WASHINGTON WATER WORKS: EPA violation history, explained
WASHINGTON WATER WORKS had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 13,690 people get their water from it, across 5,476 connections.
How this compares nationally
WASHINGTON WATER WORKS has 11 violations on record in total, 5 of thems health-based - ranking it 3,725th of 12,903 systems by violation count, the 71th percentile nationally.
How WASHINGTON WATER WORKS compares within IN
Among the 283 IN systems in this dataset, the average is 2.9 health-based violations - WASHINGTON WATER WORKS's 5 is above that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for WASHINGTON WATER WORKS is from 2025-05-09 (health-based: 2025-05-09). Last reported to EPA: 06/30/2026.
What kind of problem, specifically
WASHINGTON WATER WORKS'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); Stage 1 Disinfectants and Disinfection Byproducts Rule
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 WASHINGTON WATER WORKS 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. This record - 5 health-based violations on file for WASHINGTON WATER WORKS - 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.