Romeoville, IL Water Quality
What's in Romeoville's water?
Romeoville has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 50,458, over 16,743 connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, Romeoville ranks 1,071th by violation burden (92th percentile) - 56 violations total, 17 health-based.
Against the IL average
IL's 572 covered systems average 5.1 health-based violations each; Romeoville carries 17, more than typical for the state. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
Romeoville's most recent violation on record is dated 2014-01-01, with the most recent health-based one dated 2005-01-10. Last reported to EPA: 05/27/2026.
The concern categories on record
Romeoville'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)
- Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U
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 Romeoville's record does not cover
Everything on this page is Romeoville'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 56 logged violations can see. The guide to what this data misses covers that gap.