Is Vernon Hills, Illinois tap water safe?
2 water systems report serving Vernon Hills. Your water depends on which one serves your address. Check your bill if unsure.
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Vernon Hills - Lake Co Pw
Serves 33,207 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2023).
A
Ciel Senior Living
Serves 225 people · Surface water · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).