Is Oskaloosa, Iowa tap water safe?
3 water systems report serving Oskaloosa. Your water depends on which one serves your address. Check your bill if unsure.
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Oskaloosa Municipal Water Dept
Serves 12,808 people · Surface water · 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).
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Mahaska Rural Water System, Inc.
Serves 11,325 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 (2023).
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Oak Creek MHP
Serves 165 people · Surface water · Full report →
No health-based violations in the last 5 years; No UCMR 5 PFAS results on file.