What's in ST JOHN WATER DISTRICT 3's water?
ST JOHN WATER DISTRICT 3 has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 31,965, over 10,655 connections.
Ranked against every other system in this dataset
ST JOHN WATER DISTRICT 3 has 3 violations on record in total, 1 of them health-based - ranking it 8,956th of 12,903 systems by violation count, the 31th percentile nationally.
Against the LA average
ST JOHN WATER DISTRICT 3's 1 health-based violations sit within the LA average of 12.6, across 347 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
ST JOHN WATER DISTRICT 3's most recent violation on record is dated 2018-12-01, with the most recent health-based one dated 2015-01-08. Last reported to EPA: 06/23/2026.
The concern categories on record
ST JOHN WATER DISTRICT 3'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)
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 JOHN WATER DISTRICT 3's record does not cover
Everything on this page is ST JOHN WATER DISTRICT 3's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 1 health-based violation on file for ST JOHN WATER DISTRICT 3 - 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.