PlainEnviro

COLUSA CO. WWD #1 - GRIMES

PWSID: CA0600008 · Grimes, CA · Serves 512 people

Health Violations

COLUSA CO. WWD #1 - GRIMES has 135 health-based violations out of 135 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.

Population Served
512
Total Violations
135
Health Violations
135
Source Type
Groundwater

COLUSA CO. WWD #1 - GRIMES (PWSID CA0600008) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 512 people in Grimes, CA, and is subject to primacy enforcement by the California drinking-water program.

The system's federal compliance record contains 135 total violations, with 135 classified as health-based (MCL exceedances or treatment-technique failures). 1 distinct contaminant has been cited, including Barium. Recorded violations span 2009–2024.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.

System Details

EPA ID (PWSID)
CA0600008
System Type
CWS
Water Source
Groundwater
Location
Grimes, CA
Population Served
512
Health Violations
Yes (135)

What contaminants are in this water system?

Contaminant Violations Health-Based
Barium 135 135

Violation History (135)

Contaminant Health Date
Barium Yes Oct 1, 2024
Barium Yes Oct 1, 2024
Barium Yes Jul 1, 2024
Barium Yes Jul 1, 2024
Barium Yes Jul 1, 2024
Barium Yes Apr 1, 2024
Barium Yes Apr 1, 2024
Barium Yes Apr 1, 2024
Barium Yes Jan 1, 2024
Barium Yes Jan 1, 2024
Barium Yes Oct 1, 2023
Barium Yes Oct 1, 2023
Barium Yes Oct 1, 2023
Barium Yes Jul 1, 2023
Barium Yes Jul 1, 2023
Barium Yes Jul 1, 2023
Barium Yes Apr 1, 2023
Barium Yes Apr 1, 2023
Barium Yes Apr 1, 2023
Barium Yes Jan 1, 2023
Barium Yes Jan 1, 2023
Barium Yes Jan 1, 2023
Barium Yes Oct 1, 2022
Barium Yes Oct 1, 2022
Barium Yes Oct 1, 2022
Barium Yes Jul 1, 2022
Barium Yes Jul 1, 2022
Barium Yes Jul 1, 2022
Barium Yes Apr 1, 2022
Barium Yes Apr 1, 2022
Barium Yes Apr 1, 2022
Barium Yes Jan 1, 2022
Barium Yes Jan 1, 2022
Barium Yes Oct 1, 2021
Barium Yes Oct 1, 2021
Barium Yes Jul 1, 2021
Barium Yes Jul 1, 2021
Barium Yes Apr 1, 2021
Barium Yes Apr 1, 2021
Barium Yes Jan 1, 2021
Barium Yes Jan 1, 2021
Barium Yes Oct 1, 2020
Barium Yes Oct 1, 2020
Barium Yes Jul 1, 2020
Barium Yes Jul 1, 2020
Barium Yes Apr 1, 2020
Barium Yes Apr 1, 2020
Barium Yes Jan 1, 2020
Barium Yes Jan 1, 2020
Barium Yes Oct 1, 2019
Barium Yes Oct 1, 2019
Barium Yes Jul 1, 2019
Barium Yes Jul 1, 2019
Barium Yes Apr 1, 2019
Barium Yes Apr 1, 2019
Barium Yes Jan 1, 2019
Barium Yes Jan 1, 2019
Barium Yes Oct 1, 2018
Barium Yes Oct 1, 2018
Barium Yes Jul 1, 2018
Barium Yes Jul 1, 2018
Barium Yes Apr 1, 2018
Barium Yes Apr 1, 2018
Barium Yes Apr 1, 2018
Barium Yes Jan 1, 2018
Barium Yes Jan 1, 2018
Barium Yes Jan 1, 2018
Barium Yes Oct 1, 2017
Barium Yes Oct 1, 2017
Barium Yes Oct 1, 2017
Barium Yes Jul 1, 2017
Barium Yes Jul 1, 2017
Barium Yes Jul 1, 2017
Barium Yes Apr 1, 2017
Barium Yes Apr 1, 2017
Barium Yes Jan 1, 2017
Barium Yes Jan 1, 2017
Barium Yes Oct 1, 2016
Barium Yes Oct 1, 2016
Barium Yes Jul 1, 2016
Barium Yes Jul 1, 2016
Barium Yes Apr 1, 2016
Barium Yes Apr 1, 2016
Barium Yes Jan 1, 2016
Barium Yes Jan 1, 2016
Barium Yes Oct 1, 2015
Barium Yes Oct 1, 2015
Barium Yes Apr 1, 2015
Barium Yes Apr 1, 2015
Barium Yes Jan 1, 2015
Barium Yes Jan 1, 2015
Barium Yes Oct 1, 2014
Barium Yes Oct 1, 2014
Barium Yes Jul 1, 2014
Barium Yes Jul 1, 2014
Barium Yes Jan 1, 2014
Barium Yes Jan 1, 2014
Barium Yes Oct 1, 2013
Barium Yes Oct 1, 2013
Barium Yes Jul 1, 2013
Showing 100 of 135 violations.

Frequently Asked Questions

Is COLUSA CO. WWD #1 - GRIMES water safe to drink?
COLUSA CO. WWD #1 - GRIMES has 135 health-based violations out of 135 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed. The system uses groundwater water as its source.
How many people does COLUSA CO. WWD #1 - GRIMES serve?
COLUSA CO. WWD #1 - GRIMES serves 512 people in Grimes, CA. It is classified as a CWS water system.
What violations does COLUSA CO. WWD #1 - GRIMES have?
COLUSA CO. WWD #1 - GRIMES has 135 total violations on record spanning 2009–2024. 135 are health-based violations involving contaminants exceeding EPA limits.
What contaminants have been found in COLUSA CO. WWD #1 - GRIMES water?
Violations have been recorded for 1 contaminant. The most frequent: Barium.

Nearby Water Systems

CITY OF COLUSA
Colusa · 6,447 served
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CITY OF WILLIAMS
Williams · 5,538 served
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Colusa Southern System
Colusa · 3,474 served
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ARBUCKLE PUBLIC UTILITY DISTRICT
Arbuckle · 2,778 served
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MAXWELL PUBLIC UTILITY DISTRICT
Maxwell · 1,175 served
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COLUSA CO. WWD #2 - PRINCETON
Princeton · 382 served
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COLUSA CO. SERVICE AREA #2-STONYFORD
City Of Colusa · 250 served
Clean
COLUSA CO. SERVICE AREA #1-CENTURY RANCH
City Of Colusa · 246 served
Clean
Colusa Northern System
Colusa · 67 served
Clean
CEDAR CREEK MOBILEHOME PARK
Colusa · 40 served
1 viol.

Explore More

California Water Systems → All States → Contaminants →

About This Data

Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.

Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services

Read our methodology - how this data is sourced, computed, and verified.

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