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PUBLIC WATER SYSTEM REPORT
Is DUNCAN RANCH COLONY Water Safe to Drink in 2026?
Montana · PWSID MT0000418 · Ground water
Population served
96
Cities served
HARLOWTON
State / jurisdiction
Montana (MT)
PWSID
MT0000418
B-
TAP WATER GRADE
Fair
Model score 70/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
252 violation record(s) in the latest EPA SDWA 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 DUNCAN RANCH COLONY has not yet been published on WaterCheckup.
Are you the water operator for DUNCAN RANCH COLONY? 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 DUNCAN RANCH COLONYdirectly 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 252 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.
WHY THIS FOR DUNCAN RANCH COLONY · Chosen for DUNCAN RANCH COLONY 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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