CITY OF DOS PALOS: EPA violation history, explained
CITY OF DOS PALOS had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 7,452 people get their water from it, across 2,525 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, CITY OF DOS PALOS ranks 345th by violation burden (97th percentile) - 47 violations total, 43 health-baseds.
How CITY OF DOS PALOS compares within CA
CITY OF DOS PALOS's 43 health-based violations sit above the CA average of 5.8, across 803 systems statewide. 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 CITY OF DOS PALOS is from 2025-01-07 (health-based: 2025-01-07). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
CITY OF DOS PALOS'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: Surface Water Treatment Rule
- Synthetic organic chemicals / pesticides / VOCs - flagged from: CARBON, TOTAL
- Disinfection byproducts - flagged from: TTHM; 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 this data is and is not
Everything on this page is CITY OF DOS PALOS'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 CITY OF DOS PALOS's customers' taps is household plumbing, invisible to a system-level record ranked 345th of 12,903 by violation count. The guide to what this data misses covers that gap.