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Community Water System · PWS OK1221615

Delaware Co RWD # 3

Jay, Oklahoma 74346 - drinking water served from surface water sources to 653 people, tracked in EPA SDWIS and UCMR5.

653
People served
492
EPA violations
455
Health-based
Untested
UCMR5 result

The verdict

EPA records 492 drinking-water violations at Delaware Co RWD # 3, 92% of them health-based - above the Oklahoma per-system average.

492
Total EPA violations on record
92%
Health-based (MCL / treatment failure)
653
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Delaware Co RWD # 3

Delaware Co RWD # 3 is a local-owned community water system that delivers drinking water to 653 residents in Jay, Oklahoma (Delaware County) through 873 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 492 total violations for this system , of which 455 (92%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 32 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is CARBON, TOTAL, recorded in 192 violations (TT, health-based). 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%).

Delaware Co RWD # 3's 492 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
653
Total Violations
492
Health-Based Violations
455
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
873
County
Delaware
School/Daycare
No
MCL Violations
263
Monitoring Violations
32
Treatment Tech Violations
192

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
CARBON, TOTAL TT 192 2024
TTHM MCL 185 2014
Total Haloacetic Acids (HAA5) MCL 78 2016
CARBON, TOTAL MR 16 2004
Coliform (TCR) MR 6 1993
Chlorine MR 6 2004
Lead and Copper Rule MR 2 1994
Total Haloacetic Acids (HAA5) MR 2 2004

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 Delaware Co RWD # 3.

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 OK1221615 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
2024 CARBON, TOTAL TT 192 SDWIS / OK1221615 / 2920
2016 Total Haloacetic Acids (HAA5) MCL 78 SDWIS / OK1221615 / 2456
2014 TTHM MCL 185 SDWIS / OK1221615 / 2950
2004 CARBON, TOTAL MR 16 SDWIS / OK1221615 / 2920
2004 Chlorine MR 6 SDWIS / OK1221615 / 0999
2004 Total Haloacetic Acids (HAA5) MR 2 SDWIS / OK1221615 / 2456
1994 Lead and Copper Rule MR 2 SDWIS / OK1221615 / 5000
1993 Coliform (TCR) MR 6 SDWIS / OK1221615 / 3100

How Delaware Co RWD # 3 Compares

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

Metric Delaware Co RWD # 3 Oklahoma avg Federal benchmark
Total violations 492 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 455 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 653 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 Delaware Co RWD # 3 water safe to drink? ▼
Delaware Co RWD # 3 (PWS ID: OK1221615) has 492 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 653 people using Surface Water sources.
How many people does Delaware Co RWD # 3 serve? ▼
Delaware Co RWD # 3 serves 653 people in Jay, Oklahoma. It is a Local-owned system using Surface Water water sources with 873 service connections.
What type of violations does Delaware Co RWD # 3 have? ▼
Delaware Co RWD # 3 has 492 total violations: 455 health-based violations (MCL exceedances or treatment failures), 32 monitoring/reporting violations, and 192 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Delaware Co RWD # 3 water? ▼
No PFAS testing data is available for Delaware Co RWD # 3 under the EPA's UCMR5 monitoring program.
What water source does Delaware Co RWD # 3 use? ▼
Delaware Co RWD # 3 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. 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.