OKLA ORDNANCE WORKS AUTHORITY

Q: Is OKLA ORDNANCE WORKS AUTHORITY water safe to drink?

OKLA ORDNANCE WORKS AUTHORITY (PWS ID: OK1021602) has 91 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 4,000 people using Surface Water sources.

Q: What type of violations does OKLA ORDNANCE WORKS AUTHORITY have?

OKLA ORDNANCE WORKS AUTHORITY has 91 total violations: 20 health-based violations (MCL exceedances or treatment failures), 15 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Q: Has PFAS been detected in OKLA ORDNANCE WORKS AUTHORITY water?

Yes. UCMR5 testing detected 1 PFAS compound in OKLA ORDNANCE WORKS AUTHORITY's water supply: PFOS. PFAS are persistent "forever chemicals" that do not break down in the environment.

Q: What water source does OKLA ORDNANCE WORKS AUTHORITY use?

OKLA ORDNANCE WORKS AUTHORITY uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.

Q: 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.

Reviewed byPlainWater Editorial, Drinking Water Quality Editorial Team · June 4, 2026

PWS ID: OK1021602 · PRYOR, Oklahoma 74362

OKLA ORDNANCE WORKS AUTHORITY serves 4,000 people in PRYOR, Oklahoma using Surface Water water sources. It has 91 recorded EPA violations, including 20 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).

Water Quality Snapshot: OKLA ORDNANCE WORKS AUTHORITY

OKLA ORDNANCE WORKS AUTHORITY is a state-owned community water system that delivers drinking water to 4,000 residents in PRYOR, Oklahoma (Mayes County) through 113 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 91 total violations for this system , of which 20 (22%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 15 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 15 violations (MCL, health-based). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 0.0057 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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. OKLA ORDNANCE WORKS AUTHORITY's 91 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.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served

4,000

Total Violations

Health-Based Violations

Water Source

Surface Water

System Details

System Type: Community
Owner Type: State
Connections: 113
County: Mayes
School/Daycare: No
MCL Violations: 15
Monitoring Violations: 15
Treatment Tech Violations: 5

Violation History

Contaminant violations recorded by EPA.

Contaminant	Category	Count	Latest
TTHM	MCL	15	1987
Coliform (TCR)	MR	8	2009
Chlorite	MR	5	2005
Interim Enhanced Surface Water Treatment Rule	TT	3	2013
LEAD AND COPPER RULE REVISIONS	RPT	2	2024
LEAD AND COPPER RULE REVISIONS	TT	2	2024
Lead and Copper Rule	MR	2	1994

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 120 samples detected PFAS.

Contaminant	Date	Result	MRL	Status
PFHpA	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
9Cl-PF3ONS	9/17/2024	<0.002 µg/L	0.002 µg/L	Not Detected
11Cl-PF3OUdS	9/17/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFUnA	9/17/2024	<0.002 µg/L	0.002 µg/L	Not Detected
PFHxA	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFDA	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFOA	9/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	9/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFBS	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
6:2 FTS	9/17/2024	<0.005 µg/L	0.005 µg/L	Not Detected
4:2 FTS	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
ADONA	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFNA	9/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
NFDHA	9/17/2024	<0.02 µg/L	0.02 µg/L	Not Detected
lithium	9/17/2024	<9 µg/L	9 µg/L	Not Detected
NMeFOSAA	9/17/2024	<0.006 µg/L	0.006 µg/L	Not Detected
PFTrDA	9/17/2024	<0.007 µg/L	0.007 µg/L	Not Detected
PFTA	9/17/2024	<0.008 µg/L	0.008 µg/L	Not Detected
NEtFOSAA	9/17/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFPeS	9/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
HFPO-DA	9/17/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFEESA	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFMBA	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeA	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFMPA	9/17/2024	<0.004 µg/L	0.004 µg/L	Not Detected
8:2 FTS	9/17/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFBA	9/17/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFHpS	9/17/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxA	6/5/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFHxS	6/5/2024	<0.003 µg/L	0.003 µg/L	Not Detected
11Cl-PF3OUdS	6/5/2024	<0.005 µg/L	0.005 µg/L	Not Detected
PFHpS	6/5/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFTrDA	6/5/2024	<0.007 µg/L	0.007 µg/L	Not Detected
NEtFOSAA	6/5/2024	<0.005 µg/L	0.005 µg/L	Not Detected
NMeFOSAA	6/5/2024	<0.006 µg/L	0.006 µg/L	Not Detected
lithium	6/5/2024	<9 µg/L	9 µg/L	Not Detected
PFHpA	6/5/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFTA	6/5/2024	<0.008 µg/L	0.008 µg/L	Not Detected
PFNA	6/5/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFOS	6/5/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFOA	6/5/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFDA	6/5/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFDoA	6/5/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFEESA	6/5/2024	<0.003 µg/L	0.003 µg/L	Not Detected
PFPeS	6/5/2024	<0.004 µg/L	0.004 µg/L	Not Detected
PFBS	6/5/2024	<0.003 µg/L	0.003 µg/L	Not Detected
NFDHA	6/5/2024	<0.02 µg/L	0.02 µg/L	Not Detected
PFUnA	6/5/2024	<0.002 µg/L	0.002 µg/L	Not Detected

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 OKLA ORDNANCE WORKS AUTHORITY.

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 OK1021602 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	RPT	2	SDWIS / OK1021602 / 5200
2024	LEAD AND COPPER RULE REVISIONS	TT	2	SDWIS / OK1021602 / 5200
2013	Interim Enhanced Surface Water Treatment Rule	TT	3	SDWIS / OK1021602 / 0300
2009	Coliform (TCR)	MR	8	SDWIS / OK1021602 / 3100
2005	Chlorite	MR	5	SDWIS / OK1021602 / 1009
1994	Lead and Copper Rule	MR	2	SDWIS / OK1021602 / 5000
1987	TTHM	MCL	15	SDWIS / OK1021602 / 2950

How OKLA ORDNANCE WORKS AUTHORITY Compares

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

Metric	OKLA ORDNANCE WORKS AUTHORITY	Oklahoma avg	Federal benchmark
Total violations	91	266.8	SDWA compliance — any non-zero count is a recorded breach
Health-based violations	20	90.2	Indicates a contaminant exceeded a federal MCL
PFAS detection	1 compound	60.8%	EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served	4,000	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 OKLA ORDNANCE WORKS AUTHORITY water safe to drink? ▼

OKLA ORDNANCE WORKS AUTHORITY (PWS ID: OK1021602) has 91 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 4,000 people using Surface Water sources.

How many people does OKLA ORDNANCE WORKS AUTHORITY serve? ▼

OKLA ORDNANCE WORKS AUTHORITY serves 4,000 people in PRYOR, Oklahoma. It is a State-owned system using Surface Water water sources with 113 service connections.

What type of violations does OKLA ORDNANCE WORKS AUTHORITY have? ▼

OKLA ORDNANCE WORKS AUTHORITY has 91 total violations: 20 health-based violations (MCL exceedances or treatment failures), 15 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.

Has PFAS been detected in OKLA ORDNANCE WORKS AUTHORITY water? ▼

Yes. UCMR5 testing detected 1 PFAS compound in OKLA ORDNANCE WORKS AUTHORITY's water supply: PFOS. PFAS are persistent "forever chemicals" that do not break down in the environment.

What water source does OKLA ORDNANCE WORKS AUTHORITY use? ▼

OKLA ORDNANCE WORKS AUTHORITY 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.

Explore PlainWater

Water in Oklahoma

All systems in state

All States

Water quality by state

Contaminants

PFAS & other pollutants

Guides

Understanding water quality

Related Data for Oklahoma

Environmental Data → Natural Hazards → Air Quality → Healthcare Access → Climate Data →

Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

Browse all → | Rankings →

Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by Kiznis Studio Editorial