Is HILMAR COUNTY WATER DISTRICT's water safe to drink?
HILMAR COUNTY WATER DISTRICT had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. It serves 5,504 people through 1,684 service connections.
How this compares nationally
Out of 12,903 systems in this dataset, HILMAR COUNTY WATER DISTRICT ranks 1,112th by violation burden (91th percentile) - 19 violations total, 17 health-baseds.
Against the CA average
HILMAR COUNTY WATER DISTRICT's 17 health-based violations sit above the CA average of 5.8, across 803 systems statewide. See the lead and copper guide for why lead counts differently.
Most recent violation on record
HILMAR COUNTY WATER DISTRICT's most recent violation on record is dated 2025-01-11, with the most recent health-based one dated 2025-01-11. Last reported to EPA: 06/22/2026.
The concern categories on record
HILMAR COUNTY WATER DISTRICT's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Nitrate / nitrite - flagged from: Nitrate
The most severe category on record is nitrate / nitrite, which points toward a reverse osmosis-class filter if you want to address it directly.
What HILMAR COUNTY WATER DISTRICT's record does not cover
Everything on this page is HILMAR COUNTY WATER DISTRICT's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 17 health-based violations on file for HILMAR COUNTY WATER DISTRICT - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.