PlainWater

Community Water System · PWS TX1840027

City of Willow Park

Willow Park, Texas 76087-8894 - drinking water served from surface water sources to 4,936 people, tracked in EPA SDWIS and UCMR5.

4,936
People served
56
EPA violations
13
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 56 drinking-water violations at City of Willow Park, 23% of them health-based - below the Texas per-system average.

56
Total EPA violations on record
23%
Health-based (MCL / treatment failure)
4,936
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: City of Willow Park

City of Willow Park is a local-owned community water system that delivers drinking water to 4,936 residents in Willow Park, Texas (Parker County) through 2,711 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 56 total violations for this system , of which 13 (23%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 25 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Public Notice, recorded in 13 violations (Other). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Texas, EPA tracks 7,351 public water systems serving 33,253,313 people, with 746,210 cumulative violations and 162,945 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 101.5 violations. Statewide, 1,068 of 1,147 UCMR5-tested systems have reported PFAS detections (93.1%).

City of Willow Park's 56 violations sit below the Texas 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
4,936
Total Violations
56
Health-Based Violations
13
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
2,711
County
Parker
School/Daycare
No
MCL Violations
13
Monitoring Violations
25
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Public Notice Other 13 2022
Chlorine MR 13 2019
Coliform (TCR) MCL 8 2009
Lead and Copper Rule MR 5 2021
Revised Total Coliform Rule MCL 5 2020
Revised Total Coliform Rule MON 4 2020
Coliform (TCR) MR 3 2009
Consumer Confidence Rule Other 2 2003

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 522 samples detected PFAS.

Contaminant Date Result MRL Status
NMeFOSAA 7/15/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 7/15/2024 <5.00 ppt 5.00 ppt Not Detected
PFTrDA 7/15/2024 <7.00 ppt 7.00 ppt Not Detected
PFTA 7/15/2024 <8.00 ppt 8.00 ppt Not Detected
PFHxA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 5/20/2024 <6.00 ppt 6.00 ppt Not Detected
PFOS 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
PFNA 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxS 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
PFDoA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 5/20/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 5/20/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 5/20/2024 <2.00 ppt 2.00 ppt Not Detected
ADONA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 5/20/2024 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 5/20/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 5/20/2024 <5.00 ppt 5.00 ppt Not Detected
PFDA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 5/20/2024 <5.00 ppt 5.00 ppt Not Detected
PFEESA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 5/20/2024 <20.00 ppt 20.00 ppt Not Detected
PFMBA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
PFMPA 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 5/20/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 5/20/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 5/20/2024 <5.00 ppt 5.00 ppt Not Detected
PFPeS 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
PFMPA 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
NFDHA 5/20/2024 <20.00 ppt 20.00 ppt Not Detected
8:2 FTS 5/20/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpS 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 5/20/2024 <8.00 ppt 8.00 ppt Not Detected
PFHpA 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 5/20/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 5/20/2024 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 5/20/2024 <6.00 ppt 6.00 ppt Not Detected
4:2 FTS 5/20/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
PFOA 5/20/2024 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 5/20/2024 <5.00 ppt 5.00 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 City of Willow Park.

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 TX1840027 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Texas Drinking Water Authority

Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch is the primacy agency that licenses and inspects City of Willow Park under EPA-delegated authority.

Open TX regulator portal

Source: Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch

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
2022 Public Notice Other 13 SDWIS / TX1840027 / 7500
2021 Lead and Copper Rule MR 5 SDWIS / TX1840027 / 5000
2020 Revised Total Coliform Rule MCL 5 SDWIS / TX1840027 / 8000
2020 Revised Total Coliform Rule MON 4 SDWIS / TX1840027 / 8000
2019 Chlorine MR 13 SDWIS / TX1840027 / 0999
2009 Coliform (TCR) MCL 8 SDWIS / TX1840027 / 3100
2009 Coliform (TCR) MR 3 SDWIS / TX1840027 / 3100
2003 Consumer Confidence Rule Other 2 SDWIS / TX1840027 / 7000

How City of Willow Park Compares

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

Metric City of Willow Park Texas avg Federal benchmark
Total violations 56 101.5 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 13 22.2 Indicates a contaminant exceeded a federal MCL
PFAS detection None 93.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 4,936 4,524 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,351 regulated public water systems in Texas.

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 City of Willow Park water safe to drink?
City of Willow Park (PWS ID: TX1840027) has 56 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 4,936 people using Surface Water sources.
How many people does City of Willow Park serve?
City of Willow Park serves 4,936 people in Willow Park, Texas. It is a Local-owned system using Surface Water water sources with 2,711 service connections.
What type of violations does City of Willow Park have?
City of Willow Park has 56 total violations: 13 health-based violations (MCL exceedances or treatment failures), 25 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in City of Willow Park water?
No. City of Willow Park was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does City of Willow Park use?
City of Willow Park 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.
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.