PlainWater
States → Oklahoma

Community Water System · PWS OK2000713

Bryan Co. RWD #9

Hendrix, Oklahoma 74741 - drinking water served from groundwater sources to 820 people, tracked in EPA SDWIS and UCMR5.

820
People served
462
EPA violations
15
Health-based
Untested
UCMR5 result

The verdict

EPA records 462 drinking-water violations at Bryan Co. RWD #9, 3% of them health-based - above the Oklahoma per-system average.

462
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
820
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Bryan Co. RWD #9

Bryan Co. RWD #9 is a local-owned community water system that delivers drinking water to 820 residents in Hendrix, Oklahoma (Bryan County) through 396 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 462 total violations for this system , of which 15 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 425 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 Coliform (TCR), recorded in 20 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%).

Bryan Co. RWD #9's 462 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
820
Total Violations
462
Health-Based Violations
15
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
396
County
Bryan
School/Daycare
No
MCL Violations
13
Monitoring Violations
425
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 20 2006
Lead and Copper Rule MR 15 2012
Coliform (TCR) MCL 13 2004
Gross Alpha, Excl. Radon and U MR 12 2008
Combined Radium (-226 and -228) MR 12 2008
Gross Beta Particle Activity MR 12 2008
Endrin MR 12 2023
BHC-GAMMA MR 12 2023
Methoxychlor MR 12 2023
Dalapon MR 12 2023
Endothall MR 12 2023
Glyphosate MR 12 2023
Di(2-ethylhexyl) adipate MR 12 2023
OXAMYL MR 12 2023
Simazine MR 12 2023
Di(2-ethylhexyl) phthalate MR 12 2023
Picloram MR 12 2023
Dinoseb MR 12 2023
Hexachlorocyclopentadiene MR 12 2023
Carbofuran MR 12 2023
Atrazine MR 12 2023
Heptachlor MR 12 2023
Heptachlor epoxide MR 12 2023
2,4,5-TP MR 12 2023
HEXACHLOROBENZENE MR 12 2023
Benzo(a)pyrene MR 12 2023
Pentachlorophenol MR 12 2023
Total Polychlorinated Biphenyls (PCB) MR 12 2023
ETHYLENE DIBROMIDE MR 12 2023
Chlordane MR 12 2023

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 Bryan 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 OK2000713 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 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / OK2000713 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / OK2000713 / 5200
2023 Endrin MR 12 SDWIS / OK2000713 / 2005
2023 BHC-GAMMA MR 12 SDWIS / OK2000713 / 2010
2023 Methoxychlor MR 12 SDWIS / OK2000713 / 2015
2023 Dalapon MR 12 SDWIS / OK2000713 / 2031
2023 Endothall MR 12 SDWIS / OK2000713 / 2033
2023 Glyphosate MR 12 SDWIS / OK2000713 / 2034
2023 Di(2-ethylhexyl) adipate MR 12 SDWIS / OK2000713 / 2035
2023 OXAMYL MR 12 SDWIS / OK2000713 / 2036
2023 Simazine MR 12 SDWIS / OK2000713 / 2037
2023 Di(2-ethylhexyl) phthalate MR 12 SDWIS / OK2000713 / 2039
2023 Picloram MR 12 SDWIS / OK2000713 / 2040
2023 Dinoseb MR 12 SDWIS / OK2000713 / 2041
2023 Hexachlorocyclopentadiene MR 12 SDWIS / OK2000713 / 2042

How Bryan Co. RWD #9 Compares

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

Metric Bryan Co. RWD #9 Oklahoma avg Federal benchmark
Total violations 462 266.8 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 15 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 820 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 Bryan Co. RWD #9 water safe to drink? ▼
Bryan Co. RWD #9 (PWS ID: OK2000713) has 462 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 820 people using Groundwater sources.
How many people does Bryan Co. RWD #9 serve? ▼
Bryan Co. RWD #9 serves 820 people in Hendrix, Oklahoma. It is a Local-owned system using Groundwater water sources with 396 service connections.
What type of violations does Bryan Co. RWD #9 have? ▼
Bryan Co. RWD #9 has 462 total violations: 15 health-based violations (MCL exceedances or treatment failures), 425 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Bryan Co. RWD #9 water? ▼
No PFAS testing data is available for Bryan Co. RWD #9 under the EPA's UCMR5 monitoring program.
What water source does Bryan Co. RWD #9 use? ▼
Bryan Co. RWD #9 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.