SENECA: EPA violation history, explained
SENECA has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 2,353 people through 896 service connections.
Ranked against every other system in this dataset
Out of 12,903 systems in this dataset, SENECA ranks 1,979th by violation burden (85th percentile) - 19 violations total, 10 health-baseds.
How SENECA compares within IL
SENECA's 10 health-based violations sit above the IL average of 5.0, across 560 systems statewide. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
The last violation EPA has on record for SENECA is from 2015-01-09 (health-based: 2005-01-10). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
SENECA'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)
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
SENECA'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. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 19 logged violations can see. The guide to what this data misses covers that gap.