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RINGWOOD

PWS ID: OK2004405 · RINGWOOD, Oklahoma 73768

RINGWOOD serves 424 people in RINGWOOD, Oklahoma using Groundwater water sources. It has 190 recorded EPA violations, including 28 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: RINGWOOD

RINGWOOD is a local-owned community water system that delivers drinking water to 424 residents in RINGWOOD, Oklahoma (Major County) through 223 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 190 total violations for this system , of which 28 (15%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 134 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Combined Uranium, recorded in 23 violations (MCL, 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. RINGWOOD's 190 violations sit below the Oklahoma average. Statewide, 101 of 166 UCMR5-tested systems have reported PFAS detections (60.8%). 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
424
Total Violations
190
Health-Based Violations
28
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
223
County
Major
School/Daycare
No
MCL Violations
28
Monitoring Violations
134
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Uranium MCL 23 2014
Combined Uranium MR 16 2010
Coliform (TCR) MR 14 2011
Gross Beta Particle Activity MR 14 2010
Gross Alpha, Excl. Radon and U MR 13 2010
Combined Radium (-226 and -228) MR 13 2010
Nitrate-Nitrite MR 10 2006
Revised Total Coliform Rule MON 8 2020
Chlorine MR 8 2020
Arsenic MR 7 2005
Consumer Confidence Rule Other 6 2008
Total Haloacetic Acids (HAA5) MCL 5 2004
TTHM MR 3 2006
Total Haloacetic Acids (HAA5) MR 3 2006
E. COLI MR 3 2023
Lead and Copper Rule MR 2 1994
1,2,4-Trichlorobenzene MR 1 2003
cis-1,2-Dichloroethylene MR 1 2003
Xylenes, Total MR 1 2003
Vinyl chloride MR 1 2003
1,1,1-Trichloroethane MR 1 2003
1,2-Dichloropropane MR 1 2003
Trichloroethylene MR 1 2003
1,1,2-Trichloroethane MR 1 2003
Toluene MR 1 2003
Benzene MR 1 2003
p-Dichlorobenzene MR 1 2003
Styrene MR 1 2003
trans-1,2-Dichloroethylene MR 1 2003
1,1-Dichloroethylene MR 1 2003

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 RINGWOOD.

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 OK2004405 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
2023 E. COLI MR 3 SDWIS / OK2004405 / 3014
2020 Revised Total Coliform Rule MON 8 SDWIS / OK2004405 / 8000
2020 Chlorine MR 8 SDWIS / OK2004405 / 0999
2014 Combined Uranium MCL 23 SDWIS / OK2004405 / 4006
2011 Coliform (TCR) MR 14 SDWIS / OK2004405 / 3100
2010 Combined Uranium MR 16 SDWIS / OK2004405 / 4006
2010 Gross Beta Particle Activity MR 14 SDWIS / OK2004405 / 4100
2010 Gross Alpha, Excl. Radon and U MR 13 SDWIS / OK2004405 / 4000
2010 Combined Radium (-226 and -228) MR 13 SDWIS / OK2004405 / 4010
2008 Consumer Confidence Rule Other 6 SDWIS / OK2004405 / 7000
2006 Nitrate-Nitrite MR 10 SDWIS / OK2004405 / 1038
2006 TTHM MR 3 SDWIS / OK2004405 / 2950
2006 Total Haloacetic Acids (HAA5) MR 3 SDWIS / OK2004405 / 2456
2005 Arsenic MR 7 SDWIS / OK2004405 / 1005
2004 Total Haloacetic Acids (HAA5) MCL 5 SDWIS / OK2004405 / 2456

How RINGWOOD Compares

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

Metric RINGWOOD Oklahoma avg Federal benchmark
Total violations 190 266.8 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 28 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 424 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is RINGWOOD water safe to drink? ▼
RINGWOOD (PWS ID: OK2004405) has 190 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 424 people using Groundwater sources.
How many people does RINGWOOD serve? ▼
RINGWOOD serves 424 people in RINGWOOD, Oklahoma. It is a Local-owned system using Groundwater water sources with 223 service connections.
What type of violations does RINGWOOD have? ▼
RINGWOOD has 190 total violations: 28 health-based violations (MCL exceedances or treatment failures), 134 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in RINGWOOD water? ▼
No PFAS testing data is available for RINGWOOD under the EPA's UCMR5 monitoring program.
What water source does RINGWOOD use? ▼
RINGWOOD 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.

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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.

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