Is Hillsboro, Ohio tap water safe?
3 water systems report serving Hillsboro. Your water depends on which one serves your address. Check your bill if unsure. This list is matched from the ZIP codes in this place, so it may include nearby systems.
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Highland County Water Company, Inc.
Serves 28,421 people · Groundwater · Full report →
No health-based violations in the last 5 years; 1 monitoring/reporting violation; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
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Pike Water, Inc.-Plant PWS
Serves 15,487 people · Groundwater · Full report →
No health-based violations in the last 5 years; 4 monitoring/reporting violations; 3 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).
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Hillsboro City
Serves 6,650 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).