MARYSVILLE CITY PWS: EPA violation history, explained
MARYSVILLE CITY PWS has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 25,571 people get their water from it, across 11,520 connections.
Ranked against every other system in this dataset
MARYSVILLE CITY PWS has 31 violations on record in total, 16 of thems health-based - ranking it 1,150th of 12,903 systems by violation count, the 91th percentile nationally.
How MARYSVILLE CITY PWS compares within OH
MARYSVILLE CITY PWS's 16 health-based violations sit above the OH average of 5.5, across 394 systems statewide. The clean-record guide covers what a comparison like this can hide.
Most recent violation on record
The last violation EPA has on record for MARYSVILLE CITY PWS is from 2025-02-07 (health-based: 2011-01-01). Last reported to EPA: 05/15/2026.
What kind of problem, specifically
MARYSVILLE CITY PWS'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
- Synthetic organic chemicals / pesticides / VOCs - flagged from: CARBON, TOTAL
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 MARYSVILLE CITY PWS's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 16 health-based violations on file for MARYSVILLE CITY PWS - 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.