ZipCheckup grade for 43031: D.

Federal records show several conditions worth reviewing.

Your top priority: see the breakdown below and consider a certified water filter. Check your ZIP → NSF certified filters

Health Violations Found
D 45

Johnstown, OH (43031): PFAS Detected in Mapped Water Systems - 45/100

EPA data combined for 4 water systems mapped to this ZIP (largest mapped system: Johnstown City Public Water System)

Health Violations Found PFAS Detected High County Radon Potential

Health-based violation records by water system:

EPA records for the water systems mapped to 43031 in Johnstown, OH contain 10 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 1 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
D 45/100
Water Quality PFAS above MCL 1 health-based violation
Lead Risk Below action level 0.002 mg/L, 90th percentile, sample period ending 2024-12-31
NFIP Claim History Claim records 4 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 1 health-based violation and 9 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result of 0.002 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
  • Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
  • Flood 4 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.
Contaminant Summary
Health Violations
10 violations 1 health-based PFAS detected
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record
D
ZIP-level Home Safety model score: 45 / 100
Bottom 4% of U.S. ZIP codes
4
Water Systems
5,200
People Served
1
Health Violations (since 2021)Median is 0
Groundwater
Water Source
0.002 mg/L
Reported Lead Result
Zone 1
County Radon Potential · High
$341K
Median Home Value104% above state median ($168K)

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Score Breakdown

Overall Home Safety Score: 45/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
72/100
Observed
PFAS MCL screen
0/100
Observed
EPA radon zone
0/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
36/100
Indoor environment
0/100
Outdoor environment
100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (7) CRITICAL

Your Water System

ZIP code 43031 in Johnstown, Ohio is mapped to the water system Johnstown City Public Water System (EPA ID: OH4501512). This system provides water to approximately 5,200 people from groundwater sources.

There are 4 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
Johnstown City Public Water System OH4501512 5,200 Groundwater
Del-Company Water Company, Inc. OH2101412 150,000 Surface water
Columbus Public Water System OH2504412 1,305,946 Surface water
Utica Village Public Water System OH4503012 2,235 Groundwater

Other Water Quality Reports in Ohio

Nearby Water Quality Reports

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.

5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.

📊 EPA Safe Drinking Water · View source →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 43031. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.

Detected compounds: PFHxA, PFBA, PFPeA, PFBS, PFOA, PFHpA.

Highest measured level: 0.0182 µg/L

Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.

📊 EPA UCMR5 · View source →
Environmental Hazards (11) MODERATE
Home & Infrastructure (7) OK
Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Johnstown

Based on local data for ZIP 43031, these services may benefit homeowners in your area.

Based on local data for your area. Use the tools below to explore your options.

Home & Flood Insurance

The ZIP code for this report in Johnstown has 4 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.

Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote

Check Your Flood Zone (Free)

FEMA flood map lookup - see if your property is in a flood zone

Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)

Gutter Installation & Repair

The median home in 43031 was built around 1982. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.

Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home

Estimate Your Home Maintenance Costs

Window Replacement

The median build year of homes in Johnstown is 1982; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.

Typical cost: Window replacement: typically $300–$800 per window installed

Estimate Your Home Maintenance Costs

Roofing Inspection & Repair

Active weather alerts in Ohio increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.

Frequently Asked Questions

Is the tap water in 43031 safe to drink?

EPA SDWIS records 10 violations since 2021 across the water systems mapped to ZIP 43031 (primary system: Johnstown City Public Water System), including 1 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.

Where does 43031's water come from?

The recorded water source for Johnstown City Public Water System, a system mapped to ZIP code 43031, is Groundwater. This system serves approximately 5,200 people.

How does Johnstown water compare to the national average?

Johnstown's Home Safety Score ranks lower than 96% of U.S. ZIP codes, and lower than 77% of ZIP codes within Ohio.

How can I get my water tested in Johnstown?

If Johnstown City Public Water System supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.

Is lead a concern in 43031 tap water?

The Lead and Copper Rule record selected for 43031 reports a 90th-percentile lead result of 0.002 mg/L for a water system mapped to this ZIP (record date 2024-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.

What is the radon risk for 43031?

43031 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Licking County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

Are there PFAS (forever chemicals) in 43031's water?

Yes, PFAS have been detected in samples from water systems mapped to 43031. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

What does the NFIP claim history show for ZIP 43031?

FEMA records contain 4 flood insurance claims filed in ZIP code 43031; the recorded rated-zone value (the most frequent one if there are several claims) is X, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Johnstown, OH (43031): PFAS Detected in Mapped Water Systems - 45/100. https://zipcheckup.com/report/43031/
BibTeX 
@misc{zipcheckup-report-43031,
  author = {{ZipCheckup}},
  title  = {{Johnstown, OH (43031): PFAS Detected in Mapped Water Systems - 45/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/43031/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 43031

ZIP Code City, State Distance Grade Violations
43001 Alexandria, OH 5.4 mi N/A 3
43013 Croton, OH 6.4 mi N/A 0
43054 New Albany, OH 6.8 mi D 1
43082 Westerville, OH 9.8 mi D 0
43011 Centerburg, OH 9.9 mi D 0
43062 Pataskala, OH 10.0 mi C 1
43021 Galena, OH 10.2 mi D 0
43004 Blacklick, OH 10.3 mi D 2
43023 Granville, OH 10.4 mi C 14
43073 Summit Station, OH 10.7 mi N/A 0

Contaminants Detected in 43031

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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