Is Monticello, Iowa tap water safe?
3 water systems report serving Monticello. Your water depends on which one serves your address. Check your bill if unsure.
A
Monticello Water Supply
Serves 4,040 people · Groundwater · Full report →
No health-based violations in the last 5 years; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
A
Bacon Addition
Serves 81 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).
B
Montipark LLC
Serves 60 people · Groundwater · Full report →
No health-based violations in the last 5 years; 146 monitoring/reporting violations; 58 not yet resolved; No UCMR 5 PFAS results on file; Latest lead 90th percentile on file is from 2020 (older than 5 years, not graded).