Is Fort Defiance, Window Rock, St. Michaels, Navajo Nation tap water safe?
1 water system report serving Fort Defiance, Window Rock, St. Michaels. Your water depends on which one serves your address. Check your bill if unsure.
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Fort Defiance-Window Rock-St Michaels NTUA
Serves 12,869 people · Groundwater · Full report →
2 health-based violations in the last 5 years; 2 monitoring/reporting violations; 2 not yet resolved; PFAS tested (UCMR 5), none above federal limits; Lead 90th percentile below the action level (2025).