ZipCheckup grade for 48105: 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
Ann Arbor, MI (48105): PFAS Detected in Mapped Water Systems - 62/100
EPA data combined for 6 water systems mapped to this ZIP (largest mapped system: Ann Arbor)
Health-based violation records by water system:
EPA records for the water systems mapped to 48105 in Ann Arbor, MI contain 11 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
At a Glance
- Water EPA records for water systems mapped to this ZIP show 1 health-based violation and 10 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.0023 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.
- Flood 3 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.
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In safety data on file for 48105 in Ann Arbor, the high-priority tier holds 1 finding, with no critical-level conditions present.
Score Breakdown
Overall Home Safety Score: 62/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (8) CRITICAL
Your Water System
ZIP code 48105 in Ann Arbor, Michigan is mapped to the water system Ann Arbor (EPA ID: MI0000220). This system provides water to approximately 123,851 people from surface water sources.
There are 6 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Ann Arbor | MI0000220 | 123,851 | Surface water |
| Pittsfield Township | MI0005360 | 24,500 | Surface water |
| Sisters of Mary, Mother of Eucharist | MI0006074 | 100 | Groundwater |
| Superior Township | MI0006490 | 6,830 | Surface water |
| Loch Alpine Sanitary Authority | MI0003940 | 1,506 | Groundwater |
Other Water Quality Reports in Michigan
- 48001 (Algonac) - 2 violations recorded for mapped water systems
- 48002 (Allenton)
- 48003 (Almont) - 2 violations recorded for mapped water systems
- 48004 (Anchorville)
- 48005 (Armada) - 4 violations recorded for mapped water systems
- 48006 (Avoca)
- 48007 (Troy)
- 48009 (Birmingham) - 6 violations recorded for mapped water systems
- 48012 (Birmingham)
- 48014 (Capac) - 6 violations recorded for mapped water systems
- 48015 (Center Line)
- 48017 (Clawson) - 4 violations recorded for mapped water systems
- 48021 (Eastpointe) - 4 violations recorded for mapped water systems
- 48022 (Emmett)
- 48023 (Fair Haven)
- 48025 (Franklin) - 6 violations recorded for mapped water systems
- 48026 (Fraser) - 8 violations recorded for mapped water systems
- 48027 (Goodells)
- 48028 (Harsens Island)
- 48030 (Hazel Park)
Nearby Water Quality Reports
- 48109 (Ann Arbor) - 3 mi
- 48104 (Ann Arbor) - 3 mi
- 48103 (Ann Arbor) - 4 mi - 11 violations recorded for mapped water systems
- 48108 (Ann Arbor) - 5 mi - 5 violations recorded for mapped water systems
- 48197 (Ypsilanti) - 6 mi - 4 violations recorded for mapped water systems
- 48106 (Ann Arbor) - 8 mi
- 48107 (Ann Arbor) - 8 mi
- 48113 (Ann Arbor) - 8 mi
- 48198 (Ypsilanti) - 8 mi - 32 violations recorded for mapped water systems
- 48189 (Whitmore Lake) - 9 mi - 32 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Ann Arbor (MI0000220) 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.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 48105.
Detected compounds: PFBA, PFPeA, PFHpA, PFHxA.
Highest measured level: 0.0061 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.
Environmental Hazards (11) HIGH
Home & Infrastructure (6) MODERATE
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Ann Arbor
Based on local data for ZIP 48105, 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 Ann Arbor has 3 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 48105 was built around 1988. 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 CostsService 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 48105 safe to drink?
EPA SDWIS records 11 violations since 2021 across the water systems mapped to ZIP 48105 (primary system: Ann Arbor), 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 48105's water come from?
The recorded water source for Ann Arbor, a system mapped to ZIP code 48105, is Surface water. This system serves approximately 123,851 people.
How does Ann Arbor water compare to the national average?
Ann Arbor's Home Safety Score ranks lower than 80% of U.S. ZIP codes, and lower than 96% of ZIP codes within Michigan.
How can I get my water tested in Ann Arbor?
If Ann Arbor 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 48105 tap water?
The Lead and Copper Rule record selected for 48105 reports a 90th-percentile lead result of 0.0023 mg/L for a water system mapped to this ZIP (record date 2023-12-31). 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 48105?
48105 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 48105's water?
Yes, PFAS have been detected in samples from water systems mapped to 48105. 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 48105?
FEMA records contain 3 flood insurance claims filed in ZIP code 48105; 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
ZipCheckup. (2026). Ann Arbor, MI (48105): PFAS Detected in Mapped Water Systems - 62/100. https://zipcheckup.com/report/48105/
@misc{zipcheckup-report-48105,
author = {{ZipCheckup}},
title = {{Ann Arbor, MI (48105): PFAS Detected in Mapped Water Systems - 62/100}},
year = {2026},
url = {https://zipcheckup.com/report/48105/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 48105
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 48109 | Ann Arbor, MI | 2.5 mi | C | 0 |
| 48104 | Ann Arbor, MI | 2.6 mi | C | 0 |
| 48103 | Ann Arbor, MI | 4.3 mi | C | 11 |
| 48108 | Ann Arbor, MI | 4.9 mi | C | 5 |
| 48197 | Ypsilanti, MI | 6.2 mi | C | 4 |
| 48106 | Ann Arbor, MI | 7.5 mi | N/A | 0 |
| 48107 | Ann Arbor, MI | 7.5 mi | N/A | 0 |
| 48113 | Ann Arbor, MI | 7.5 mi | N/A | 0 |
| 48198 | Ypsilanti, MI | 7.6 mi | C | 32 |
| 48189 | Whitmore Lake, MI | 9.4 mi | N/A | 32 |
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