Lone Grove
EPA ID: OK2001007 · 4,863 people served · 3 ZIP codes
ZipCheckup's reading of EPA SDWIS for Lone Grove (OK2001007): 2 unresolved EPA violations on record. The EPA enforcement database lists 2 active violations for Lone Grove - a provider that delivers drinking water to approximately 4,863 people and has not yet formally resolved those findings.
Data: EPA SDWIS
Service Area Map
Coverage area for Lone Grove Source: EPA SDWIS service area boundaries.
Service area boundary - Grade A
Service Area Demographics
The Lone Grove serves a community with a median household income of $67,277 and an estimated 40,150 residents across its service area. Approximately 51% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 78% 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?
Lone Grove'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.
Infrastructure Risk
Detected Contaminants
How Lone Grove compares to EPA limits
What This Means For You
Total Coliform at 2 presence exceeds the EPA maximum of presence.
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Contaminant 2034 at 1 mg/L exceeds the EPA maximum of mg/L.
Gross Alpha at 1 pCi/L exceeds the EPA maximum of pCi/L. Increased cancer risk from radioactive particles. Consider reverse osmosis filtration.
Contaminant 4100 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. 12 detections recorded.
Gross Alpha 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
Lone Grove (EPA ID: OK2001007) is a community water system in Oklahoma that serves approximately 4,863 people from groundwater sources.
This system provides water to 3 ZIP codes across 3 communities.
ZIP-Area Home Safety Context: A (93/100)
This is the average Home Safety Score for 1 of 3 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Status breakdown for accepted records with record years 2021-2026: 5 resolved, 4 archived, 0 addressed, and 2 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| February 17, 2026 | Total Coliform | Non-health-based | Unaddressed (current) |
| February 17, 2026 | Total Coliform | Non-health-based | Unaddressed (current) |
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Non-health-based | Resolved |
| September 1, 2023 | Consumer Confidence Report Rule | Non-health-based | Resolved |
| July 1, 2023 | Revised Total Coliform Rule | Non-health-based | Resolved |
| July 1, 2023 | Contaminant 2034 | Non-health-based | Resolved |
| January 1, 2023 | Gross Alpha | Non-health-based | Archived |
| January 1, 2023 | Combined Radium | Non-health-based | Archived |
| January 1, 2023 | Gross Beta | Non-health-based | Archived |
| January 1, 2023 | Contaminant 4100 | Non-health-based | Archived |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Coliform | Microbiological | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Contaminant 2034 | Other Violation | 1 | No |
| Gross Alpha | Radionuclides | 1 | No |
| Combined Radium | Radionuclides | 1 | No |
| Gross Beta | Radionuclides | 1 | No |
| Contaminant 4100 | Other Violation | 1 | No |
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
| Revised Total Coliform Rule | Microbiological | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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 Lone Grove (OK2001007) on EPA.gov.
Frequently Asked Questions
Is Lone Grove water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Lone Grove serve?
Lone Grove serves approximately 4,863 people across 3 ZIP codes in Oklahoma.
Where does Lone Grove get its water?
The primary water source is groundwater.
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 →
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
How to cite this page
ZipCheckup. (n.d.). Lone Grove (OK): 1 Health Violation. https://zipcheckup.com/water-system/ok2001007/
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title = {{Lone Grove (OK): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ok2001007/}
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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
Lone Grove (EPA ID: OK2001007) - request the latest Consumer Confidence Report or ask about specific contaminants.