What's in THORNTON CITY OF's water?

THORNTON CITY OF's only violations on record are reporting or monitoring lapses, not a contaminant or treatment-technique failure EPA classifies as health-based. Population served: 226,465, over 42,530 connections.

THORNTON CITY OF's record against the rest of the country

Out of 12,903 systems in this dataset, THORNTON CITY OF ranks 10,372th by violation burden (20th percentile) - 11 violations total, 0 health-baseds.

How THORNTON CITY OF compares within CO

THORNTON CITY OF's 0 health-based violations sit within the CO average of 3.0, across 230 systems statewide. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

The last violation EPA has on record for THORNTON CITY OF is from 2023-01-11. Last reported to EPA: 06/17/2026.

What this data is and is not

Everything on this page is THORNTON 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 11 logged violations can see. The guide to what this data misses covers that gap.