Is ST. HELENA, CITY OF's water safe to drink?
ST. HELENA, CITY OF had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. Population served: 5,386, over 2,551 connections.
ST. HELENA, CITY OF's record against the rest of the country
15 total violations and 13 health-based ones put ST. HELENA, CITY OF at the 88th percentile nationally for violation burden, rank 1,520 of 12,903.
Against the CA average
Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - ST. HELENA, CITY OF's 13 is above that. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
ST. HELENA, CITY OF's most recent violation on record is dated 2023-01-07, with the most recent health-based one dated 2023-01-07. Last reported to EPA: 06/22/2026.
The concern categories on record
ST. HELENA, 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); Surface Water Treatment Rule
- Disinfection byproducts - flagged from: Total Haloacetic Acids (HAA5)
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 ST. HELENA, CITY OF's record does not cover
ST. HELENA, CITY OF's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and ST. HELENA, CITY OF's customers' taps is household plumbing, invisible to a system-level record ranked 1,520th of 12,903 by violation count. The guide to what this data misses covers that gap.