Hilmar County Water District

ZipCheckup's reading of EPA records for Hilmar County Water District (CA2410012): 14 health-based violations recorded since 2021. Hilmar County Water District's EPA record lists 14 historical violations, and none is listed as open in that record; the utility supplies water to 5,504 residents.

Data: EPA SDWIS

System Overview

Hilmar County Water District (EPA ID: CA2410012) is a community water system in California that serves approximately 5,504 people from groundwater sources.

This system provides water to 3 ZIP codes across 3 communities.

ZIP-Area Home Safety Context: A (100/100)

This is the average Home Safety Score for 1 of 3 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.

Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.

Violation History

Status breakdown for accepted records with record years 2021-2026: 0 resolved, 14 archived, 0 addressed, and 0 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.

Recent Violations

Contaminants Detected

The following contaminants have been flagged in EPA records for this water system:

Health Risk Details

Lead (EPA level: 0.015 mg/L (EPA action level for the 90th percentile of a system's tap samples; not a safe level))

Brain damage in children, kidney & blood pressure in adults At-risk groups: infants, children under 6, pregnant women.

Treatment options (verify a product is certified to reduce this contaminant): reverse osmosis, distillation, carbon block filter certified for lead reduction (NSF/ANSI 53). Find the right filter →

Lead & Copper

EPA Lead and Copper Rule evidence attributed directly to this water system:

No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.

Radon Risk in Service Area

3 of 3 ZIP records with known zones are in EPA Radon Zone 3.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

ZIP Codes Served

Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by CA or modeled from parcel and building-footprint data.

• 95315 - Delhi
• 95324 - Hilmar
• 95380 - Turlock

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Hilmar County Water District (CA2410012) on EPA.gov.

Frequently Asked Questions

Is Hilmar County Water District water safe to drink?

The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Hilmar County Water District; its 14 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.

How many people does Hilmar County Water District serve?

Hilmar County Water District serves approximately 5,504 people across 3 ZIP codes in California.

Where does Hilmar County Water District get its water?

The primary water source is groundwater.

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  author = {{ZipCheckup}},
  title  = {{Hilmar County Water District (CA): 14 Health Violations}},
  year   = {n.d.},
  url    = {https://zipcheckup.com/water-system/ca2410012/}
}