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Is California Tap Water Safe to Drink?

Yes! Generally Safe to Drink*

LAST UPDATED: 7:51 pm, August 1, 2022
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Table of Contents

Can You Drink Tap Water in California?

Yes, California's tap water is generally considered safe to drink as California 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, California's water utility, Muni Auth of Washington Twp, had 2 non-health-based violations of the Safe Drinking Water Act. For more details on the violations, please see our violation history section below. The last violation for California was resolved on March 31, 2018. This assessment is based on the Muni Auth of Washington Twp 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.

California Tap Water Safe Drinking Water Act Violation History - Prior 10 Years

Below is a ten year history of violations for the water system named Muni Auth of Washington Twp for California in Pennsylvania. For more details please see the "What do these Violations Mean?" section below.

For the compliance period beginning Jan. 15, 2022, California had 2 non-health based Safe Drinking Water Act violations with the violation category being Reporting Violation, more specifically, the violation code was Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant codes: Revised Total Coliform Rule, Revised Total Coliform Rule.

For the compliance period beginning Oct. 6, 2018, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Public Notification Violation for NPDWR Violation which falls into the Other rule code group, and the Public Notice Rule rule code family for the following contaminant code: Public Notice.

For the compliance period beginning Aug. 26, 2018, California had 2 non-health based Safe Drinking Water Act violations with the violation category being Reporting Violation, more specifically, the violation code was Reporting, Assessment Forms (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant codes: Revised Total Coliform Rule, Revised Total Coliform Rule.

From Jan. 1, 2018 to March 31, 2018, California had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant codes: Total Haloacetic Acids (HAA5), TTHM.

For the compliance period beginning July 11, 2017, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Public Notification Violation for NPDWR Violation which falls into the Other rule code group, and the Public Notice Rule rule code family for the following contaminant code: Public Notice.

From Jan. 1, 2017 to March 31, 2017, California had 2 non-health based Safe Drinking Water Act violations with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant codes: Total Haloacetic Acids (HAA5), TTHM.

For the compliance period beginning Aug. 10, 2016, California had 2 non-health based Safe Drinking Water Act violations with the violation category being Other Violation, more specifically, the violation code was Public Notification Violation for NPDWR Violation which falls into the Other rule code group, and the Public Notice Rule rule code family for the following contaminant codes: Public Notice, Public Notice.

For the compliance period beginning June 1, 2016, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Reporting Violation, more specifically, the violation code was Report Sample Result/Fail Monitor (RTCR) which falls into the Microbials rule code group, and the Total Coliform Rules rule code family for the following contaminant code: Revised Total Coliform Rule.

For the compliance period beginning May 11, 2016, California had 2 non-health based Safe Drinking Water Act violations with the violation category being Other Violation, more specifically, the violation code was Public Notification Violation for NPDWR Violation which falls into the Other rule code group, and the Public Notice Rule rule code family for the following contaminant codes: Public Notice, Public Notice.

From April 1, 2016 to June 30, 2016, California had 1 health-based Safe Drinking Water Act violation with the violation category being Maximum Contaminant Level Violation, more specifically, the violation code was Maximum Contaminant Level Violation, Average which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: TTHM.

From April 1, 2016 to June 30, 2016, California had 1 health-based Safe Drinking Water Act violation with the violation category being Treatment Technique Violation, more specifically, the violation code was Treatment Technique Precursor Removal which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: CARBON, TOTAL.

From April 1, 2016 to June 30, 2016, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: CARBON, TOTAL.

For the compliance period beginning Feb. 10, 2016, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Other Violation, more specifically, the violation code was Public Notification Violation for NPDWR Violation which falls into the Other rule code group, and the Public Notice Rule rule code family for the following contaminant code: Public Notice.

From Feb. 1, 2016 to Feb. 29, 2016, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring of Treatment (SWTR-Filter) which falls into the Microbials rule code group, and the Surface Water Treatment Rules rule code family for the following contaminant code: Surface Water Treatment Rule.

From Feb. 1, 2016 to Feb. 29, 2016, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring, Turbidity (Enhanced SWTR) which falls into the Microbials rule code group, and the Surface Water Treatment Rules rule code family for the following contaminant code: Interim Enhanced Surface Water Treatment Rule.

From Jan. 1, 2016 to March 31, 2016, California had 2 health-based Safe Drinking Water Act violations with the violation category being Maximum Contaminant Level Violation, more specifically, the violation code was Maximum Contaminant Level Violation, Average which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant codes: TTHM, TTHM.

From Oct. 1, 2015 to Dec. 31, 2015, California had 1 health-based Safe Drinking Water Act violation with the violation category being Maximum Contaminant Level Violation, more specifically, the violation code was Maximum Contaminant Level Violation, Average which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 2 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: TTHM.

From July 1, 2015 to Sept. 30, 2015, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring and Reporting (DBP) which falls into the Disinfectants and Disinfection Byproducts Rule rule code group, and the Stage 1 Disinfectants and Disinfection Byproducts Rule rule code family for the following contaminant code: CARBON, TOTAL.

From Jan. 1, 2014 to Jan. 31, 2014, California had 1 non-health based Safe Drinking Water Act violation with the violation category being Monitoring and Reporting, more specifically, the violation code was Monitoring of Treatment (SWTR-Filter) which falls into the Microbials rule code group, and the Surface Water Treatment Rules rule code family for the following contaminant code: Surface Water Treatment Rule.

Is there Lead in California Water?

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

While California 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 California 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 no military bases near California 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 California 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.

California SDWA Violation History Table - Prior 10 Years

Compliance Period Status Health-Based? Category Code Code Rule Code Contaminant Code Rule Group Code Rule Family Code
01/15/2022 - Resolved No Reporting Violation (RPT) Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR) (4F) Revised Total Coliform Rule (111) Revised Total Coliform Rule (8000) Microbials (100) Total Coliform Rules (110)
01/15/2022 - Resolved No Reporting Violation (RPT) Reporting, Assessment Forms (RTCR) (4A) Revised Total Coliform Rule (111) Revised Total Coliform Rule (8000) Microbials (100) Total Coliform Rules (110)
10/06/2018 - Resolved No Other Violation (Other) Public Notification Violation for NPDWR Violation (75) Public Notice Rule (410) Public Notice (7500) Other (400) Public Notice Rule (410)
08/26/2018 - Resolved No Reporting Violation (RPT) Reporting, Assessment Forms (RTCR) (4A) Revised Total Coliform Rule (111) Revised Total Coliform Rule (8000) Microbials (100) Total Coliform Rules (110)
08/26/2018 - Resolved No Reporting Violation (RPT) Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR) (4F) Revised Total Coliform Rule (111) Revised Total Coliform Rule (8000) Microbials (100) Total Coliform Rules (110)
01/01/2018 - 03/31/2018 Resolved No Monitoring and Reporting (MR) Monitoring and Reporting (DBP) (27) Stage 2 Disinfectants and Disinfection Byproducts Rule (220) Total Haloacetic Acids (HAA5) (2456) Disinfectants and Disinfection Byproducts Rule (200) Stage 2 Disinfectants and Disinfection Byproducts Rule (220)
01/01/2018 - 03/31/2018 Resolved No Monitoring and Reporting (MR) Monitoring and Reporting (DBP) (27) Stage 2 Disinfectants and Disinfection Byproducts Rule (220) TTHM (2950) Disinfectants and Disinfection Byproducts Rule (200) Stage 2 Disinfectants and Disinfection Byproducts Rule (220)
07/11/2017 - Resolved No Other Violation (Other) Public Notification Violation for NPDWR Violation (75) Public Notice Rule (410) Public Notice (7500) Other (400) Public Notice Rule (410)
01/01/2017 - 03/31/2017 Resolved No Monitoring and Reporting (MR) Monitoring and Reporting (DBP) (27) Stage 2 Disinfectants and Disinfection Byproducts Rule (220) Total Haloacetic Acids (HAA5) (2456) Disinfectants and Disinfection Byproducts Rule (200) Stage 2 Disinfectants and Disinfection Byproducts Rule (220)
01/01/2017 - 03/31/2017 Resolved No Monitoring and Reporting (MR) Monitoring and Reporting (DBP) (27) Stage 2 Disinfectants and Disinfection Byproducts Rule (220) TTHM (2950) Disinfectants and Disinfection Byproducts Rule (200) Stage 2 Disinfectants and Disinfection Byproducts Rule (220)
08/10/2016 - Resolved No Other Violation (Other) Public Notification Violation for NPDWR Violation (75) Public Notice Rule (410) Public Notice (7500) Other (400) Public Notice Rule (410)
08/10/2016 - Resolved No Other Violation (Other) Public Notification Violation for NPDWR Violation (75) Public Notice Rule (410) Public Notice (7500) Other (400) Public Notice Rule (410)
06/01/2016 - Resolved No Reporting Violation (RPT) Report Sample Result/Fail Monitor (RTCR) (4B) Revised Total Coliform Rule (111) Revised Total Coliform Rule (8000) Microbials (100) Total Coliform Rules (110)
05/11/2016 - Resolved No Other Violation (Other) Public Notification Violation for NPDWR Violation (75) Public Notice Rule (410) Public Notice (7500) Other (400) Public Notice Rule (410)
05/11/2016 - Resolved No Other Violation (Other) Public Notification Violation for NPDWR Violation (75) Public Notice Rule (410) Public Notice (7500) Other (400) Public Notice Rule (410)
04/01/2016 - 06/30/2016 Resolved Yes Maximum Contaminant Level Violation (MCL) Maximum Contaminant Level Violation, Average (02) Stage 2 Disinfectants and Disinfection Byproducts Rule (220) TTHM (2950) Disinfectants and Disinfection Byproducts Rule (200) Stage 2 Disinfectants and Disinfection Byproducts Rule (220)
04/01/2016 - 06/30/2016 Resolved Yes Treatment Technique Violation (TT) Treatment Technique Precursor Removal (46) Stage 1 Disinfectants and Disinfection Byproducts Rule (210) CARBON, TOTAL (2920) Disinfectants and Disinfection Byproducts Rule (200) Stage 1 Disinfectants and Disinfection Byproducts Rule (210)
04/01/2016 - 06/30/2016 Resolved No Monitoring and Reporting (MR) Monitoring and Reporting (DBP) (27) Stage 1 Disinfectants and Disinfection Byproducts Rule (210) CARBON, TOTAL (2920) Disinfectants and Disinfection Byproducts Rule (200) Stage 1 Disinfectants and Disinfection Byproducts Rule (210)
02/10/2016 - Resolved No Other Violation (Other) Public Notification Violation for NPDWR Violation (75) Public Notice Rule (410) Public Notice (7500) Other (400) Public Notice Rule (410)
02/01/2016 - 02/29/2016 Resolved No Monitoring and Reporting (MR) Monitoring of Treatment (SWTR-Filter) (36) Surface Water Treatment Rule (121) Surface Water Treatment Rule (0200) Microbials (100) Surface Water Treatment Rules (120)
02/01/2016 - 02/29/2016 Resolved No Monitoring and Reporting (MR) Monitoring, Turbidity (Enhanced SWTR) (38) Long Term 1 Enhanced Surface Water Treatment Rule (122) Interim Enhanced Surface Water Treatment Rule (0300) Microbials (100) Surface Water Treatment Rules (120)
01/01/2016 - 03/31/2016 Resolved Yes Maximum Contaminant Level Violation (MCL) Maximum Contaminant Level Violation, Average (02) Stage 2 Disinfectants and Disinfection Byproducts Rule (220) TTHM (2950) Disinfectants and Disinfection Byproducts Rule (200) Stage 2 Disinfectants and Disinfection Byproducts Rule (220)
01/01/2016 - 03/31/2016 Resolved Yes Maximum Contaminant Level Violation (MCL) Maximum Contaminant Level Violation, Average (02) Stage 2 Disinfectants and Disinfection Byproducts Rule (220) TTHM (2950) Disinfectants and Disinfection Byproducts Rule (200) Stage 2 Disinfectants and Disinfection Byproducts Rule (220)
10/01/2015 - 12/31/2015 Resolved Yes Maximum Contaminant Level Violation (MCL) Maximum Contaminant Level Violation, Average (02) Stage 2 Disinfectants and Disinfection Byproducts Rule (220) TTHM (2950) Disinfectants and Disinfection Byproducts Rule (200) Stage 2 Disinfectants and Disinfection Byproducts Rule (220)
07/01/2015 - 09/30/2015 Resolved No Monitoring and Reporting (MR) Monitoring and Reporting (DBP) (27) Stage 1 Disinfectants and Disinfection Byproducts Rule (210) CARBON, TOTAL (2920) Disinfectants and Disinfection Byproducts Rule (200) Stage 1 Disinfectants and Disinfection Byproducts Rule (210)
01/01/2014 - 01/31/2014 Resolved No Monitoring and Reporting (MR) Monitoring of Treatment (SWTR-Filter) (36) Surface Water Treatment Rule (121) Surface Water Treatment Rule (0200) Microbials (100) Surface Water Treatment Rules (120)

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.
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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
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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
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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
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Rule Family Code Code for rule family.
  • 100 - Microbials
  • 200 - Disinfectants and Disinfection Byproducts Rule
  • 300 - Chemicals
  • 400 - Other
  • 500 - Not Regulated
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For more clarification please visit the EPA's data dictionary.

California Water - Frequently Asked Questions

HOW DO I CONTACT CALIFORNIA CUSTOMER SERVICE?
To contact customer service for the California water provider, Muni Auth of Washington Twp, please use the information below.
By Mail: 1390 FAYETTE AVE
BELLE VERNON, PA, 15012
HOW TO PAY BILL FOR MUNI AUTH OF WASHINGTON TWP
Already have an account?

Existing customers can login to their Muni Auth of Washington Twp account to pay their California water bill by clicking here.

Want to create a new account?

If you want to pay your Muni Auth of Washington Twp 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 California 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 California 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 CALIFORNIA WATER SERVICE
Starting Your Service

Moving to a new house or apartment in California means you will often need to put the water in your name with Muni Auth of Washington Twp. 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 California means you will likely need to take your name off of the water bill with Muni Auth of Washington Twp. 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

USER SUBMITTED RATINGS

California tap water
  • Drinking Water Pollution and Inaccessibility 36% Low
  • Water Pollution 48% Moderate
  • Drinking Water Quality and Accessibility 64% High
  • Water Quality 52% Moderate

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

Related FAQS

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

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