HUGHSON, CA · Stanislaus County

HUGHSON, CITY OF Water System

Current status

1 open health-based violation on record as of July 4, 2026. See the violation history below for contaminant and status details.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.

System facts

System ID (PWSID): CA5010008
System type: Community Water System
Population served: 7,481
Service connections: 2,329
Ownership: local government
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2025 – September 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2025 – June 30, 2025
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2025 – March 31, 2025
Archived
LSL Inventory
Health-based
LEAD AND COPPER RULE REVISIONS
October 17, 2024
Unaddressed
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2024 – December 31, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2024 – September 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2024 – June 30, 2024
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2023 – December 31, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2023 – September 30, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2023 – June 30, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2023 – March 31, 2023
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2022 – September 30, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2022 – June 30, 2022
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2021 – September 30, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2021 – June 30, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2021 – March 31, 2021
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2020 – December 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2020 – September 30, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2020 – June 30, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2020 – March 31, 2020
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2019 – December 31, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2019 – September 30, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2019 – June 30, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2019 – March 31, 2019
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2018 – December 31, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2018 – September 30, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2018 – June 30, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2018 – March 31, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2017 – December 31, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2017 – March 31, 2017
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2016 – June 30, 2016
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2015 – December 31, 2015
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2015 – March 31, 2015
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
October 1, 2014 – December 31, 2014
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2014 – September 30, 2014
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2012 – June 30, 2012
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
July 1, 2011 – September 30, 2011
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
January 1, 2011 – March 31, 2011
Archived
Maximum Contaminant Level Violation, Average
Health-based
Arsenic
April 1, 2009 – June 30, 2009
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
September 1, 2003 – September 16, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
June 1, 2003 – June 30, 2003
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
March 1, 2002 – March 31, 2002
Resolved
Notification, Public
—
No contaminant on record
August 1, 1987 – August 31, 1987
Archived
Notification, Public
—
No contaminant on record
July 1, 1987 – July 31, 1987
Archived

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025 – September 30, 2025	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2025 – June 30, 2025	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2025 – March 31, 2025	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 17, 2024	LSL Inventory	LEAD AND COPPER RULE REVISIONS	Health-based	Unaddressed
October 1, 2024 – December 31, 2024	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2024 – September 30, 2024	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2024 – June 30, 2024	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2023 – December 31, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2023 – June 30, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2023 – March 31, 2023	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2022 – June 30, 2022	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2021 – September 30, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2021 – June 30, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2021 – March 31, 2021	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2020 – December 31, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2020 – September 30, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2020 – June 30, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2020 – March 31, 2020	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2019 – December 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2019 – September 30, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2019 – June 30, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2019 – March 31, 2019	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2018 – December 31, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2018 – September 30, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2018 – June 30, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2018 – March 31, 2018	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2017 – December 31, 2017	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2017 – March 31, 2017	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2016 – June 30, 2016	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2015 – December 31, 2015	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2015 – March 31, 2015	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
October 1, 2014 – December 31, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2014 – September 30, 2014	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
January 1, 2011 – March 31, 2011	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
April 1, 2009 – June 30, 2009	Maximum Contaminant Level Violation, Average	Arsenic	Health-based	Archived
September 1, 2003 – September 16, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 2003 – June 30, 2003	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
March 1, 2002 – March 31, 2002	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 1987 – August 31, 1987	Notification, Public	—	—	Archived
July 1, 1987 – July 31, 1987	Notification, Public	—	—	Archived

Archived closed in EPA's records (typically due to age or a data correction)Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

November 21, 2011State Administrative/Compliance Order without penalty issued1 linked violation
November 21, 2011State Compliance achieved1 linked violation
January 12, 2011State Compliance achieved1 linked violation
July 15, 2009State Compliance achieved4 linked violations
January 5, 2009State Administrative/Compliance Order without penalty issued67 linked violations
September 9, 2003State Compliance achieved2 linked violations
July 10, 2003State Compliance achieved3 linked violations
April 17, 2002State Administrative/Compliance Order without penalty issued5 linked violations

Contact

JAUREGUI, CARLA

209-450-6252

HUGHSON, CA 95326