Johnstown City Public Water System
EPA ID: OH4501512 · 5,200 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Johnstown City Public Water System (OH4501512): 1 violation recorded with unresolved status in the SDWIS data used. Johnstown City Public Water System's EPA file includes 1 unresolved violation; the utility supplies water to approximately 5,200 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Johnstown City Public Water System Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: D
Demographics of ZIP Codes Served
The ZIP codes associated with Johnstown City Public Water System have a median household income of $109,652 and about 13,900 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 48% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Johnstown City Public Water System'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.
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. 6 detections recorded. 1 detection is 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
Johnstown City Public Water System (EPA ID: OH4501512) is a community water system in Ohio that serves approximately 5,200 people from groundwater sources.
This system serves ZIP code 43031 in Johnstown.
ZIP-Area Home Safety Context: D (45/100)
This is the average Home Safety Score for 1 of 1 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: 1 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 |
|---|---|---|---|
| November 20, 2025 | Consumer Confidence Rule | Non-health-based | Unaddressed (current) |
| July 2, 2025 | LEAD AND COPPER RULE REVISIONS | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | Monitoring & Reporting | 1 | No |
| Consumer Confidence Rule | Other (notice or report rule) | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.002 mg/L | No | 2024-12-31 |
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
1 of 1 ZIP records with known zones is 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.
- 43031 - Johnstown
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Johnstown City Public Water System (OH4501512) on EPA.gov.
Frequently Asked Questions
Is Johnstown City Public Water System 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 Johnstown City Public Water System serve?
Johnstown City Public Water System serves approximately 5,200 people across 1 ZIP code in Ohio.
Where does Johnstown City Public Water System get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
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.). Johnstown City Public Water System (OH): 2 EPA Violations. https://zipcheckup.com/water-system/oh4501512/
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title = {{Johnstown City Public Water System (OH): 2 EPA Violations}},
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url = {https://zipcheckup.com/water-system/oh4501512/}
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What You Can Do
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Contact your utility
Johnstown City Public Water System (EPA ID: OH4501512) - request the latest Consumer Confidence Report or ask about specific contaminants.