Coweta Pwa
EPA ID: OK1021509 · 9,450 people served · 2 ZIP codes
Right now, Coweta Pwa shows 14 EPA violations marked active and unresolved — the provider continues to supply approximately 9,450 residents while each finding awaits closure.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 3 (2024) to 27 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Coweta Pwa Source: EPA SDWIS service area boundaries.
Service area boundary — Grade D
Service Area Demographics
The Coweta Pwa serves a community with a median household income of $83,824 and an estimated 59,423 residents across its service area.
Environmental Justice Note: 100% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
Coweta Pwa's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 1% of homes in Wagoner County, Oklahoma rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How Coweta Pwa compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 12 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Total Trihalomethanes (TTHM) at 2 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Fecal Coliform at 4 presence exceeds the EPA maximum of presence.
E. coli at 3 Zero tolerance (any positive sample triggers immediate action) exceeds the EPA maximum of Zero tolerance (any positive sample triggers immediate action). Severe GI illness; potentially fatal kidney failure in children. Consider UV disinfection (99.99%) filtration.
Contaminant 2042 at 2 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 12 detections recorded. 4 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Oklahoma
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Coweta Pwa (EPA ID: OK1021509) is a community water system in Oklahoma that serves approximately 9,450 people from surface water sources.
This system provides water to 2 ZIP codes across 2 communities.
Average Home Safety Score: D (52/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| June 30, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| April 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| January 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| December 30, 2024 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Resolved |
| October 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| August 1, 2024 | E. coli | Health-based | Unresolved |
| July 1, 2024 | Surface Water Treatment Rule | Monitoring | Resolved |
| July 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| April 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| March 31, 2024 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
| March 1, 2024 | Fecal Coliform | Monitoring | Unresolved |
| January 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| January 1, 2024 | Contaminant 2042 | Monitoring | Unresolved |
| December 30, 2023 | Total Trihalomethanes (TTHM) | Monitoring | Resolved |
| November 1, 2023 | Fecal Coliform | Monitoring | Resolved |
| November 1, 2023 | E. coli | Health-based | Unresolved |
| October 1, 2023 | Fecal Coliform | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 12 | Yes |
| Fecal Coliform | Microbiological | 4 | Yes |
| E. coli | Microbiological | 3 | Yes |
| Contaminant 2042 | Other Violation | 2 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
| Revised Total Coliform Rule | Microbiological | 1 | No |
Health Risk Details
Haloacetic Acids (HAA5) (EPA limit: 0.06 mg/L)
Cancer risk; reproductive & developmental effects At-risk groups: pregnant women, infants, long-term consumers of chlorinated municipal water.
Removal methods: granular activated carbon (GAC), carbon block filter, reverse osmosis. Find the right filter →
E. coli (EPA limit: Zero tolerance (any positive sample triggers immediate action))
Severe GI illness; potentially fatal kidney failure in children At-risk groups: children under 5, elderly, immunocompromised individuals, pregnant women.
Removal methods: UV disinfection (99.99%), chlorination, reverse osmosis. Find the right filter →
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by OK or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Coweta Pwa (OK1021509) on EPA.gov.
Frequently Asked Questions
Is Coweta Pwa water safe to drink?
Coweta Pwa has recorded 14 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Coweta Pwa serve?
Coweta Pwa serves approximately 9,450 people across 2 ZIP codes in Oklahoma.
Where does Coweta Pwa get its water?
The primary water source is surface water.
Contact Your Water Utility
Public-record contact information for the water utility serving this system. Use these channels to request water quality reports, ask about service, or report issues directly.
Contact information from COWETA PWA Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility, does not act as its agent, and does not provide customer support for it. Contact details shown are public-record information from CCR filings. For service issues, contact the utility directly using the information above.
Water Source & Treatment
Where this water originates and how it's treated before reaching your tap.
Source: COWETA PWA Consumer Confidence Report.
ZipCheckup is not affiliated with this water utility. Treatment and source data are sourced from the utility's published CCR filings.
Treatment regime
How this utility classifies its treatment process and what each reported treatment chemical does.
Treatment chemicals and what each one does
Chemical names are reported verbatim by the utility. Purpose categories are ZipCheckup annotations based on standard drinking-water treatment practice.
Watershed exposure sources reported
Land-use and natural conditions identified in the utility's source-water assessment as potential contamination sources upstream of treatment.
Treatment classification and chemical list sourced from COWETA PWA Consumer Confidence Report.
Treatment intensity is a ZipCheckup-derived classification based on the chemicals and processes the utility reports. Chemicals and contamination sources are taken verbatim from the utility's CCR filing. Routine federal monitoring and contaminant testing shown elsewhere on this page determine whether the water meets safety standards, not the treatment classification.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
PFAS Substances Detected in This System
This water system's Consumer Confidence Report disclosed the following PFAS compounds. Levels are from the utility's most recent reporting cycle.
In April 2024, EPA finalized the first National Primary Drinking Water Regulation for six PFAS. Public water systems have until 2029 to comply. EPA — PFAS regulation overview →
Source: Consumer Confidence Report disclosed by COWETA PWA.
ZipCheckup is not affiliated with this water utility. PFAS detection data is sourced from public Consumer Confidence Reports filed by the utility itself.
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
Notable events and violations
This section summarizes events the utility chose to disclose in its most recent Consumer Confidence Report, plus any federal compliance violations the utility recorded against itself. Both lists are utility-authored — ZipCheckup does not audit, judge, or reorder them.
Federal compliance violations on record
These entries are taken verbatim from the utility's CCR violations section. EPA defines four broad violation categories: Maximum Contaminant Level (MCL), Treatment Technique (TT), Monitoring & Reporting (M&R), and Public Notification (PN).
-
public notice · CONSUMER CONFIDENCE RULE2024-07-01
CCR REPORT
-
monitoring · Total Haloacetic Acids (HAA5)2023-12-30 - 2024-06-05
FAILURE SUBMIT OEL REPORT FOR HAA5
-
monitoring · TTHM2023-12-30 - 2024-06-05
FAILURE SUBMIT OEL REPORT FOR TTHM
-
monitoring · Total Haloacetic Acids (HAA5)2024-12-30
FAILURE SUBMIT OEL REPORT FOR HAA5
-
monitoring · TTHM2024-12-30
FAILURE SUBMIT OEL REPORT FOR TTHM
-
MCL · TTHM2024-01-01 - 2024-03-31
MCL, LRAA
-
MCL · TTHM2024-04-01 - 2024-06-30
MCL, LRAA
-
MCL · Total Haloacetic Acids (HAA5)2024-07-01 - 2024-09-30
MCL, LRAA
-
MCL · TTHM2024-07-01 - 2024-09-30
MCL, LRAA
-
MCL · Total Haloacetic Acids (HAA5)2024-10-01 - 2024-12-31
MCL, LRAA
-
MCL · TTHM2024-10-01 - 2024-12-31
MCL, LRAA
-
monitoring · Turbidity2024-03-01 - 2024-03-31
MONITORING, ROUTINE (IESWTR/LT1), MAJOR
-
monitoring · Sodium2024-01-01 - 2024-12-31
MONITORING, ROUTINE MAJOR
-
monitoring · Glyphosate2024-01-01 - 2024-12-31
MONITORING, ROUTINE MINOR
-
monitoring · Simazine2024-01-01 - 2024-12-31
MONITORING, ROUTINE MINOR
-
monitoring · Hexachlorocyclopentadiene2024-01-01 - 2024-12-31
MONITORING, ROUTINE MINOR
-
monitoring · Chlorine2024-08-01 - 2024-08-31
RES DISINFECT CONCENTRATION (SWTR)
Violations record from COWETA PWA Consumer Confidence Report.
Notable events from the utility's CCR
These bullet entries are the utility's own narration of operational, regulatory, or infrastructure events during the reporting period.
- TTHM and HAA5 MCL exceedances 2024
- OEL report failures for HAA5 2023-2024
- Turbidity monitoring violation March 2024
- Chlorine monitoring violation September 2023
- Total Coliform monitoring violation September 2023
- Glyphosate/Simazine/Hexachlorocyclopentadiene monitoring violations 2023-2024
- Sodium monitoring violation 2024
ZipCheckup note: items above reflect what the utility published in its most recent CCR. Federal violation records are also tracked separately by the EPA Safe Drinking Water Information System (SDWIS) — the SDWIS record is the authoritative federal source for any specific regulatory action.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Coweta Pwa (EPA ID: OK1021509) — request the latest Consumer Confidence Report or ask about specific contaminants.