What's in DELTA CITY OF's water?
DELTA CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 8,700 people get their water from it, across 3,600 connections.
How this compares nationally
5 total violations and 1 health-based ones put DELTA CITY OF at the 32th percentile nationally for violation burden, rank 8,716 of 12,903.
How DELTA CITY OF compares within CO
DELTA CITY OF's 1 health-based violations sit within the CO average of 3.0, across 230 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 DELTA CITY OF is from 2025-07-10 (health-based: 1991-01-07). Last reported to EPA: 06/17/2026.
What kind of problem, specifically
DELTA CITY OF'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)
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 DELTA CITY OF's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 5 logged violations can see. The guide to what this data misses covers that gap.