Is Alton, Missouri tap water safe?
2 water systems report serving Alton. Your water depends on which one serves your address. Check your bill if unsure.
A
Alton PWS
Serves 1,000 people · Groundwater · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2024).
A
Oregon County PWSD 1
Serves 900 people · Groundwater · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).