What's in ISLAND LAKE's water?
ISLAND LAKE has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. It serves 8,066 people through 3,103 service connections.
How this compares nationally
Out of 12,903 systems in this dataset, ISLAND LAKE ranks 8,854th by violation burden (31th percentile) - 4 violations total, 1 health-based.
How ISLAND LAKE compares within IL
Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - ISLAND LAKE's 1 is at or below that. 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 ISLAND LAKE is from 2023-01-01 (health-based: 1997-01-09). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
ISLAND LAKE'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)
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
ISLAND LAKE'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. This record - 1 health-based violation on file for ISLAND LAKE - 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.