Is HANFORD, CITY OF's water safe to drink?
HANFORD, CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 62,127 people through 19,077 service connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, HANFORD, CITY OF ranks 58th by violation burden (100th percentile) - 116 violations total, 113 health-baseds.
How HANFORD, CITY OF compares within CA
CA's 803 covered systems average 5.8 health-based violations each; HANFORD, CITY OF carries 113, more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for HANFORD, CITY OF is from 2023-01-10 (health-based: 2021-01-04). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
HANFORD, CITY OF'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:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
- Other regulated metals - flagged from: Arsenic
- Disinfection byproducts - flagged from: TTHM
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
Everything on this page is HANFORD, CITY OF's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Between the utility's meter and HANFORD, CITY OF's customers' taps is household plumbing, invisible to a system-level record ranked 58th of 12,903 by violation count. The guide to what this data misses covers that gap.