DUNCAN PUBLIC UTILITIES AUTHORITY
PWSID: OK1010809 · Duncan, OK · Serves 23,000 people
According to EPA Safe Drinking Water Information System (SDWIS), DUNCAN PUBLIC UTILITIES AUTHORITY (PWSID OK1010809) in Duncan, OK is listed as a CWS water system covering about 23,000 people. The same extract lists 64 health-based violation records spanning 1986-2024. Those 64 health-based rows for DUNCAN PUBLIC UTILITIES AUTHORITY cover contaminants such as TTHM, CARBON, TOTAL, Total Haloacetic Acids (HAA5); they remain historical EPA registry entries, not a current compliance or drinkability score.
DUNCAN PUBLIC UTILITIES AUTHORITY has 64 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 6 distinct EPA contaminant codes appear in this system's record, including TTHM, CARBON, TOTAL, Total Haloacetic Acids (HAA5). Recorded violations span 1986–2024. Day-to-day primacy enforcement for this system runs through the Oklahoma drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Oklahoma state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- OK1010809
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Duncan, OK
- Population Served
- 23,000
- Health Violations
- Yes (64)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| TTHM | 39 | 39 |
| CARBON, TOTAL | 14 | 14 |
| Total Haloacetic Acids (HAA5) | 6 | 6 |
| Coliform (TCR) | 2 | 2 |
| Coliform (Pre-TCR) | 2 | 2 |
| Interim Enhanced Surface Water Treatment Rule | 1 | 1 |
Violation History (64)
| Contaminant | Health | Date |
|---|---|---|
| CARBON, TOTAL | Yes | Oct 1, 2024 |
| CARBON, TOTAL | Yes | Oct 1, 2024 |
| CARBON, TOTAL | Yes | Oct 1, 2024 |
| CARBON, TOTAL | Yes | Jul 1, 2024 |
| CARBON, TOTAL | Yes | Jul 1, 2024 |
| CARBON, TOTAL | Yes | Jul 1, 2024 |
| CARBON, TOTAL | Yes | Apr 1, 2024 |
| CARBON, TOTAL | Yes | Apr 1, 2024 |
| CARBON, TOTAL | Yes | Apr 1, 2024 |
| CARBON, TOTAL | Yes | Jan 1, 2024 |
| CARBON, TOTAL | Yes | Jan 1, 2024 |
| CARBON, TOTAL | Yes | Jan 1, 2024 |
| CARBON, TOTAL | Yes | Jan 1, 2024 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Jan 1, 2023 |
| TTHM | Yes | Apr 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| TTHM | Yes | Jan 1, 2020 |
| CARBON, TOTAL | Yes | Jan 1, 2020 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Oct 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Jul 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Apr 1, 2019 |
| TTHM | Yes | Jan 1, 2019 |
| TTHM | Yes | Jan 1, 2019 |
| TTHM | Yes | Jan 1, 2019 |
| TTHM | Yes | Jan 1, 2019 |
| TTHM | Yes | Oct 1, 2018 |
| TTHM | Yes | Jul 1, 2018 |
| TTHM | Yes | Apr 1, 2018 |
| TTHM | Yes | Jan 1, 2018 |
| TTHM | Yes | Oct 1, 2017 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2017 |
| TTHM | Yes | Jul 1, 2017 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2017 |
| TTHM | Yes | Jan 1, 2017 |
| Interim Enhanced Surface Water Treatment Rule | Yes | Dec 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Oct 1, 2016 |
| TTHM | Yes | Oct 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Jul 1, 2016 |
| TTHM | Yes | Jul 1, 2016 |
| TTHM | Yes | Apr 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Apr 1, 2016 |
| TTHM | Yes | Jan 1, 2016 |
| Total Haloacetic Acids (HAA5) | Yes | Jan 1, 2016 |
| TTHM | Yes | Jan 1, 2015 |
| TTHM | Yes | Oct 1, 2014 |
| TTHM | Yes | Jul 1, 2014 |
| TTHM | Yes | Oct 1, 2013 |
| Coliform (TCR) | Yes | Sep 1, 1994 |
| Coliform (TCR) | Yes | Apr 1, 1991 |
| Coliform (Pre-TCR) | Yes | May 1, 1987 |
| Coliform (Pre-TCR) | Yes | Nov 1, 1986 |
Frequently Asked Questions
What does EPA SDWIS list for DUNCAN PUBLIC UTILITIES AUTHORITY?
How many people does DUNCAN PUBLIC UTILITIES AUTHORITY serve?
What violations does DUNCAN PUBLIC UTILITIES AUTHORITY have?
What contaminants have been found in DUNCAN PUBLIC UTILITIES AUTHORITY water?
Compare beyond Oklahoma
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest DUNCAN PUBLIC UTILITIES AUTHORITY on cumulative violation count (64) and EPA-reported population served (23,000). Violation-count peers include KINGMAN WATER WORKS, REGINA MDWCA, CITY OF GRANITE SHOALS. Population peers include YORKVILLE, GREAT LAKES NAVAL TRAINING STATION, SANDWICH WATER DISTRICT.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Explore More
About This Data
DUNCAN PUBLIC UTILITIES AUTHORITY (OK1010809) is drawn from EPA SDWIS. Health-based rows in this extract are MCL and Treatment Technique records spanning 1986-2024 covering TTHM, CARBON, TOTAL, Total Haloacetic Acids (HAA5). Historical registry entries, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.