Is DUNCAN PUBLIC UTILITIES AUTHORITY's water safe to drink?
DUNCAN PUBLIC UTILITIES AUTHORITY had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 23,000 people get their water from it, across 10,938 connections.
DUNCAN PUBLIC UTILITIES AUTHORITY's record against the rest of the country
DUNCAN PUBLIC UTILITIES AUTHORITY has 168 violations on record in total, 150 of thems health-based - ranking it 29th of 12,903 systems by violation count, the 100th percentile nationally.
How DUNCAN PUBLIC UTILITIES AUTHORITY compares within OK
Among the 240 OK systems in this dataset, the average is 39.5 health-based violations - DUNCAN PUBLIC UTILITIES AUTHORITY's 150 is above that. 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 DUNCAN PUBLIC UTILITIES AUTHORITY is from 2025-01-12 (health-based: 2024-01-10). Last reported to EPA: 05/13/2026.
What kind of problem, specifically
DUNCAN PUBLIC UTILITIES AUTHORITY'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
- 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
DUNCAN PUBLIC UTILITIES AUTHORITY'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 - 150 health-based violations on file for DUNCAN PUBLIC UTILITIES AUTHORITY - 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.