Noble Utilities Authority
EPA ID: OK2001411 · 5,750 people served · 3 ZIP codes
In the current EPA monitoring period, Noble Utilities Authority has 9 violations still listed as unresolved, with the utility supplying water to approximately 5,750 residents.
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 2 (2022) to 6 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Noble Utilities Authority Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Noble Utilities Authority serves a community with a median household income of $76,933 and an estimated 72,582 residents across its service area. Approximately 43% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Noble Utilities Authority'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 1% of homes in Cleveland 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 Noble Utilities Authority compares to EPA limits
What This Means For You
Uranium at 1 mg/L exceeds the EPA maximum of 0.03 mg/L. Kidney toxicity, increased cancer risk. Consider reverse osmosis filtration.
Contaminant 4100 at 6 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 6 mg/L exceeds the EPA maximum of mg/L.
Gross Alpha at 4 pCi/L exceeds the EPA maximum of pCi/L. Increased cancer risk from radioactive particles. Consider reverse osmosis filtration.
Contaminant 2959 at 1 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. 4 detections recorded.
Uranium was detected in this water system. reverse osmosis 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
Noble Utilities Authority (EPA ID: OK2001411) is a community water system in Oklahoma that serves approximately 5,750 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Average Home Safety Score: B (76/100)
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 |
|---|---|---|---|
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Resolved |
| July 1, 2024 | Contaminant 2959 | Monitoring | Unresolved |
| January 1, 2024 | Uranium | Monitoring | Resolved |
| October 1, 2023 | Contaminant 4100 | Monitoring | Resolved |
| July 1, 2023 | Contaminant 4100 | Monitoring | Unresolved |
| July 1, 2023 | Gross Alpha | Health-based | Unresolved |
| April 1, 2023 | Gross Alpha | Health-based | Unresolved |
| January 1, 2023 | Contaminant 4100 | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Contaminant 4100 | Other Violation | 6 | No |
| Stage 2 DBP Rule | Treatment Failure | 6 | Yes |
| Gross Alpha | Radionuclides | 4 | Yes |
| Uranium | Radionuclides | 1 | No |
| Contaminant 2959 | Other Violation | 1 | No |
| Revised Total Coliform Rule | Microbiological | 1 | No |
Health Risk Details
Gross Alpha Particle Activity (EPA limit: pCi/L)
Increased cancer risk from radioactive particles At-risk groups: long-term residents in areas with uranium or radium-rich geology, people on private wells in western US.
Removal methods: reverse osmosis, ion exchange (anion exchange for radium), lime softening. 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 |
|---|---|---|---|
| 73068 | 0.0013 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 Noble Utilities Authority (OK2001411) on EPA.gov.
Frequently Asked Questions
Is Noble Utilities Authority water safe to drink?
Noble Utilities Authority has recorded 7 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 Noble Utilities Authority serve?
Noble Utilities Authority serves approximately 5,750 people across 3 ZIP codes in Oklahoma.
Where does Noble Utilities Authority 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 NOBLE UTILITIES AUTHORITY 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: NOBLE UTILITIES AUTHORITY 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.
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 NOBLE UTILITIES AUTHORITY 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 →
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).
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monitoring · ASBESTOS2024-01-01/2024-12-31
MONITORING, ROUTINE MAJOR
Violations record from NOBLE UTILITIES AUTHORITY Consumer Confidence Report.
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.
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
Noble Utilities Authority (EPA ID: OK2001411) — request the latest Consumer Confidence Report or ask about specific contaminants.