Walnut Hills Water Association
EPA ID: OH7005032 · 583 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Walnut Hills Water Association (OH7005032): 1 EPA violation in the last five years. Dating back across the full five-year EPA tracking window, Walnut Hills Water Association encountered 1 violation, each subsequently remedied and closed - today the utility meets all federal drinking water requirements for the 583 residents in its service area and holds no open enforcement actions.
Data: EPA SDWIS
Service Area Map
Coverage area for Walnut Hills Water Association Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Walnut Hills Water Association serves a community with a median household income of $61,458 and an estimated 14,057 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.
Environmental Justice Note: 50% 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?
Walnut Hills Water Association'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.
Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
Detected Contaminants
How Walnut Hills Water Association compares to EPA limits
What This Means For You
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
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
Walnut Hills Water Association (EPA ID: OH7005032) is a community water system in Ohio that serves approximately 583 people from groundwater sources.
This system serves ZIP code 44904 in Mansfield.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 0 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 2, 2024 | Surface Water Treatment Rule | Non-health-based | Resolved |
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 |
|---|---|---|
| 0.0027 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.
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.
- 44904 - Mansfield
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Walnut Hills Water Association (OH7005032) on EPA.gov.
Frequently Asked Questions
Is Walnut Hills Water Association water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Walnut Hills Water Association; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Walnut Hills Water Association serve?
Walnut Hills Water Association serves approximately 583 people across 1 ZIP code in Ohio.
Where does Walnut Hills Water Association get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Walnut Hills Water Association (OH): 1 EPA Violation. https://zipcheckup.com/water-system/oh7005032/
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author = {{ZipCheckup}},
title = {{Walnut Hills Water Association (OH): 1 EPA Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/oh7005032/}
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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
Walnut Hills Water Association (EPA ID: OH7005032) - request the latest Consumer Confidence Report or ask about specific contaminants.