Is DUNCAN PUBLIC UTILITIES AUTHORITY Water Safe to Drink in 2026?
Oklahoma · PWSID OK1010809 · Surface water
Population served
23,000
Cities served
—
State / jurisdiction
Oklahoma (OK)
PWSID
OK1010809
F
TAP WATER GRADE
High risk
Model score 18/88 from violations, PFAS profile, and monitoring signals — not a laboratory test of your faucet.
845 violation record(s) in the latest EPA SDWA quarterly snapshotPFAS compounds detected in UCMR5 monitoring
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CONTAMINANTS — EPA UCMR5 MONITORING
Compound
Level (ppt)
EPA limit
Health guideline
Status
PFBA
7.5
—
Within / n/a
Unregulated (monitored)
PFPeA
3.8
—
Within / n/a
Unregulated (monitored)
PFHpA
3.4
—
Within / n/a
Unregulated (monitored)
PFHxA
3.3
—
Within / n/a
Unregulated (monitored)
Source: EPA UCMR5 · ppt = parts per trillion · MCL = enforceable limit for regulated PFAS
VIOLATIONS HISTORY (FEDERAL SNAPSHOT)
EPA’s national SDWA quarterly files associate 845 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 DUNCAN PUBLIC UTILITIES AUTHORITY's monitoring and violation profile, here are vetted filtration options — same picks framework as our city reports.
TOP PICKS FOR DUNCAN PUBLIC UTILITIES AUTHORITY
⚠ EPA violations / contaminants in monitoring data
WHY THIS FOR DUNCAN PUBLIC UTILITIES AUTHORITY · Chosen for DUNCAN PUBLIC UTILITIES AUTHORITY 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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