water sources. In addition to the Solano Project’s Lake Berryessa water delivered from the Putah South Canal by agreement with the Solano Irrigation District, this system treats water from Lakes Frey and Madigan, which are two interconnect- ed lakes owned by the City of Vallejo. The Green Valley Water Treatment Plant can either treat these two sources separately or blend these two sources before treatment and delivery to our customers. In case of emergencies, portions of this system can receive treated water from the City of Fairfield. For a copy of their Annual Water Quality Report, please call (707) 437-5386.

City of Vallejo Annual Water Quality Report Water Testing Performed in 2019

PRIMARY DRINKING WATER STANDARDS - Health Related Standards

 

 

PARAMETER/CONSTITUENTS

STATE

PHG

VALLEJO SERVICE AREA

LAKES SERVICE AREA

MAJOR SOURCES IN

 

 

 

(units of measurement)

MCL

(MCLG)

RANGE

AVG

RANGE

AVG

DRINKING WATER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INORGANICS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FLUORIDE (ppm)

2

1

0.1 - 1.1

0.8

ND - 0.1

0.1

Water additive or natural minerals

 

 

 

MICROBIAL

 

 

 

 

 

 

 

 

 

 

 

TOTAL COLIFORM (% positive samples or

5% or 1 sample

(0)

1.15

ND

1

ND

Naturally present in the environment

 

 

 

number of samples positive)

 

 

 

 

 

 

 

 

 

 

 

For the City of Vallejo Water System, no more than 5% of all samples taken during a single month may be positive for total coliform.

 

 

 

 

 

 

For the Lakes System, no more than one sample per month may be positive for total coliform bacteria.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CLARITY

 

 

 

 

 

 

 

 

 

 

 

TURBIDITY (NTU)

TT = 95% of samples 0.3

 

100% of samples 0.3

99%

100% of samples 0.3

99%

Soil runoff

 

 

 

 

Maximum 1

 

Maximum = 0.13

 

Maximum = 0.11

 

 

 

 

 

 

 

TT = % reduction 80%

 

99% - 100%

 

99% - 100%

 

 

 

 

 

 

Turbidity is a measurement of the cloudiness of the water. We monitor it because it is a good indicator of the effectiveness of our filtration system.

 

 

 

 

 

 

MCL compliance is based on all samples taken each month. All samples were in compliance.

 

 

 

 

 

 

 

 

RADIOLOGICAL

 

 

 

 

 

 

 

 

 

 

 

RADIUM 228 (pCi/L)

5

0.019

1.58 - 1.58

1.58

ND

ND

Erosion of natural deposits

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gross Alpha (pCi/L)

15

N/A

ND

ND

ND

ND

Erosion of natural deposits

 

 

 

 

 

 

 

 

 

 

 

 

 

City of Vallejo System sampled in 2019 and Lakes System sampled in 2016. The State requires us to monitor for certain substances less than once a year because their concentration does not change frequently.

DISINFECTANT

MRDL

EPG MRDLG

 

 

 

 

 

CHLORINE, Free Residual as Cl2 (ppm)

4.0*

4*

ND - 2.0

0.9

ND - 1.6

0.6

Drinking water disinfection

DISINFECTION BY-PRODUCTS

 

 

 

 

 

 

 

BROMATE (ppb)

10*

0.1

ND

ND

n/a

n/a

Drinking water disinfection

TRIHALOMETHANES, TOTAL (ppb)

80*

n/a

22 - 91

64

15 - 74

68

Drinking water disinfection

HALOACETIC ACIDS (ppb)

60*

n/a

10 - 31

20

ND - 19

15

Drinking water disinfection

DISINFECTION BY-PRODUCTS PRECURSOR

 

 

 

 

 

 

 

TOTAL ORGANIC CARBON (%Removal Ratio)

TT = Running Annual

 

All RAA 1

 

All RAA 1

 

Decay of natural organic matter

 

Average (RAA) 1*

 

minimum = 1.7

 

minimum = 2.1

 

 

 

 

 

 

 

 

 

 

*Compliance levels for the five parameters listed above are based on a running annual average determined quarterly. This means that every three months, we average all the samples taken during the prior twelve month period. Results for minimum and maximum values are based on single samples.

Monitoring for Cryptosporidium

Pertains to Lakes System Service Area Only - Notice to Customers

If you reside in the Old Cordelia service area please contact City of Fairfield at 707-437-5386 for a copy of their Annual Water Quality Report.

All residences on Willotta Drive received Vallejo Lakes System water in 2019.

PRIMARY STANDARDS—LEAD and COPPER STUDY—Monitoring of Customers’ Tap Water

PARAMETER/CONSTITUENTS

 

 

 

Vallejo

Number

Number

Lakes

Number

Number

 

 

 

 

of Homes of Homes

of Homes

of Homes

MAJOR SOURCE IN

AL

PHG

Service

Service

 

 

(units of measurement)

 

Above

Sampled

Above

Sampled

DRINKING WATER

Area

 

Area

 

 

 

 

Action

in

Action

in

 

 

 

 

 

 

 

 

 

90th %

 

90th %

 

 

 

 

 

 

Level

2018

 

Level

2017

 

COPPER (ppb at the 90th %)

1.3

0.3

ND

0

52

 

0.08

0

15

Internal corrosion of

 

household plumbing

 

 

 

 

 

 

 

 

 

 

 

 

 

LEAD (ppb at the 90th %)

15

0.2

1.4

0

52

 

ND

0

15

Internal corrosion of

 

household plumbing

 

 

 

 

 

 

 

 

 

 

 

 

 

Every three years the City is required to sample at the customers' faucets for lead and copper. This monitoring ensures our water

is not too corrosive and does not leach unsafe levels of these metals into your drinking water. Compliance measurements are from

the 90th percentile (the highest level measured from 90% of the homes sampled). The latest monitoring, for both water systems,

did not detect lead from 90% of the homes sampled.

 

 

 

 

 

 

 

 

 

 

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 City of Vallejo

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 drinking 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 Safe Drinking Water Hotline or at http://www.epa.gov/safewater/lead.

 

The City of Vallejo has complied with HSC 116277 and AB 746: Lead Testing of Drinking Water in California Schools.

SECONDARY DRINKING WATER STANDARDS

- Aesthetics Related Standards

 

 

 

 

 

 

VALLEJO SERVICE

LAKES SERVICE

 

PARAMETER/CONSTITUENTS

STATE

 

 

PHG or

 

MAJOR SOURCES IN

 

 

 

AREA WATER

AREA WATER

(units of measurement)

MCL

 

 

(MCLG)

 

DRINKING WATER

 

 

 

 

 

 

 

 

RANGE

AVG

 

 

 

RANGE

 

AVG

 

 

 

 

 

 

 

 

 

 

 

Special Health Concerns

Some people may be more vulnerable to contaminants in drinking water than the general population. Immunocompromised persons such as persons with cancer undergoing chemotherapy, persons who 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. The USEPA/Centers for Disease Control (CDC) guidelines on appropri- ate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline at 1-800-426-4791.

Source Water Assessments and Vulnerability Summaries

Source Water Assessments evaluate the quality of the water used as a drinking water supply for local communities and examine the water’s vulnerability to possible contamination from activities within the watershed. Source Water Assessments were completed in 2012 for the Putah South Canal and in 2016 for Lakes Frey and Madigan. The North Bay Aqueduct’s (Sacramento Delta) assessment was completed in 2016. The adjacent table summarizes the vulnerability of each water source and provides a contact name if you would like copies of the complete assessments.

Vulnerability Assessments Table

Source

 

Most Vulnerable

 

Moderately Vulnerable

 

Contact

 

Activities

 

Activities

 

 

 

 

 

 

 

 

Illegal body contact*

 

Other animal

 

John Palesi

Lakes Frey and Madigan

 

Wild animal access*

 

operations

 

City of Vallejo

CHLORIDE (ppm)

ODOR-THRESHOLD (units)

SPECIFIC CONDUCTANCE (µS/cm)

SULFATE (ppm)

TOTAL DISSOLVED SOLIDS (ppm)

SODIUM (ppm)

TOTAL HARDNESS (ppm as CaCOaC03) 3

TOTAL HARDNESS

(grains/gallon as CaCO3) 3

500

 

none

9

- 43

13

22 - 110

 

32

 

Natural minerals

3

 

none

 

ND

 

ND

 

ND - 1

ND

 

Natural organic matter

1,600

 

none

110

- 500

250

320 - 650

 

380

 

Natural minerals

500

 

none

21

- 62

23

6 -

23

 

13

 

Natural minerals

1,000

 

none

110

- 300

150

98 -

360

 

220

 

Natural minerals

MONITORING FOR SODIUM and HARDNESS

 

 

 

 

 

none

 

none

 

24

 

24

 

24

 

 

24

 

Natural minerals

none

 

none

 

60 -187

 

71

 

59 - 199

 

144

 

Natural minerals

none

none

4 - 10

4

3 - 12

 

8

 

Natural minerals

 

 

Agricultural drainage*

 

Wildfires

(707) 648-4519

 

 

 

 

 

 

 

 

 

Illegal activities/

 

Road/Streets

 

Alex Rabidoux

Putah South Canal

 

Dumping

 

Storm drain discharge

 

Solano County Water Agency

 

 

Herbicide applications

 

Recreational area

(707) 451-6090

 

 

 

 

 

 

 

 

 

Grazing animals*

 

Runoff from

 

Alex Rabidoux

North Bay Aqueduct

 

Runoff from

 

 

Solano County Water Agency

 

 

agricultural land

 

 

 

grazing land

 

(707) 451-6090

 

 

 

 

*Associated with detected contaminants

USEPA Unregulated Chemical Monitoring Requirements

Throughout 2018, the USEPA required all large public water systems to monitor for additional chemicals, not yet regulated. The purpose of this monitoring identifies the occurrence and levels of these chemicals in the public water supply. The USEPA uses this information to determine whether these chemicals need to be assessed for health effects and future regulations. This table shows the chemicals found and the levels at which they occur. This monitoring program pertains only to the City of Vallejo Service area.

CHEMICAL

 

RANGE

1 HAA5 (dibromoacetic acid, dichloroacetic acid, monobromoacetic acid, monochloroacetic acid, trichloroacetic acid);

Manganese (ppb)

Total HAA51 (ppb)

Total HAA6Br2 (ppb)

Total HAA93 (ppb)

ND - 1.9

  1. - 23
  1. - 8.1
    11 - 30

2 HAA6Br (bromochloroacetic acid, bromodichloroacetic acid, dibromoacetic acid, chlorodibromoacetic acid, monobromoacetic acid, tribromoacetic acid);

3 HAA9 (bromochloroacetic acid, bromodichloroacetic acid, chlorodibromoacetic acid, dibromoacetic acid, dichloroacetic acid, monobromoacetic acid, monochloroacetic acid, tribromoacetic acid, and trichloroacetic acid).

DEFINITION OF TERMS USED IN THIS REPORT

AL-Regulatory Action Level:

The concentration of a contaminant which, if exceeded, triggers treatment or other require- ments which a water system must follow.

Level 1 Assessment:

A study of the water system to identify potential problems and determine (if possible) why total coliform have been found in our water system.

MCL-Maximum Contaminant Level:

The highest level of a 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 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.

n/a: Not applicable

ND: Not detected NTU-Nephelometric Turbidity Units:

Particles in water that make it appear cloudy

pCi/L: picoCuries per liter: A measure of radioactivity

PHG-Public Health Goal:

The level of a contaminant in drinking water below

which there is no known or expected risk to health. PHGs are set by the California EPA.

ppb: parts per billion or micrograms per liter (ug/L)

ppm: parts per million or milligrams per liter (mg/L)

Primary Drinking Water Standards:

MCLs for contaminants that affect health along with their monitoring and reporting requirements, and water treatment requirements.

Secondary Drinking Water Standards:

MCLs for aesthetic characteristics of water (such as color, taste, and odor) that may affect the consumer’s acceptance of their water supply.

TT-Treatment Technique:

A required process intended to reduce the level of a contaminant in drinking water.

µS/cm-Microsiemens per Centimeter:

A measure of electrical conductivity

City of Vallejo

Water Conservation

Program

Contact us for information on free water-saving devices and services or rebates to help reduce water use.

www.vallejowater.org

  1. 648-5299 or
  1. 648-4479

Contaminants


City of Vallejo

EWG's drinking water quality report shows results of tests conducted by the water utility and provided to the Environmental Working Group by the California State Water Resources Control Board, as well as information from the U.S. EPA Enforcement and Compliance History database (ECHO). For the latest quarter assessed by the U.S. EPA (January 2019 - March 2019), tap water provided by this water utility was in compliance with federal health-based drinking water standards.

Utility details

  • Serves: 118470
  • Data available: 2012-2017
  • Data Source: Surface water
  • Total: 10

Contaminants That Exceed Guidelines

  • Bromate
  • Chromium (hexavalent)
  • Radium%2C combined (-226 & -228)
  • Total trihalomethanes (TTHMs)

Other Detected Contaminants

  • Chlorate
  • Fluoride
  • Haloacetic acids (HAA5)
  • Molybdenum
  • Strontium
  • Vanadium

Reminder

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

'

According to the EPA, there are two types of water: public and private. Public water systems supply drinking water to residents in the country''s largest cities such as Los Angeles, San Francisco, Phoenix, New York City and Chicago. These systems generally contain treated municipal waste, agricultural or industrial chemicals, pharmaceuticals and pesticides. Private systems are used by rural residents and for people who live in undeveloped areas where treatment facilities are not available.

Most of these water supplies are considered "community water systems." They can either be treated at the source or distributed. If you reside in an area with a community water system, you should make sure that your tap water meets EPA standards before using it.

There are several sources of tap water. They include: surface water, groundwater, wells, springs, rivers, dams, and sewage treatment plants. Tap water is collected from faucets, toilets, showers, washing mach

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