ZipCheckup grade for 48130: C.

A mixed picture - some signals here are worth your attention.

Your top priority: test this home for radon. Check your ZIP → EPA radon map

Water Quality Report
C 64

Dexter, MI (48130): 6 Violations Recorded for Mapped Water Systems - 64/100

EPA data combined for 3 water systems mapped to this ZIP (largest mapped system: Dexter)

PFAS Detected High County Radon Potential

EPA records for the water systems mapped to 48130 in Dexter, MI contain 6 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 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
C 64/100
Water Quality Concerns 6 non-health-based violation records in EPA data
Lead Risk Below action level Below the reporting limit, 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 EPA records for water systems mapped to this ZIP show 6 violations (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; 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
Violations on record (not health-based)
6 violations 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
C
ZIP-level Home Safety model score: 64 / 100
Bottom 23% of U.S. ZIP codes
3
Water Systems
4,500
People Served
0
Health Violations (since 2021)
Groundwater
Water Source
Zone 1
County Radon Potential · High
$453K
Median Home Value153% above state median ($179K)

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Score Breakdown

Overall Home Safety Score: 64/100

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
82/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
0/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
91/100
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) HIGH

Your Water System

ZIP code 48130 in Dexter, Michigan is mapped to the water system Dexter (EPA ID: MI0001810). This system provides water to approximately 4,500 people from groundwater sources.

There are 3 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
Dexter MI0001810 4,500 Groundwater
Loch Alpine Sanitary Authority MI0003940 1,506 Groundwater
Scio Township MI0005977 8,500 Surface water

Other Water Quality Reports in Michigan

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 Dexter (MI0001810) on EPA.gov.

4 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 48130.

Detected compounds: PFPeA, PFHpA, PFHxA.

Highest measured level: 0.0049 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 (6) OK
Cost & Community (9) MODERATE

CPSC product recall notices

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

View all recalls →

📊 CPSC · View source →

Frequently Asked Questions

Is the tap water in 48130 safe to drink?

EPA SDWIS records 6 violations since 2021 across the water systems mapped to ZIP 48130 (primary system: Dexter), 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 48130's water come from?

The recorded water source for Dexter, a system mapped to ZIP code 48130, is Groundwater. This system serves approximately 4,500 people.

How does Dexter water compare to the national average?

Dexter's Home Safety Score ranks lower than 77% of U.S. ZIP codes, and lower than 94% of ZIP codes within Michigan.

How can I get my water tested in Dexter?

If Dexter 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.

What is the radon risk for 48130?

48130 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Washtenaw 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 48130's water?

Yes, PFAS have been detected in samples from water systems mapped to 48130. 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). Dexter, MI (48130): 6 Violations Recorded for Mapped Water Systems - 64/100. https://zipcheckup.com/report/48130/
BibTeX 
@misc{zipcheckup-report-48130,
  author = {{ZipCheckup}},
  title  = {{Dexter, MI (48130): 6 Violations Recorded for Mapped Water Systems - 64/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/48130/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 48130

ZIP Code City, State Distance Grade Violations
48169 Pinckney, MI 7.0 mi N/A 1
48118 Chelsea, MI 7.3 mi C 0
48143 Lakeland, MI 7.6 mi N/A 0
48189 Whitmore Lake, MI 7.7 mi N/A 32
48139 Hamburg, MI 7.8 mi N/A 3
48106 Ann Arbor, MI 7.9 mi N/A 0
48107 Ann Arbor, MI 7.9 mi N/A 0
48113 Ann Arbor, MI 7.9 mi N/A 0
48103 Ann Arbor, MI 8.1 mi C 11
48109 Ann Arbor, MI 9.9 mi C 0

Contaminants Detected in 48130

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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Coverage: 13/17 risk factors Data sources →
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