Is HILMAR COUNTY WATER DISTRICT required to publish a Consumer Confidence Report?

Yes. HILMAR COUNTY WATER DISTRICT is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is HILMAR COUNTY WATER DISTRICT’s next Consumer Confidence Report due?

HILMAR COUNTY WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

HILMAR, CA · Merced County

HILMAR COUNTY WATER DISTRICT Water System

Consumer Confidence Report status

HILMAR COUNTY WATER DISTRICT must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for HILMAR COUNTY WATER DISTRICT.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 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): CA2410012
System type: Community Water System
Population served: 5,504
Service connections: 1,684
Ownership: local government
Water source: groundwater (wells)

HILMAR COUNTY WATER DISTRICT is one of 278 community water systems in California in the 3,301 to 10,000 people size category, serving 5,504 people from groundwater.

As of August 1, 2026, its federal record holds 6 entries between 1982 and 2025, all of which EPA lists as closed.

Of the 6, 1 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals.

Violation history

Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 2025 – July 31, 2025
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 2024 – July 31, 2024
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
January 1, 2024 – January 31, 2024
Archived
Monitoring, Regular
—
Nitrate
January 1, 2019 – March 31, 2019
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
July 1, 1983 – July 31, 1983
Archived
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
August 1, 1982 – September 30, 1982
Archived

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 2025 – July 31, 2025	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
July 1, 2024 – July 31, 2024	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 2024 – January 31, 2024	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
January 1, 2019 – March 31, 2019	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1983 – July 31, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
August 1, 1982 – September 30, 1982	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the state

Enforcement actions

October 2, 2024State Administrative/Compliance Order without penalty issued23 linked violations
January 14, 2009State Violation/Reminder Notice16 linked violations

Common questions

Is HILMAR COUNTY WATER DISTRICT required to publish a Consumer Confidence Report?: Yes. HILMAR COUNTY WATER DISTRICT is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is HILMAR COUNTY WATER DISTRICT’s next Consumer Confidence Report due?: HILMAR COUNTY WATER DISTRICT’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does HILMAR COUNTY WATER DISTRICT have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for HILMAR COUNTY WATER DISTRICT.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

JORRITSMA, CURTIS

209-632-3522

HILMAR, CA 95324