ROUND LAKE: EPA violation history, explained

ROUND LAKE has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 18,430 people through 5,014 service connections.

Ranked against every other system in this dataset

ROUND LAKE has 10 violations on record in total, 3 of thems health-based - ranking it 5,272th of 12,903 systems by violation count, the 59th percentile nationally.

Against the IL average

IL's 560 covered systems average 5.0 health-based violations each; ROUND LAKE carries 3, not more than typical for the state. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

ROUND LAKE's most recent violation on record is dated 2026-01-01, with the most recent health-based one dated 1994-03-03. Last reported to EPA: 05/27/2026.

The concern categories on record

ROUND LAKE'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:

• Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U

The most severe category on record is radionuclides, which points toward a reverse osmosis-class filter if you want to address it directly.

What ROUND LAKE's record does not cover

This is what ROUND LAKE 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 10 logged violations can see. The guide to what this data misses covers that gap.