PlainEnviro

COLUSA CO. WWD #1 - GRIMES

PWSID: CA0600008 · Grimes, CA · Serves 512 people

According to EPA Safe Drinking Water Information System (SDWIS), COLUSA CO. WWD #1 - GRIMES (PWSID CA0600008) in Grimes, CA is listed as a CWS water system covering about 512 people. The same extract lists 136 health-based violation records spanning 2009-2024. Those 136 health-based rows for COLUSA CO. WWD #1 - GRIMES cover contaminants such as Arsenic; they remain historical EPA registry entries, not a current compliance or drinkability score.

View saved records
Health-Based Records

COLUSA CO. WWD #1 - GRIMES has 136 health-based violation records in this historical extract. Monitoring and reporting records are not included.

Population Served
512
Health-Based Violation Records
136
Distinct Contaminant Codes
1
Source Type
Groundwater

PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including Arsenic. Recorded violations span 2009–2024. Day-to-day primacy enforcement for this system runs through the California drinking-water program, not EPA directly.

A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current 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 (136)

What contaminants are in this water system?

Contaminant Violations Health-Based
Arsenic 136 136

Violation History (136)

Contaminant Health Date
Arsenic Yes Oct 1, 2024
Arsenic Yes Oct 1, 2024
Arsenic Yes Oct 1, 2024
Arsenic Yes Jul 1, 2024
Arsenic Yes Jul 1, 2024
Arsenic Yes Jul 1, 2024
Arsenic Yes Apr 1, 2024
Arsenic Yes Apr 1, 2024
Arsenic Yes Apr 1, 2024
Arsenic Yes Jan 1, 2024
Arsenic Yes Jan 1, 2024
Arsenic Yes Oct 1, 2023
Arsenic Yes Oct 1, 2023
Arsenic Yes Oct 1, 2023
Arsenic Yes Jul 1, 2023
Arsenic Yes Jul 1, 2023
Arsenic Yes Jul 1, 2023
Arsenic Yes Apr 1, 2023
Arsenic Yes Apr 1, 2023
Arsenic Yes Apr 1, 2023
Arsenic Yes Jan 1, 2023
Arsenic Yes Jan 1, 2023
Arsenic Yes Jan 1, 2023
Arsenic Yes Oct 1, 2022
Arsenic Yes Oct 1, 2022
Arsenic Yes Oct 1, 2022
Arsenic Yes Jul 1, 2022
Arsenic Yes Jul 1, 2022
Arsenic Yes Jul 1, 2022
Arsenic Yes Apr 1, 2022
Arsenic Yes Apr 1, 2022
Arsenic Yes Apr 1, 2022
Arsenic Yes Jan 1, 2022
Arsenic Yes Jan 1, 2022
Arsenic Yes Oct 1, 2021
Arsenic Yes Oct 1, 2021
Arsenic Yes Jul 1, 2021
Arsenic Yes Jul 1, 2021
Arsenic Yes Apr 1, 2021
Arsenic Yes Apr 1, 2021
Arsenic Yes Jan 1, 2021
Arsenic Yes Jan 1, 2021
Arsenic Yes Oct 1, 2020
Arsenic Yes Oct 1, 2020
Arsenic Yes Jul 1, 2020
Arsenic Yes Jul 1, 2020
Arsenic Yes Apr 1, 2020
Arsenic Yes Apr 1, 2020
Arsenic Yes Jan 1, 2020
Arsenic Yes Jan 1, 2020
Arsenic Yes Oct 1, 2019
Arsenic Yes Oct 1, 2019
Arsenic Yes Jul 1, 2019
Arsenic Yes Jul 1, 2019
Arsenic Yes Apr 1, 2019
Arsenic Yes Apr 1, 2019
Arsenic Yes Jan 1, 2019
Arsenic Yes Jan 1, 2019
Arsenic Yes Oct 1, 2018
Arsenic Yes Oct 1, 2018
Arsenic Yes Jul 1, 2018
Arsenic Yes Jul 1, 2018
Arsenic Yes Apr 1, 2018
Arsenic Yes Apr 1, 2018
Arsenic Yes Apr 1, 2018
Arsenic Yes Jan 1, 2018
Arsenic Yes Jan 1, 2018
Arsenic Yes Jan 1, 2018
Arsenic Yes Oct 1, 2017
Arsenic Yes Oct 1, 2017
Arsenic Yes Oct 1, 2017
Arsenic Yes Jul 1, 2017
Arsenic Yes Jul 1, 2017
Arsenic Yes Jul 1, 2017
Arsenic Yes Apr 1, 2017
Arsenic Yes Apr 1, 2017
Arsenic Yes Jan 1, 2017
Arsenic Yes Jan 1, 2017
Arsenic Yes Oct 1, 2016
Arsenic Yes Oct 1, 2016
Arsenic Yes Jul 1, 2016
Arsenic Yes Jul 1, 2016
Arsenic Yes Apr 1, 2016
Arsenic Yes Apr 1, 2016
Arsenic Yes Jan 1, 2016
Arsenic Yes Jan 1, 2016
Arsenic Yes Oct 1, 2015
Arsenic Yes Oct 1, 2015
Arsenic Yes Apr 1, 2015
Arsenic Yes Apr 1, 2015
Arsenic Yes Jan 1, 2015
Arsenic Yes Jan 1, 2015
Arsenic Yes Oct 1, 2014
Arsenic Yes Oct 1, 2014
Arsenic Yes Jul 1, 2014
Arsenic Yes Jul 1, 2014
Arsenic Yes Jan 1, 2014
Arsenic Yes Jan 1, 2014
Arsenic Yes Oct 1, 2013
Arsenic Yes Oct 1, 2013
Showing 100 of 136 violations.

Frequently Asked Questions

What does EPA SDWIS list for COLUSA CO. WWD #1 - GRIMES?
COLUSA CO. WWD #1 - GRIMES has 136 health-based violation records in this historical extract. Monitoring and reporting records are not included. 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 136 health-based violation records in PlainEnviro's extract spanning 2009–2024. Monitoring and reporting records are not included.
What contaminants have been found in COLUSA CO. WWD #1 - GRIMES water?
Violations have been recorded for 1 contaminant. The most frequent: Arsenic.

Compare beyond California

Nationwide peers by violations & population served

Cross-state SDWIS systems nearest COLUSA CO. WWD #1 - GRIMES on cumulative violation count (136) and EPA-reported population served (512). Violation-count peers include WELEETKA PUBLIC WORKS AUTHORITY, KOTZEBUE MUN. WATER SYSTEM, UNION SPRINGS WATER SYSTEM. Population peers include Yerington (Campbell Ranch), CS TONTO VILLAGE WATER COMPANY, TOVEY.

Similar violation count

Nearest cross-state community systems (500+ served) by SDWIS violations on record.

Similar population served

Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).

Nearby Water Systems

CITY OF COLUSA
Colusa · 6,447 served
Clean
CITY OF WILLIAMS
Williams · 5,538 served
Clean
Colusa Southern System
Colusa · 3,474 served
Clean
ARBUCKLE PUBLIC UTILITY DISTRICT
Arbuckle · 2,778 served
Clean
MAXWELL PUBLIC UTILITY DISTRICT
Maxwell · 1,175 served
Clean
COLUSA CO. WWD #2 - PRINCETON
Princeton · 382 served
Clean
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

Explore More

California Water Systems → All States → Contaminants →

About This Data

COLUSA CO. WWD #1 - GRIMES (CA0600008) is drawn from EPA SDWIS. Nearby county systems in this extract include CITY OF COLUSA; CITY OF WILLIAMS; Colusa Southern System; ARBUCKLE PUBLIC UTILITY DISTRICT. Health-based rows (136 MCL/TT) are historical registry state, not a current drinkability score.

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

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

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