Is SIOUX I RURAL WATER SYSTEM (SIOUX) Water Safe to Drink in 2026?
South Dakota · PWSID SD4600436 · Ground water
Population served
1,125
Cities served
—
State / jurisdiction
South Dakota (SD)
PWSID
SD4600436
D
TAP WATER GRADE
Poor
Model score 45/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
10 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 10 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 SIOUX I RURAL WATER SYSTEM (SIOUX)'s monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
TOP PICKS FOR SIOUX I RURAL WATER SYSTEM (SIOUX)
⚠ EPA violations / contaminants in monitoring data
WHY THIS FOR SIOUX I RURAL WATER SYSTEM (SIOUX) · Chosen for SIOUX I RURAL WATER SYSTEM (SIOUX) because the latest federal SDWA snapshot lists substantial violation activity. Certified reverse osmosis provides the broadest residential barrier for households that want margin beyond legal compliance.
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