What's in VERNON HILLS - LAKE CO PW's water?
VERNON HILLS - LAKE CO PW has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 33,207, over 11,069 connections.
VERNON HILLS - LAKE CO PW's record against the rest of the country
VERNON HILLS - LAKE CO PW has 9 violations on record in total, 3 of thems health-based - ranking it 5,308th of 12,903 systems by violation count, the 59th percentile nationally.
How VERNON HILLS - LAKE CO PW compares within
Among the 244 systems in this dataset, the average is 11.2 health-based violations - VERNON HILLS - LAKE CO PW's 3 is at or below 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 VERNON HILLS - LAKE CO PW is from 2024-01-07 (health-based: 1994-01-08). Last reported to EPA: 05/27/2026.
What kind of problem, specifically
VERNON HILLS - LAKE CO PW'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
VERNON HILLS - LAKE CO PW'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 9 logged violations can see. The guide to what this data misses covers that gap.