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Community Water System · PWS OK1010806

Anadarko Public Works Authority

Anadarko, Oklahoma 73005 - drinking water served from surface water sources to 6,804 people, tracked in EPA SDWIS and UCMR5.

6,804
People served
426
EPA violations
323
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 426 drinking-water violations at Anadarko Public Works Authority, 76% of them health-based - above the Oklahoma per-system average.

426
Total EPA violations on record
76%
Health-based (MCL / treatment failure)
6,804
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Anadarko Public Works Authority

Anadarko Public Works Authority is a local-owned community water system that delivers drinking water to 6,804 residents in Anadarko, Oklahoma (Caddo County) through 2,679 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 426 total violations for this system , of which 323 (76%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 94 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is TTHM, recorded in 158 violations (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Oklahoma, EPA tracks 1,262 public water systems serving 3,699,452 people, with 336,706 cumulative violations and 113,804 health-based violations on record. About 98% of systems in the state carry at least one violation, and state-wide the average per system is 266.8 violations. Statewide, 101 of 166 UCMR5-tested systems have reported PFAS detections (60.8%).

Anadarko Public Works Authority's 426 violations sit above the Oklahoma average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
6,804
Total Violations
426
Health-Based Violations
323
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
2,679
County
Caddo
School/Daycare
No
MCL Violations
179
Monitoring Violations
94
Treatment Tech Violations
144

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 158 2025
Interim Enhanced Surface Water Treatment Rule TT 87 2023
Surface Water Treatment Rule TT 37 2023
Coliform (TCR) MCL 21 2015
CARBON, TOTAL TT 20 2022
Revised Total Coliform Rule MON 12 2024
Chlorine MR 12 2024
Interim Enhanced Surface Water Treatment Rule MR 8 2020
CARBON, TOTAL MR 8 2024
TTHM MR 4 2018
Coliform (TCR) MR 4 1997
Total Haloacetic Acids (HAA5) MR 4 2018
Surface Water Treatment Rule MR 2 1999
o-Dichlorobenzene MR 2 2001
p-Dichlorobenzene MR 2 2001
1,1-Dichloroethylene MR 2 2001
trans-1,2-Dichloroethylene MR 2 2001
1,1,1-Trichloroethane MR 2 2001
Carbon tetrachloride MR 2 2001
Trichloroethylene MR 2 2001
1,1,2-Trichloroethane MR 2 2001
Tetrachloroethylene MR 2 2001
Benzene MR 2 2001
Toluene MR 2 2001
cis-1,2-Dichloroethylene MR 2 2001
DICHLOROMETHANE MR 2 2001
CHLOROBENZENE MR 2 2001
Ethylbenzene MR 2 2001
1,2-Dichloropropane MR 2 2001
Styrene MR 2 2001

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
PFOS 9/10/2024 <4.00 ppt 4.00 ppt Not Detected
11Cl-PF3OUdS 9/10/2024 <5.00 ppt 5.00 ppt Not Detected
PFHxS 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/10/2024 <4.00 ppt 4.00 ppt Not Detected
PFBS 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 9/10/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpS 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/10/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 9/10/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/10/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxA 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
4:2 FTS 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/10/2024 <4.00 ppt 4.00 ppt Not Detected
PFBA 9/10/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 9/10/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/10/2024 <2.00 ppt 2.00 ppt Not Detected
PFUnA 9/10/2024 <2.00 ppt 2.00 ppt Not Detected
PFDoA 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/10/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpA 9/10/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 7/9/2024 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 7/9/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 7/9/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 7/9/2024 <6.00 ppt 6.00 ppt Not Detected
PFTrDA 6/19/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 6/19/2024 <8.00 ppt 8.00 ppt Not Detected
NEtFOSAA 6/19/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 6/19/2024 <6.00 ppt 6.00 ppt Not Detected
PFOS 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFDA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 4/9/2024 <20.00 ppt 20.00 ppt Not Detected
PFEESA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFBA 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 4/9/2024 <2.00 ppt 2.00 ppt Not Detected
PFDoA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Anadarko Public Works Authority.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID OK1010806 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Oklahoma Drinking Water Authority

Oklahoma's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find OK regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 TTHM MCL 158 SDWIS / OK1010806 / 2950
2024 Revised Total Coliform Rule MON 12 SDWIS / OK1010806 / 8000
2024 Chlorine MR 12 SDWIS / OK1010806 / 0999
2024 CARBON, TOTAL MR 8 SDWIS / OK1010806 / 2920
2023 Interim Enhanced Surface Water Treatment Rule TT 87 SDWIS / OK1010806 / 0300
2023 Surface Water Treatment Rule TT 37 SDWIS / OK1010806 / 0200
2022 CARBON, TOTAL TT 20 SDWIS / OK1010806 / 2920
2020 Interim Enhanced Surface Water Treatment Rule MR 8 SDWIS / OK1010806 / 0300
2018 TTHM MR 4 SDWIS / OK1010806 / 2950
2018 Total Haloacetic Acids (HAA5) MR 4 SDWIS / OK1010806 / 2456
2015 Coliform (TCR) MCL 21 SDWIS / OK1010806 / 3100
2001 o-Dichlorobenzene MR 2 SDWIS / OK1010806 / 2968
2001 p-Dichlorobenzene MR 2 SDWIS / OK1010806 / 2969
2001 1,1-Dichloroethylene MR 2 SDWIS / OK1010806 / 2977
2001 trans-1,2-Dichloroethylene MR 2 SDWIS / OK1010806 / 2979

How Anadarko Public Works Authority Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Anadarko Public Works Authority Oklahoma avg Federal benchmark
Total violations 426 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 323 90.2 Indicates a contaminant exceeded a federal MCL
PFAS detection None 60.8% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 6,804 2,931 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 1,262 regulated public water systems in Oklahoma.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Anadarko Public Works Authority water safe to drink? ▼
Anadarko Public Works Authority (PWS ID: OK1010806) has 426 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 6,804 people using Surface Water sources.
How many people does Anadarko Public Works Authority serve? ▼
Anadarko Public Works Authority serves 6,804 people in Anadarko, Oklahoma. It is a Local-owned system using Surface Water water sources with 2,679 service connections.
What type of violations does Anadarko Public Works Authority have? ▼
Anadarko Public Works Authority has 426 total violations: 323 health-based violations (MCL exceedances or treatment failures), 94 monitoring/reporting violations, and 144 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Anadarko Public Works Authority water? ▼
No. Anadarko Public Works Authority was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Anadarko Public Works Authority use? ▼
Anadarko Public Works Authority uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.