Is Hosmer, South Dakota tap water safe?
2 water systems report serving Hosmer. Your water depends on which one serves your address. Check your bill if unsure.
B
Hosmer
Serves 170 people · Surface water · Full report →
1 health-based violation in the last 5 years; 2 monitoring/reporting violations; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2023).
B
Boulder Colony
Serves 26 people · Groundwater · Full report →
1 health-based violation in the last 5 years; 1 not yet resolved; No UCMR 5 PFAS results on file; Lead 90th percentile below the action level (2025).