Is LONE ROCK SCHOOL DISTRICT NO 13 Water Safe to Drink in 2026?
Montana · PWSID MT0001085 · Ground water
Population served
280
Cities served
STEVENSVILLE
State / jurisdiction
Montana (MT)
PWSID
MT0001085
F
TAP WATER GRADE
High risk
Model score 30/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
143 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 143 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 LONE ROCK SCHOOL DISTRICT NO 13's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
TOP PICKS FOR LONE ROCK SCHOOL DISTRICT NO 13
⚠ EPA violations / contaminants in monitoring data
WHY THIS FOR LONE ROCK SCHOOL DISTRICT NO 13 · Chosen for LONE ROCK SCHOOL DISTRICT NO 13 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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