DUNCAN PUBLIC UTILITIES AUTHORITY
Oklahoma - Community Water System - PWSID: OK1010809
System Information
| PWSID | OK1010809 |
| System Name | DUNCAN PUBLIC UTILITIES AUTHORITY |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 06 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 11, 1980 |
| Last Reported | Feb 18, 2026 |
Location & Contact
| State | Oklahoma |
| City | DUNCAN |
| ZIP Code | 73534 |
| Address | The Honorable Robert Armstrong, Mayor |
| Organization | DUNCAN PUBLIC UTILITIES AUTHORITY |
| Phone | 580-251-7796 |
Population & Service
| Population Served | 23,000 |
| Service Connections | 10,938 |
Drinking Water Violations (845)
This water system has 845 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2025 | Nov 30, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Nov 30, 2025 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | - | - | - | Resolved | Nov 30, 2024 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Nov 30, 2024 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | - | - | - | Resolved | Nov 30, 2024 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Nov 30, 2024 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Nov 30, 2024 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | - | - | - | Resolved | Nov 30, 2024 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Nov 30, 2024 | - | |
| Nov 1, 2024 | Nov 30, 2024 | MON | No | Yes | - | - | - | Resolved | Nov 30, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | TT | Yes | No | .9 RATIO | TT | - | Archived | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | TT | Yes | No | .9 RATIO | TT | - | Archived | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | TT | Yes | No | .9 RATIO | TT | - | Archived | Dec 31, 2024 | - | |
| Oct 1, 2024 | Dec 31, 2024 | TT | Yes | No | .9 RATIO | TT | - | Archived | Dec 31, 2024 | - | |
| Aug 1, 2024 | Aug 31, 2024 | MR | No | Yes | - | TT | - | Resolved | Aug 31, 2024 | - | |
| Aug 1, 2024 | Aug 31, 2024 | MR | No | Yes | - | TT | - | Resolved | Aug 31, 2024 | - | |
| Aug 1, 2024 | Aug 31, 2024 | MR | No | Yes | - | TT | - | Resolved | Aug 31, 2024 | - | |
| Aug 1, 2024 | Aug 31, 2024 | MR | No | Yes | - | TT | - | Resolved | Aug 31, 2024 | - | |
| Aug 1, 2024 | Aug 31, 2024 | MR | No | Yes | - | TT | - | Resolved | Aug 31, 2024 | - | |
| Aug 1, 2024 | Aug 31, 2024 | MR | No | Yes | - | TT | - | Resolved | Aug 31, 2024 | - | |
| Aug 1, 2024 | Aug 31, 2024 | MR | No | Yes | - | TT | - | Resolved | Aug 31, 2024 | - | |
| Aug 1, 2024 | Aug 31, 2024 | MR | No | Yes | - | TT | - | Resolved | Aug 31, 2024 | - | |
| Jul 1, 2024 | Sep 30, 2024 | TT | Yes | No | .88 RATIO | TT | - | Archived | Sep 30, 2024 | - | |
| Jul 1, 2024 | Sep 30, 2024 | TT | Yes | No | .88 RATIO | TT | - | Archived | Sep 30, 2024 | - | |
| Jul 1, 2024 | Sep 30, 2024 | TT | Yes | No | .88 RATIO | TT | - | Archived | Sep 30, 2024 | - | |
| Jul 1, 2024 | Sep 30, 2024 | TT | Yes | No | .88 RATIO | TT | - | Archived | Sep 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | TT | Yes | No | .98 RATIO | TT | - | Archived | Jun 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | TT | Yes | No | .98 RATIO | TT | - | Archived | Jun 30, 2024 | - | |
| Apr 1, 2024 | Jun 30, 2024 | TT | Yes | No | .98 RATIO | TT | - | Archived | Jun 30, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | TT | Yes | No | .99 RATIO | TT | - | Archived | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | TT | Yes | No | .99 RATIO | TT | - | Archived | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | TT | Yes | No | .99 RATIO | TT | - | Archived | Mar 31, 2024 | - | |
| Jan 1, 2024 | Mar 31, 2024 | TT | Yes | No | .99 RATIO | TT | - | Archived | Mar 31, 2024 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | - | |
| Jan 1, 2023 | Mar 31, 2023 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2023 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | - | |
| Apr 1, 2020 | Jun 30, 2020 | MCL | Yes | No | .081 MG/L | 0.080 mg/L | .08 | Archived | Jun 30, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | TT | Yes | No | - | TT | - | Resolved | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | TT | Yes | No | - | TT | - | Resolved | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | TT | Yes | No | - | TT | - | Resolved | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | TT | Yes | No | - | TT | - | Resolved | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .082 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .085 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2020 | - | |
| Jan 1, 2020 | Mar 31, 2020 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | .08 | Archived | Mar 31, 2020 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.