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PUBLIC WATER SYSTEM REPORT
Is CHEYENNE RIVER WATER AUTHORITY Water Safe to Drink in 2026?
South Dakota · PWSID SD4690447 · Ground water
Population served
75
Cities served
THUNDER BUTTE
State / jurisdiction
South Dakota (SD)
PWSID
SD4690447
A+
TAP WATER GRADE
Excellent
Model score 88/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
No major violations flagged in the latest federal quarterly snapshot
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.).
Official Consumer Confidence Report (CCR)
📋 The official 2026 CCR for CHEYENNE RIVER WATER AUTHORITY has not yet been published on WaterCheckup.
Are you the water operator for CHEYENNE RIVER WATER AUTHORITY? Publish your official CCR here for free — your customers are already finding this page.
Residents: Your public water system is required by EPA to publish an annual CCR by July 1st each year. Contact CHEYENNE RIVER WATER AUTHORITYdirectly to request a copy, or check the EPA's national CCR portal at cfpub.epa.gov/ccr.
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 0 violation-related records with this system in the same reporting quarter as the public water system snapshot used on WaterCheckup. This is not a complete historical docket — see ECHO and SDWIS for full compliance context.
Based on CHEYENNE RIVER WATER AUTHORITY's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
WHY THIS FOR CHEYENNE RIVER WATER AUTHORITY · Chosen for CHEYENNE RIVER WATER AUTHORITY because groundwater supplies can carry nitrates, arsenic, and localized contamination. RO is the strongest barrier for sensitive households.
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