Greene Company-northwest Reg Water
EPA ID: OH2903512 · 41,895 people served · 11 ZIP codes
ZipCheckup's reading of EPA SDWIS for Greene Company-northwest Reg Water (OH2903512): 1 unresolved EPA violation on record. In the current EPA monitoring period, Greene Company-northwest Reg Water has 1 violation still listed as unresolved, with the utility supplying water to approximately 41,895 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Greene Company-northwest Reg Water Source: EPA SDWIS service area boundaries.
Service area boundary - Grade C
Service Area Demographics
The Greene Company-northwest Reg Water serves a community with a median household income of $83,378 and an estimated 182,149 residents across its service area. Approximately 68% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Greene Company-northwest Reg Water'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.
Superfund Proximity Note: This service area ranks in the 71th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Detected Contaminants
How Greene Company-northwest Reg Water compares to EPA limits
What This Means For You
Surface Water Treatment Rule 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. 18 detections recorded. 5 exceed federal EPA limits (4 ppt for PFOA/PFOS).
Comparable Water Systems
Similar-sized systems in Ohio
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
Greene Company-northwest Reg Water (EPA ID: OH2903512) is a community water system in Ohio that serves approximately 41,895 people from groundwater sources.
This system provides water to 11 ZIP codes across 7 communities.
ZIP-Area Home Safety Context: C (61/100)
This is the average Home Safety Score for 4 of 11 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: 0 resolved, 0 archived, 0 addressed, and 1 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 |
|---|---|---|---|
| January 7, 2026 | Surface Water Treatment Rule | Non-health-based | Unaddressed (current) |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 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 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
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 OH or modeled from parcel and building-footprint data.
- 45301 - Alpha
- 45305 - Bellbrook
- 45324 - Fairborn
- 45370 - Spring Valley
- 45384 - Wilberforce
- 45385 - Xenia
- 45430 - Dayton
- 45431 - Dayton
- 45432 - Dayton
- 45434 - Dayton
- 45440 - Dayton
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Greene Company-northwest Reg Water (OH2903512) on EPA.gov.
Frequently Asked Questions
Is Greene Company-northwest Reg Water water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Greene Company-northwest Reg Water serve?
Greene Company-northwest Reg Water serves approximately 41,895 people across 11 ZIP codes in Ohio.
Where does Greene Company-northwest Reg Water 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 →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Greene Company-northwest Reg Water (OH): 1 EPA Violation. https://zipcheckup.com/water-system/oh2903512/
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title = {{Greene Company-northwest Reg Water (OH): 1 EPA Violation}},
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url = {https://zipcheckup.com/water-system/oh2903512/}
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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
Greene Company-northwest Reg Water (EPA ID: OH2903512) - request the latest Consumer Confidence Report or ask about specific contaminants.