Is Harrisonville, Missouri tap water safe?
3 water systems report serving Harrisonville. Your water depends on which one serves your address. Check your bill if unsure.
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Harrisonville PWS
Serves 10,250 people · Surface water · Full report →
No health-based violations in the last 5 years; 3 monitoring/reporting violations; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
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Cass County PWSD 9
Serves 6,063 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).
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Cass County PWSD 4
Serves 1,840 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).