Is Rock Valley, Iowa tap water safe?
2 water systems report serving Rock Valley. Your water depends on which one serves your address. Check your bill if unsure.
A
Rock Valley Water Supply
Serves 4,059 people · Groundwater · Full report →
No health-based violations in the last 5 years; 2 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A
Rock Valley Rural Water District
Serves 2,250 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 (2025).