ZipCheckup grade for 48079: A.
Checked records flag no major concern; missing data is unknown.
Saint Clair, MI (48079): 1 Health-Based Violation Recorded for Mapped Water Systems - 98/100
EPA data combined for 4 water systems mapped to this ZIP (largest mapped system: City of St. Clair)
Health-based violation records by water system:
EPA records for the water systems mapped to 48079 in Saint Clair, MI contain 5 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 4 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.
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
- Flood 11 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.
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Score Breakdown
Overall Home Safety Score: 98/100
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 (5) CRITICAL
Your Water System
ZIP code 48079 in Saint Clair, Michigan is mapped to the water system City of St. Clair (EPA ID: MI0006270). This system provides water to approximately 5,464 people from surface water sources.
There are 4 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| City of St. Clair, | MI0006270 | 5,464 | Surface water |
| City of Marysville, | MI0004160 | 9,959 | Surface water |
| St. Clair Township | MI0006282 | 3,270 | Surface water |
| St. Clair Water and Sewer Authority | MI0006284 | 5,847 | Surface water |
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
- 48054 (East China) - 4 mi - 7 violations recorded for mapped water systems
- 48074 (Smiths Creek) - 6 mi - 14 violations recorded for mapped water systems
- 48040 (Marysville) - 6 mi
- 48004 (Anchorville) - 8 mi
- 48063 (Columbus) - 9 mi
- 48064 (Casco) - 9 mi
- 48039 (Marine City) - 10 mi - 4 violations recorded for mapped water systems
- 48061 (Port Huron) - 11 mi
- 48023 (Fair Haven) - 12 mi
- 48060 (Port Huron) - 12 mi - 3 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 City of St. Clair (MI0006270) 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.
UCMR 5 PFAS monitoring: no reportable detections in available records
Available federal UCMR5 records for water systems mapped to ZIP code 48079 show no PFAS detections among the compounds tested, at the program's reporting levels.
The EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR5) required community and non-transient non-community water systems serving 3,300 or more people to test for 29 PFAS compounds and lithium between 2023 and 2025. Systems with no detections at the federal minimum reporting level had no results at or above that reporting level.
Environmental Hazards (11) HIGH
Home & Infrastructure (6) OK
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 Saint Clair
Based on local data for ZIP 48079, 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 Saint Clair has 11 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 48079 was built around 1972. 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 CostsWindow Replacement
The median build year of homes in Saint Clair is 1972; 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 CostsRoofing Inspection & Repair
Homes built around 1972 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 NeedsService 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 48079 safe to drink?
EPA SDWIS records 5 violations since 2021 across the water systems mapped to ZIP 48079 (primary system: City of St. Clair), 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 48079's water come from?
The recorded water source for City of St. Clair, a system mapped to ZIP code 48079, is Surface water. This system serves approximately 5,464 people.
How does Saint Clair water compare to the national average?
Saint Clair's Home Safety Score ranks better than 89% of U.S. ZIP codes, and at or above 81% within Michigan.
How can I get my water tested in Saint Clair?
If City of St. Clair 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 48079 tap water?
The Lead and Copper Rule record selected for 48079 reports a 90th-percentile lead result of 0.002 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 48079?
48079 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in St. Clair County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
What does the NFIP claim history show for ZIP 48079?
FEMA records contain 11 flood insurance claims filed in ZIP code 48079; the recorded rated-zone value (the most frequent one if there are several claims) is A02, 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). Saint Clair, MI (48079): 1 Health-Based Violation Recorded for Mapped Water Systems - 98/100. https://zipcheckup.com/report/48079/
@misc{zipcheckup-report-48079,
author = {{ZipCheckup}},
title = {{Saint Clair, MI (48079): 1 Health-Based Violation Recorded for Mapped Water Systems - 98/100}},
year = {2026},
url = {https://zipcheckup.com/report/48079/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 48079
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 48054 | East China, MI | 3.7 mi | B | 7 |
| 48074 | Smiths Creek, MI | 6.2 mi | A | 14 |
| 48040 | Marysville, MI | 6.3 mi | A | 0 |
| 48004 | Anchorville, MI | 7.7 mi | N/A | 0 |
| 48063 | Columbus, MI | 9.0 mi | N/A | 0 |
| 48064 | Casco, MI | 9.0 mi | N/A | 0 |
| 48039 | Marine City, MI | 9.8 mi | A | 4 |
| 48061 | Port Huron, MI | 11.0 mi | N/A | 0 |
| 48023 | Fair Haven, MI | 11.6 mi | A | 0 |
| 48060 | Port Huron, MI | 12.1 mi | A | 3 |
Nearby ZIP Code Reports
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ZIP 48079 scores in the top tier nationally.