Rincon Northern: EPA violation history, explained
Rincon Northern has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 7,003 people get their water from it, across 183 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, Rincon Northern ranks 3,959th by violation burden (69th percentile) - 89 violations total, 4 health-baseds.
How Rincon Northern compares within CA
CA's 803 covered systems average 5.8 health-based violations each; Rincon Northern carries 4, not more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for Rincon Northern is from 2016-01-11 (health-based: 2005-01-08). Last reported to EPA: 06/30/2026.
What kind of problem, specifically
Rincon Northern'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 this data is and is not
This is what Rincon Northern reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Between the utility's meter and Rincon Northern's customers' taps is household plumbing, invisible to a system-level record ranked 3,959th of 12,903 by violation count. The guide to what this data misses covers that gap.