Kingfisher
EPA ID: OK2003702 · 5,073 people served · 3 ZIP codes
Compliance tracking for Kingfisher shows 14 pending violations logged in the EPA system — the supplier delivers water to approximately 5,073 residents while those findings remain open.
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 (2021) to 12 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Kingfisher Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Kingfisher serves a community with a median household income of $61,750 and an estimated 8,141 residents across its service area. Approximately 66% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Kingfisher's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 0% of homes in Kingfisher 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 Kingfisher compares to EPA limits
What This Means For You
Arsenic at 4 mg/L exceeds the EPA maximum of 0.01 mg/L.
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.
Contaminant 2959 at 5 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 4 mg/L exceeds the EPA maximum of mg/L.
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
Kingfisher (EPA ID: OK2003702) is a community water system in Oklahoma that serves approximately 5,073 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Average Home Safety Score: B (81/100)
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 |
| April 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| April 1, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Unresolved |
| January 1, 2025 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| January 1, 2025 | Contaminant 2946 | Monitoring | Resolved |
| December 30, 2024 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
| November 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| November 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Resolved |
| October 1, 2024 | Arsenic | Monitoring | Resolved |
| October 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| October 1, 2024 | Contaminant 2274 | Monitoring | Resolved |
| July 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| July 1, 2024 | Contaminant 2959 | Monitoring | Resolved |
| June 30, 2024 | Haloacetic Acids (HAA5) | Monitoring | Resolved |
| April 1, 2024 | Haloacetic Acids (HAA5) | Health-based | Unresolved |
| April 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| April 1, 2024 | Arsenic | Monitoring | Resolved |
| February 29, 2024 | Total Trihalomethanes (TTHM) | 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 |
| Contaminant 2959 | Other Violation | 5 | No |
| Arsenic | Inorganic | 4 | Yes |
| Stage 2 DBP Rule | Treatment Failure | 4 | Yes |
| Revised Total Coliform Rule | Microbiological | 4 | No |
| Contaminant 2274 | Other Violation | 2 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | No |
| Consumer Confidence Report Rule | Reporting Failure | 2 | No |
| Contaminant 2946 | Other Violation | 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 →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 73750 | 0.0035 mg/L | No | N/A |
| 73756 | 0.002 mg/L | No | N/A |
| 73734 | 0.0011 mg/L | No | N/A |
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 Kingfisher (OK2003702) on EPA.gov.
Frequently Asked Questions
Is Kingfisher water safe to drink?
Kingfisher has recorded 11 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 Kingfisher serve?
Kingfisher serves approximately 5,073 people across 3 ZIP codes in Oklahoma.
Where does Kingfisher get its water?
The primary water source is groundwater.
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 KINGFISHER 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: KINGFISHER 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 KINGFISHER 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: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
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 →
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).
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monitoring · 1,2-DIBROMO-3-CHLOROPROPANE2025-01-01 to 2025-03-31
Missing monitoring samples.
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monitoring · BHC-GAMMA2024-10-01 to 2024-12-31
Missing monitoring samples.
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monitoring · BHC-GAMMA2024-01-01 to 2024-03-31
Missing monitoring samples.
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monitoring · DISINFECTANT BY-PRODUCT2024-04-01 to 2024-06-30
Missing monitoring samples.
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monitoring · ENDRIN2024-01-01 to 2024-03-31
Missing monitoring samples.
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monitoring · ENDRIN2024-10-01 to 2024-12-31
Missing monitoring samples.
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monitoring · ETHYLENE DIBROMIDE2025-01-01 to 2025-03-31
Missing monitoring samples.
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monitoring · HEPTACHLOR2024-10-01 to 2024-12-31
Missing monitoring samples.
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monitoring · HEPTACHLOR2024-01-01 to 2024-03-31
Missing monitoring samples.
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monitoring · HEPTACHLOR EPOXIDE2024-10-01 to 2024-12-31
Missing monitoring samples.
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monitoring · HEPTACHLOR EPOXIDE2024-01-01 to 2024-03-31
Missing monitoring samples.
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monitoring · HEXACHLOROBENZENE2024-10-01 to 2024-12-31
Missing monitoring samples.
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monitoring · HEXACHLOROBENZENE2024-01-01 to 2024-03-31
Missing monitoring samples.
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monitoring · HEXACHLOROCYCLOPENTADIENE2024-10-01 to 2024-12-31
Missing monitoring samples.
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monitoring · METHOXYCHLOR2024-01-01 to 2024-03-31
Missing monitoring samples.
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monitoring · METHOXYCHLOR2024-10-01 to 2024-12-31
Missing monitoring samples.
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monitoring · SYNTHETIC ORGANIC CHEMICALS (REGULATED)2024-07-01 to 2024-09-30
Missing monitoring samples.
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MCL · TTHM2024-01-01 to 2024-03-31
MCL exceedance for TTHM.
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MCL · TTHM2024-04-01 to 2024-06-30
MCL exceedance for TTHM.
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MCL · TTHM2024-07-01 to 2024-09-30
MCL exceedance for TTHM.
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MCL · TTHM2024-10-01 to 2024-12-31
MCL exceedance for TTHM.
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treatment technique · TTHM2024-06-30 to 2025-04-28
FAILURE SUBMIT OEL REPORT FOR TTHM.
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treatment technique · TTHM2024-12-30 to 2025-04-28
FAILURE SUBMIT OEL REPORT FOR TTHM.
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public notice · TTHM2024-01-01 to 2024-03-31
Notification of MCL violation.
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public notice · TTHM2024-04-01 to 2024-06-30
Notification of MCL violation.
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public notice · TTHM2024-07-01 to 2024-09-30
Notification of MCL violation.
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public notice · TTHM2024-10-01 to 2024-12-31
Notification of MCL violation.
Violations record from KINGFISHER 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.
- Failed to submit OEL report for TTHM in 2024
- Coliform detected in November 2024
- Multiple monitoring violations for pesticides and disinfection byproducts in 2024-2025
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.
- #25 / 100 Most Unresolved Health Violations (U.S.)
- #12 / 50 Most Unresolved Health Violations (Oklahoma)
- #18 / 50 Highest Exposure Burden (Oklahoma)
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
Kingfisher (EPA ID: OK2003702) — request the latest Consumer Confidence Report or ask about specific contaminants.