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Community Water System · PWS OK1021733

Cherokee Co. RWD #9

Hulbert, Oklahoma 74441 - drinking water served from surface water sources to 200 people, tracked in EPA SDWIS and UCMR5.

200
People served
547
EPA violations
260
Health-based
Untested
UCMR5 result

The verdict

EPA records 547 drinking-water violations at Cherokee Co. RWD #9, 48% of them health-based - above the Oklahoma per-system average.

547
Total EPA violations on record
48%
Health-based (MCL / treatment failure)
200
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Cherokee Co. RWD #9

Cherokee Co. RWD #9 is a local-owned community water system that delivers drinking water to 200 residents in Hulbert, Oklahoma (Cherokee County) through 80 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 547 total violations for this system , of which 260 (48%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 260 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 TTHM, recorded in 114 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. Statewide, 101 of 166 UCMR5-tested systems have reported PFAS detections (60.8%).

Cherokee Co. RWD #9's 547 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
200
Total Violations
547
Health-Based Violations
260
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
80
County
Cherokee
School/Daycare
No
MCL Violations
196
Monitoring Violations
260
Treatment Tech Violations
64

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 114 2022
Total Haloacetic Acids (HAA5) MCL 68 2022
CARBON, TOTAL TT 50 2021
Revised Total Coliform Rule MON 39 2024
CARBON, TOTAL MR 36 2021
Chlorine MR 35 2024
TTHM MR 29 2024
Total Haloacetic Acids (HAA5) MR 27 2024
Coliform (TCR) MR 26 2010
Interim Enhanced Surface Water Treatment Rule MR 20 2021
Surface Water Treatment Rule TT 13 1999
Revised Total Coliform Rule MCL 10 2021
Lead and Copper Rule MR 5 2010
Coliform (TCR) MCL 4 2010
Consumer Confidence Rule Other 4 2017
Nitrate-Nitrite MR 3 2021
1,2,4-Trichlorobenzene MR 2 2002
cis-1,2-Dichloroethylene MR 2 2002
DICHLOROMETHANE MR 2 2002
o-Dichlorobenzene MR 2 2002
Vinyl chloride MR 2 2002
1,1-Dichloroethylene MR 2 2002
trans-1,2-Dichloroethylene MR 2 2002
1,1,1-Trichloroethane MR 2 2002
Carbon tetrachloride MR 2 2002
Trichloroethylene MR 2 2002
1,1,2-Trichloroethane MR 2 2002
Benzene MR 2 2002
Ethylbenzene MR 2 2002
Xylenes, Total MR 2 2002

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 Cherokee Co. RWD #9.

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 OK1021733 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 Revised Total Coliform Rule MON 39 SDWIS / OK1021733 / 8000
2024 Chlorine MR 35 SDWIS / OK1021733 / 0999
2024 TTHM MR 29 SDWIS / OK1021733 / 2950
2024 Total Haloacetic Acids (HAA5) MR 27 SDWIS / OK1021733 / 2456
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / OK1021733 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / OK1021733 / 5200
2022 TTHM MCL 114 SDWIS / OK1021733 / 2950
2022 Total Haloacetic Acids (HAA5) MCL 68 SDWIS / OK1021733 / 2456
2021 CARBON, TOTAL TT 50 SDWIS / OK1021733 / 2920
2021 CARBON, TOTAL MR 36 SDWIS / OK1021733 / 2920
2021 Interim Enhanced Surface Water Treatment Rule MR 20 SDWIS / OK1021733 / 0300
2021 Revised Total Coliform Rule MCL 10 SDWIS / OK1021733 / 8000
2021 Nitrate-Nitrite MR 3 SDWIS / OK1021733 / 1038
2017 Consumer Confidence Rule Other 4 SDWIS / OK1021733 / 7000
2010 Coliform (TCR) MR 26 SDWIS / OK1021733 / 3100

How Cherokee Co. RWD #9 Compares

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

Metric Cherokee Co. RWD #9 Oklahoma avg Federal benchmark
Total violations 547 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 260 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 200 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 Cherokee Co. RWD #9 water safe to drink? ▼
Cherokee Co. RWD #9 (PWS ID: OK1021733) has 547 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 200 people using Surface Water sources.
How many people does Cherokee Co. RWD #9 serve? ▼
Cherokee Co. RWD #9 serves 200 people in Hulbert, Oklahoma. It is a Local-owned system using Surface Water water sources with 80 service connections.
What type of violations does Cherokee Co. RWD #9 have? ▼
Cherokee Co. RWD #9 has 547 total violations: 260 health-based violations (MCL exceedances or treatment failures), 260 monitoring/reporting violations, and 64 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Cherokee Co. RWD #9 water? ▼
No PFAS testing data is available for Cherokee Co. RWD #9 under the EPA's UCMR5 monitoring program.
What water source does Cherokee Co. RWD #9 use? ▼
Cherokee Co. RWD #9 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.