Marseilles, IL Water Quality
Is Marseilles's water safe to drink?
Marseilles has at least one health-based violation EPA's own compliance-tracking system still lists as unaddressed - the required fix has not been reported complete. Population served: 5,061, over 2,209 connections.
Ranked against every other system in this dataset
Marseilles has 27 violations on record in total, 18 of them health-based - ranking it 1,026th of 12,903 systems by violation count, the 92th percentile nationally.
How Marseilles compares within IL
Among the 572 IL systems in this dataset, the average is 5.1 health-based violations - Marseilles's 18 is above that. 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 Marseilles is from 2026-10-08 (health-based: 2025-05-10). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
Marseilles'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:
- Lead & copper - flagged from: Lead and Copper Rule Revisions
- Radionuclides - flagged from: Combined Radium (-226 and -228)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
This is what Marseilles 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 27 logged violations can see. The guide to what this data misses covers that gap.