Is LOUISVILLE WATER COMPANY's water safe to drink?
LOUISVILLE WATER COMPANY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 806,997 people get their water from it, across 311,310 connections.
How this compares nationally
82 total violations and 7 health-based ones put LOUISVILLE WATER COMPANY at the 80th percentile nationally for violation burden, rank 2,571 of 12,903.
How LOUISVILLE WATER COMPANY compares within KY
KY's 273 covered systems average 9.4 health-based violations each; LOUISVILLE WATER COMPANY carries 7, not more than typical for the state. 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 LOUISVILLE WATER COMPANY is from 2006-01-10 (health-based: 1999-10-06). Last reported to EPA: 06/18/2026.
What kind of problem, specifically
LOUISVILLE WATER COMPANY'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)
- Other regulated metals - flagged from: Beryllium, Total; Cadmium; Thallium, Total
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 LOUISVILLE WATER COMPANY'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 82 logged violations can see. The guide to what this data misses covers that gap.