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Community Water System · PWS OK3004907

McIntosh Co. RWS & Swmd #9

Checotah, Oklahoma 74426 - drinking water served from surface water sources to 1,761 people, tracked in EPA SDWIS and UCMR5.

1,761
People served
245
EPA violations
172
Health-based
Untested
UCMR5 result

The verdict

EPA records 245 drinking-water violations at McIntosh Co. RWS & Swmd #9, 70% of them health-based - below the Oklahoma per-system average.

245
Total EPA violations on record
70%
Health-based (MCL / treatment failure)
1,761
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: McIntosh Co. RWS & Swmd #9

McIntosh Co. RWS & Swmd #9 is a local-owned community water system that delivers drinking water to 1,761 residents in Checotah, Oklahoma (McIntosh County) through 592 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 245 total violations for this system , of which 172 (70%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 67 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 TTHM, recorded in 164 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%).

McIntosh Co. RWS & Swmd #9's 245 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
1,761
Total Violations
245
Health-Based Violations
172
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
592
County
McIntosh
School/Daycare
No
MCL Violations
171
Monitoring Violations
67
Treatment Tech Violations
1

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MCL 164 2025
TTHM MR 33 2023
Coliform (TCR) MR 15 2007
Chlorine MR 8 2021
Total Haloacetic Acids (HAA5) MR 7 2022
Coliform (TCR) MCL 7 2004
Lead and Copper Rule MR 4 2019
LEAD AND COPPER RULE REVISIONS TT 1 2024
Consumer Confidence Rule Other 1 2025
LEAD AND COPPER RULE REVISIONS RPT 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 McIntosh Co. RWS & Swmd #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 OK3004907 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 TTHM MCL 164 SDWIS / OK3004907 / 2950
2025 Consumer Confidence Rule Other 1 SDWIS / OK3004907 / 7000
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / OK3004907 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / OK3004907 / 5200
2023 TTHM MR 33 SDWIS / OK3004907 / 2950
2022 Total Haloacetic Acids (HAA5) MR 7 SDWIS / OK3004907 / 2456
2021 Chlorine MR 8 SDWIS / OK3004907 / 0999
2019 Lead and Copper Rule MR 4 SDWIS / OK3004907 / 5000
2007 Coliform (TCR) MR 15 SDWIS / OK3004907 / 3100
2004 Coliform (TCR) MCL 7 SDWIS / OK3004907 / 3100

How McIntosh Co. RWS & Swmd #9 Compares

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

Metric McIntosh Co. RWS & Swmd #9 Oklahoma avg Federal benchmark
Total violations 245 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 172 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 1,761 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 McIntosh Co. RWS & Swmd #9 water safe to drink? ▼
McIntosh Co. RWS & Swmd #9 (PWS ID: OK3004907) has 245 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,761 people using Surface Water sources.
How many people does McIntosh Co. RWS & Swmd #9 serve? ▼
McIntosh Co. RWS & Swmd #9 serves 1,761 people in Checotah, Oklahoma. It is a Local-owned system using Surface Water water sources with 592 service connections.
What type of violations does McIntosh Co. RWS & Swmd #9 have? ▼
McIntosh Co. RWS & Swmd #9 has 245 total violations: 172 health-based violations (MCL exceedances or treatment failures), 67 monitoring/reporting violations, and 1 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in McIntosh Co. RWS & Swmd #9 water? ▼
No PFAS testing data is available for McIntosh Co. RWS & Swmd #9 under the EPA's UCMR5 monitoring program.
What water source does McIntosh Co. RWS & Swmd #9 use? ▼
McIntosh Co. RWS & Swmd #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.