What's in CITY OF DONNA's water?
CITY OF DONNA has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 18,720, over 6,240 connections.
How this compares nationally
Out of 12,903 systems in this dataset, CITY OF DONNA ranks 3,110th by violation burden (76th percentile) - 19 violations total, 6 health-baseds.
How CITY OF DONNA compares within TX
TX's 1,633 covered systems average 6.7 health-based violations each; CITY OF DONNA carries 6, not more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for CITY OF DONNA is from 2025-02-07 (health-based: 2014-01-10). Last reported to EPA: 06/26/2026.
What kind of problem, specifically
CITY OF DONNA'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); Interim Enhanced Surface Water Treatment Rule; Surface Water Treatment 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
CITY OF DONNA's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. This record - 6 health-based violations on file for CITY OF DONNA - 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.