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Community Water System · PWS OK4002663

Winter Creek Water Company, LLC

Blanchard, Oklahoma 73010 - drinking water served from groundwater sources to 46 people, tracked in EPA SDWIS and UCMR5.

46
People served
117
EPA violations
9
Health-based
Untested
UCMR5 result

The verdict

EPA records 117 drinking-water violations at Winter Creek Water Company, LLC, 8% of them health-based - below the Oklahoma per-system average.

117
Total EPA violations on record
8%
Health-based (MCL / treatment failure)
46
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Winter Creek Water Company, LLC

Winter Creek Water Company, LLC is a private-owned community water system that delivers drinking water to 46 residents in Blanchard, Oklahoma (Grady County) through 10 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 117 total violations for this system , of which 9 (8%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 100 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 Coliform (TCR), recorded in 65 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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%).

Winter Creek Water Company, LLC's 117 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
46
Total Violations
117
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
10
County
Grady
School/Daycare
No
MCL Violations
8
Monitoring Violations
100
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 65 2014
Chlorine MR 12 2021
Coliform (TCR) MCL 8 2014
Consumer Confidence Rule Other 6 2025
TTHM MR 4 2012
Lead and Copper Rule MR 4 2010
Total Haloacetic Acids (HAA5) MR 4 2012
Nitrate-Nitrite MR 4 2020
Revised Total Coliform Rule MON 4 2021
E. COLI MR 3 2014
LEAD AND COPPER RULE REVISIONS RPT 1 2024
LEAD AND COPPER RULE REVISIONS TT 1 2024

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 Winter Creek Water Company, LLC.

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 OK4002663 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 Consumer Confidence Rule Other 6 SDWIS / OK4002663 / 7000
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / OK4002663 / 5200
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / OK4002663 / 5200
2021 Chlorine MR 12 SDWIS / OK4002663 / 0999
2021 Revised Total Coliform Rule MON 4 SDWIS / OK4002663 / 8000
2020 Nitrate-Nitrite MR 4 SDWIS / OK4002663 / 1038
2014 Coliform (TCR) MR 65 SDWIS / OK4002663 / 3100
2014 Coliform (TCR) MCL 8 SDWIS / OK4002663 / 3100
2014 E. COLI MR 3 SDWIS / OK4002663 / 3014
2012 TTHM MR 4 SDWIS / OK4002663 / 2950
2012 Total Haloacetic Acids (HAA5) MR 4 SDWIS / OK4002663 / 2456
2010 Lead and Copper Rule MR 4 SDWIS / OK4002663 / 5000

How Winter Creek Water Company, LLC Compares

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

Metric Winter Creek Water Company, LLC Oklahoma avg Federal benchmark
Total violations 117 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 9 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 46 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 Winter Creek Water Company, LLC water safe to drink? ▼
Winter Creek Water Company, LLC (PWS ID: OK4002663) has 117 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 46 people using Groundwater sources.
How many people does Winter Creek Water Company, LLC serve? ▼
Winter Creek Water Company, LLC serves 46 people in Blanchard, Oklahoma. It is a Private-owned system using Groundwater water sources with 10 service connections.
What type of violations does Winter Creek Water Company, LLC have? ▼
Winter Creek Water Company, LLC has 117 total violations: 9 health-based violations (MCL exceedances or treatment failures), 100 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Winter Creek Water Company, LLC water? ▼
No PFAS testing data is available for Winter Creek Water Company, LLC under the EPA's UCMR5 monitoring program.
What water source does Winter Creek Water Company, LLC use? ▼
Winter Creek Water Company, LLC 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. 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.