What's in LOUISVILLE CITY OF's water?
LOUISVILLE CITY OF has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 20,975, over 7,368 connections.
Ranked against every other system in this dataset
LOUISVILLE CITY OF has 42 violations on record in total, 2 of thems health-based - ranking it 5,965th of 12,903 systems by violation count, the 54th percentile nationally.
How LOUISVILLE CITY OF compares within CO
LOUISVILLE CITY OF's 2 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 LOUISVILLE CITY OF is from 2025-05-10 (health-based: 2021-01-12). Last reported to EPA: 06/17/2026.
What kind of problem, specifically
LOUISVILLE 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: 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
This is what LOUISVILLE CITY OF 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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 42 logged violations can see. The guide to what this data misses covers that gap.