Is OST SANITATION AND MAINTENANCE Water Safe to Drink in 2026?
South Dakota · PWSID SD4690476 · Ground water
Population served
88
Cities served
CALICO
State / jurisdiction
South Dakota (SD)
PWSID
SD4690476
C
TAP WATER GRADE
Concerning
Model score 59/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
3 violation record(s) in the latest EPA SDWA quarterly snapshot
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CONTAMINANTS — EPA UCMR5 MONITORING
No UCMR5 PFAS detects on file for this PWS in our bundled national dataset — the system may be smaller than UCMR5 thresholds, had non-detects, or results are not yet linked to this ID. Your retailer Annual Water Quality Report lists other regulated contaminants (chlorine, DBPs, nitrates, etc.).
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 3 violation-related records with this system in the same reporting quarter as the utility snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.
Based on OST SANITATION AND MAINTENANCE's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
TOP PICKS FOR OST SANITATION AND MAINTENANCE
⚠ EPA violations / contaminants in monitoring data
WHY THIS FOR OST SANITATION AND MAINTENANCE · Chosen for OST SANITATION AND MAINTENANCE because EPA’s SDWA snapshot shows active violation records. RO addresses a wide range of regulated contaminants, not just chlorine taste.
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