Tri-county Water Authority
EPA ID: OH3401403 · 2,370 people served · 7 ZIP codes
ZipCheckup's reading of EPA records for Tri-county Water Authority (OH3401403): 2 violations on record since 2021. Per the federal file, all 2 violations logged for Tri-county Water Authority carry a resolved status, and around 2,370 people get water from this system.
Data: EPA SDWIS
Service Area Map
Coverage area for Tri-county Water Authority Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: C
Demographics of ZIP Codes Served
The ZIP codes associated with Tri-county Water Authority have a median household income of $60,702 and about 40,457 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 83% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 49% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). 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?
Tri-county Water Authority's water is classified in EPA records as a groundwater source. 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 70th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 5 detections recorded. 3 detections are above the level of a federal PFAS MCL (4 ppt for PFOA and PFOS), with compliance required from 2029.
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
Tri-county Water Authority (EPA ID: OH3401403) is a community water system in Ohio that serves approximately 2,370 people from groundwater sources.
This system provides water to 7 ZIP codes across 7 communities.
ZIP-Area Home Safety Context: C (60/100)
This is the average Home Safety Score for 1 of 7 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: 2 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 |
|---|---|---|---|
| December 20, 2023 | Public Notice | Non-health-based | Resolved |
| November 1, 2022 | Revised Total Coliform 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 |
|---|---|---|---|
| Public Notice | Other (notice or report rule) | 1 | No |
| Revised Total Coliform Rule | Monitoring & Reporting | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0021 mg/L | No | 2025-12-31 |
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
7 of 7 ZIP records with known zones are in EPA Radon Zone 1.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
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.
- 43901 - Adena
- 43905 - Barton
- 43907 - Cadiz
- 43912 - Bridgeport
- 43917 - Dillonvale
- 43935 - Martins Ferry
- 43950 - Saint Clairsville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Tri-county Water Authority (OH3401403) on EPA.gov.
Frequently Asked Questions
Is Tri-county Water Authority water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Tri-county Water Authority; its 2 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Tri-county Water Authority serve?
Tri-county Water Authority serves approximately 2,370 people across 7 ZIP codes in Ohio.
Where does Tri-county Water Authority get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Tri-county Water Authority (OH): 2 EPA Violations. https://zipcheckup.com/water-system/oh3401403/
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author = {{ZipCheckup}},
title = {{Tri-county Water Authority (OH): 2 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/oh3401403/}
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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
Tri-county Water Authority (EPA ID: OH3401403) - request the latest Consumer Confidence Report or ask about specific contaminants.