Major County Rwd #1
EPA ID: OK2004407 · 1,000 people served · 3 ZIP codes
Compliance tracking for Major County Rwd #1 shows 19 pending violations logged in the EPA system — the supplier delivers water to approximately 1,000 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 4 (2021) to 3 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Major County Rwd #1 Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Major County Rwd #1 serves a community with a median household income of $67,692 and an estimated 5,511 residents across its service area. Approximately 71% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 56% 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?
Major County Rwd #1'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 Major 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 Major County Rwd #1 compares to EPA limits
What This Means For You
Arsenic at 20 mg/L exceeds the EPA maximum of 0.01 mg/L.
Total Trihalomethanes (TTHM) at 3 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Revised Total Coliform Rule at 9 presence exceeds the EPA maximum of presence.
Consumer Confidence Report Rule at 5 mg/L exceeds the EPA maximum of mg/L.
Total Coliform at 2 presence exceeds the EPA maximum of presence.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
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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
Major County Rwd #1 (EPA ID: OK2004407) is a community water system in Oklahoma that serves approximately 1,000 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
Average Home Safety Score: C (66/100)
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 | Surface Water Treatment Rule | Monitoring | Unresolved |
| July 1, 2025 | Revised Total Coliform Rule | Monitoring | Unresolved |
| July 1, 2025 | Consumer Confidence Report Rule | Monitoring | Unresolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Monitoring | Unresolved |
| January 1, 2025 | Arsenic | Monitoring | Resolved |
| January 1, 2025 | Arsenic | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
| October 11, 2024 | Total Coliform | Monitoring | Unresolved |
| October 1, 2024 | Arsenic | Health-based | Unresolved |
| July 1, 2024 | Arsenic | Health-based | Unresolved |
| April 1, 2024 | Arsenic | Health-based | Unresolved |
| April 1, 2024 | Revised Total Coliform Rule | Monitoring | Resolved |
| April 1, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| January 1, 2024 | Arsenic | Health-based | Resolved |
| November 1, 2023 | Consumer Confidence Report Rule | Monitoring | Resolved |
| October 2, 2023 | Surface Water Treatment Rule | Monitoring | Resolved |
| October 1, 2023 | Arsenic | Health-based | Resolved |
| October 1, 2023 | Stage 1 DBP Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Arsenic | Inorganic | 20 | Yes |
| Revised Total Coliform Rule | Microbiological | 9 | No |
| Consumer Confidence Report Rule | Reporting Failure | 5 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 3 | No |
| Total Coliform | Microbiological | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 73737 | 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 Major County Rwd #1 (OK2004407) on EPA.gov.
Frequently Asked Questions
Is Major County Rwd #1 water safe to drink?
Major County Rwd #1 has recorded 18 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 Major County Rwd #1 serve?
Major County Rwd #1 serves approximately 1,000 people across 3 ZIP codes in Oklahoma.
Where does Major County Rwd #1 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 MAJOR COUNTY RWD #1 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: MAJOR COUNTY RWD #1 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 MAJOR COUNTY RWD #1 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.
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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MCL · NITRATE-NITRITE2024-01-01 to 2024-12-31
NITRATE-NITRITE violated MCL for a single sample each quarter of 2024.
-
monitoring · CHLORINE2024-04-01 to 2024-04-30
Routine monitoring for disinfection byproducts missed.
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monitoring · E. COLI2024-04-01 to 2024-04-30
Missed routine major monitoring for Total Coliform Rule.
-
monitoring2023-09-01 to 2023-11-30
Multiple monitoring periods for CHLORINE, DISINFECTANT BY-PRODUCT, and TOTAL COLIFORM were missed in September, October, and November 2023.
Violations record from MAJOR COUNTY RWD #1 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.
- Infants below 6 months could be affected by nitrate levels exceeding MCL.
- Multiple monitoring violations in 2023-2024 for chlorine and total coliform.
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
Major County Rwd #1 (EPA ID: OK2004407) — request the latest Consumer Confidence Report or ask about specific contaminants.