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Community Water System · PWS OK2000812

Hydro PWA

Hydro, Oklahoma 73048 - drinking water served from groundwater sources to 1,060 people, tracked in EPA SDWIS and UCMR5.

1,060
People served
200
EPA violations
34
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 200 drinking-water violations at Hydro PWA, 17% of them health-based - below the Oklahoma per-system average.

200
Total EPA violations on record
17%
Health-based (MCL / treatment failure)
1,060
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hydro PWA

Hydro PWA is a local-owned community water system that delivers drinking water to 1,060 residents in Hydro, Oklahoma (Caddo County) through 455 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 200 total violations for this system , of which 34 (17%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 137 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 Chlorine, recorded in 34 violations (MR). 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%).

Hydro PWA's 200 violations sit below 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
1,060
Total Violations
200
Health-Based Violations
34
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
455
County
Caddo
School/Daycare
No
MCL Violations
33
Monitoring Violations
137
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 34 2025
E. COLI MR 26 2024
Nitrate-Nitrite MCL 22 2016
Revised Total Coliform Rule MON 11 2024
Consumer Confidence Rule Other 10 2024
Nitrate MCL 8 2002
Nitrate-Nitrite MR 8 2021
2,4-D MR 8 2021
Lead and Copper Rule MR 6 2016
Coliform (TCR) MR 4 2010
Coliform (TCR) MCL 3 2010
cis-1,2-Dichloroethylene MR 2 2001
DICHLOROMETHANE 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
1,2-Dichloropropane MR 2 2001
1,1,2-Trichloroethane MR 2 2001
Benzene MR 2 2001
Toluene MR 2 2001
Styrene MR 2 2001
o-Dichlorobenzene MR 2 2001
Vinyl chloride MR 2 2001
Trichloroethylene MR 2 2001
Xylenes, Total MR 2 2001
CHLOROBENZENE MR 2 2001
1,2,4-Trichlorobenzene MR 2 2001
Ethylbenzene MR 2 2001

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 58 samples detected PFAS.

Contaminant Date Result MRL Status
ADONA 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 4/11/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 4/11/2023 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 4/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFDA 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 4/11/2023 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 4/11/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 4/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 4/11/2023 <2.00 ppt 2.00 ppt Not Detected
PFDoA 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 4/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/11/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 4/11/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 4/11/2023 <20.00 ppt 20.00 ppt Not Detected
PFHxS 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 4/11/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 4/11/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 4/11/2023 <8.00 ppt 8.00 ppt Not Detected
PFMBA 4/11/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 4/11/2023 <6.00 ppt 6.00 ppt Not Detected
PFMBA 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 10/4/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 10/4/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpS 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 10/4/2023 <4.00 ppt 4.00 ppt Not Detected
PFEESA 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
ADONA 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 10/4/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 10/4/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 10/4/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 10/4/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 10/4/2023 <8.00 ppt 8.00 ppt Not Detected
9Cl-PF3ONS 10/4/2023 <2.00 ppt 2.00 ppt Not Detected
PFHxS 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 10/4/2023 <6.00 ppt 6.00 ppt Not Detected
PFTrDA 10/4/2023 <7.00 ppt 7.00 ppt Not Detected
PFBS 10/4/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 10/4/2023 <4.00 ppt 4.00 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 Hydro PWA.

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 OK2000812 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 Chlorine MR 34 SDWIS / OK2000812 / 0999
2024 E. COLI MR 26 SDWIS / OK2000812 / 3014
2024 Revised Total Coliform Rule MON 11 SDWIS / OK2000812 / 8000
2024 Consumer Confidence Rule Other 10 SDWIS / OK2000812 / 7000
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / OK2000812 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / OK2000812 / 5200
2021 Nitrate-Nitrite MR 8 SDWIS / OK2000812 / 1038
2021 2,4-D MR 8 SDWIS / OK2000812 / 2105
2016 Nitrate-Nitrite MCL 22 SDWIS / OK2000812 / 1038
2016 Lead and Copper Rule MR 6 SDWIS / OK2000812 / 5000
2010 Coliform (TCR) MR 4 SDWIS / OK2000812 / 3100
2010 Coliform (TCR) MCL 3 SDWIS / OK2000812 / 3100
2002 Nitrate MCL 8 SDWIS / OK2000812 / 1040
2001 cis-1,2-Dichloroethylene MR 2 SDWIS / OK2000812 / 2380
2001 DICHLOROMETHANE MR 2 SDWIS / OK2000812 / 2964

How Hydro PWA Compares

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

Metric Hydro PWA Oklahoma avg Federal benchmark
Total violations 200 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 34 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 1,060 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 Hydro PWA water safe to drink? ▼
Hydro PWA (PWS ID: OK2000812) has 200 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,060 people using Groundwater sources.
How many people does Hydro PWA serve? ▼
Hydro PWA serves 1,060 people in Hydro, Oklahoma. It is a Local-owned system using Groundwater water sources with 455 service connections.
What type of violations does Hydro PWA have? ▼
Hydro PWA has 200 total violations: 34 health-based violations (MCL exceedances or treatment failures), 137 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hydro PWA water? ▼
No. Hydro PWA was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Hydro PWA use? ▼
Hydro PWA uses Groundwater 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.