CORTLAND: EPA violation history, explained
CORTLAND has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 4,398, over 1,529 connections.
How this compares nationally
CORTLAND has 35 violations on record in total, 25 of thems health-based - ranking it 712th of 12,903 systems by violation count, the 94th percentile nationally.
How CORTLAND compares within IL
Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - CORTLAND's 25 is above that. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for CORTLAND is from 2023-01-07 (health-based: 2007-01-01). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
CORTLAND'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 this data is and is not
CORTLAND's numbers here come from its own required reporting to EPA under the Safe Drinking Water Act, not from an independent test of your glass of water. Between the utility's meter and CORTLAND's customers' taps is household plumbing, invisible to a system-level record ranked 712th of 12,903 by violation count. The guide to what this data misses covers that gap.