Is LEMONT's water safe to drink?
LEMONT had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. It serves 17,500 people through 6,396 service connections.
LEMONT's record against the rest of the country
38 total violations and 14 health-based ones put LEMONT at the 90th percentile nationally for violation burden, rank 1,346 of 12,903.
How LEMONT compares within IL
LEMONT's 14 health-based violations sit above the IL average of 5.0, across 560 systems statewide. 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 LEMONT is from 2027-07-08 (health-based: 2027-07-08). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
LEMONT'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
- 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 lead & copper, which points toward a lead-class filter if you want to address it directly.
What this data is and is not
Everything on this page is LEMONT's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 14 health-based violations on file for LEMONT - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.