Water Quality Report

Gratis, OH (45330): High Radon Potential Area

EPA data for Southwest Regional Water District

PFAS Detected High County Radon Potential

EPA records for the water systems mapped to 45330 in Gratis, OH contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.

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 N/A
Water Quality No violations
Lead Risk Below action level 0.0013 mg/L, 90th percentile, sample period ending 2025-12-31
NFIP Claim History N/A
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water No drinking-water violations in EPA records since 2021.
  • Lead The reported 90th-percentile lead result of 0.0013 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
  • Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
Contaminant Summary
PFAS Detected
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 Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
1
Water System
42,856
People Served
0
Health Violations (since 2021)
Groundwater
Water Source
0.0013 mg/L
Reported Lead Result
Zone 1
County Radon Potential · High
$143K
Median Home Value15% below state median ($168K)

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Score Breakdown

Overall Home Safety Score: Score unavailable

Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.

Canonical components

EPA water compliance
100/100
Observed
PFAS MCL screen
Unknown
Evidence missing
EPA radon zone
0/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

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

Coverage: 3 of 4 components and 2 of 3 domains observed.

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

Safety & Health (8) HIGH

Your Water System

ZIP code 45330 in Gratis, Ohio is mapped to the water system Southwest Regional Water District (EPA ID: OH0903912). This system provides water to approximately 42,856 people from groundwater sources.

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 Southwest Regional Water District (OH0903912) 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 45330.

Detected compounds: PFBS.

Highest measured level: 0.0031 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 (10) MODERATE
Home & Infrastructure (7) MODERATE
Cost & Community (8) 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 Gratis

Based on local data for ZIP 45330, these services may benefit homeowners in your area.

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

Gutter Installation & Repair

The median home in 45330 was built around 1977. 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 Gratis is 1977; 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

Homes built around 1977 may be on their second or third roof. A professional inspection can catch damage before leaks start.

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 45330 safe to drink?

EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 45330 (primary system: Southwest Regional Water District), including 0 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 45330's water come from?

The recorded water source for Southwest Regional Water District, a system mapped to ZIP code 45330, is Groundwater. This system serves approximately 42,856 people.

How can I get my water tested in Gratis?

If Southwest Regional Water District 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 45330 tap water?

The Lead and Copper Rule record selected for 45330 reports a 90th-percentile lead result of 0.0013 mg/L for a water system mapped to this ZIP (record date 2025-12-31). 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 45330?

45330 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Preble 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 45330's water?

Yes, PFAS have been detected in samples from water systems mapped to 45330. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.

How to cite this page

APA ZipCheckup. (2026). Gratis, OH (45330): High Radon Potential Area. https://zipcheckup.com/report/45330/
BibTeX 
@misc{zipcheckup-report-45330,
  author = {{ZipCheckup}},
  title  = {{Gratis, OH (45330): High Radon Potential Area}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/45330/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 45330

ZIP Code City, State Distance Grade Violations
45070 West Elkton, OH 4.4 mi N/A 0
45311 Camden, OH 5.0 mi C 3
45381 West Alexandria, OH 5.4 mi C 2
45325 Farmersville, OH 6.3 mi C 4
45064 Somerville, OH 8.1 mi D 6
45327 Germantown, OH 8.2 mi C 3
45320 Eaton, OH 9.2 mi C 3
45345 New Lebanon, OH 9.5 mi C 7
45004 Collinsville, OH 10.2 mi N/A 0
45042 Middletown, OH 10.9 mi F 8

Contaminants Detected in 45330

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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Coverage: 15/17 risk factors Data sources →
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