What's in WASCO SD's water?
WASCO SD has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 4,000 people get their water from it, across 1,195 connections.
How this compares nationally
Out of 12,903 systems in this dataset, WASCO SD ranks 1,377th by violation burden (89th percentile) - 23 violations total, 14 health-baseds.
How WASCO SD compares within IL
Among the 560 IL systems in this dataset, the average is 5.0 health-based violations - WASCO SD's 14 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 WASCO SD is from 2022-01-07 (health-based: 2005-01-04). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
WASCO SD'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:
- Radionuclides - flagged from: Combined Radium (-226 and -228); Gross Alpha, Excl. Radon and U
The most severe category on record is radionuclides, which points toward a reverse osmosis-class filter if you want to address it directly.
What this data is and is not
This is what WASCO SD 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 23 logged violations can see. The guide to what this data misses covers that gap.