COLUMBUS WATER SYSTEM: EPA violation history, explained
COLUMBUS WATER SYSTEM had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 2,230 people get their water from it, across 820 connections.
Ranked against every other system in this dataset
COLUMBUS WATER SYSTEM has 82 violations on record in total, 48 of thems health-based - ranking it 294th of 12,903 systems by violation count, the 98th percentile nationally.
Against the NM average
Among the 102 NM systems in this dataset, the average is 13.9 health-based violations - COLUMBUS WATER SYSTEM's 48 is above that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
COLUMBUS WATER SYSTEM's most recent violation on record is dated 2026-11-07, with the most recent health-based one dated 2023-03-06. Last reported to EPA: 06/16/2026.
The concern categories on record
COLUMBUS WATER SYSTEM'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); Groundwater Rule
- Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U
- Other regulated metals - flagged from: Arsenic; Fluoride
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 COLUMBUS WATER SYSTEM's record does not cover
This is what COLUMBUS WATER SYSTEM 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 COLUMBUS WATER SYSTEM's customers' taps is household plumbing, invisible to a system-level record ranked 294th of 12,903 by violation count. The guide to what this data misses covers that gap.