Grand Blanc, MI: Lead Above EPA Action Level - Home Safety 81/100
2 ZIP codes · 4 water systems · Updated
ZipCheckup grade for Grand Blanc: B.
This ZIP has a few items worth a quick check.
Across Grand Blanc, MI, the overall grade falls in the upper range - a summary score, not a measurement taken at any single tap.
How Grand Blanc Compares
Data: EPA SDWIS
Key Facts for Grand Blanc Residents
- Your city's water systems recorded 7 violations since 2021.
- Average of reported 90th-percentile lead results: 0.069 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average.
- Estimated remediation: $300 per household.
- Health risk index (ZipCheckup composite of CDC data): 14.95.
Grand Blanc's Water Providers
When a city is linked to 4 water systems, as Grand Blanc, MI is in federal records, water in one neighborhood may come from a different system than in another. The 3 systems with the largest reported populations are shown below, and their compliance records are kept separately, so a violation logged for one does not describe the others.
- B
- B
- B
Overview
We track home safety data for 2 ZIP codes in Grand Blanc, Michigan, covering 4 community water systems serving approximately 52,071 people. The EPA snapshots used for this build directly map water systems to 1 of 2 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Grand Blanc: B (81/100)
Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| PFAS MCL Screen | UCMR 5 testing against the covered federal MCLs |
| Radon Risk | EPA radon zone classification |
| Annual AQI | EPA AirData county-year median with at least 90 observed days |
Water Sources
Grand Blanc water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0690 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 1 of 1 ZIP code with known status exceed the EPA lead action level
Radon Risk
2 of 2 ZIP records with known zones are in EPA Radon Zone 2.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Rule | Reporting | 6 | 1 |
| Revised Total Coliform Rule | Microbiological | 4 | 1 |
| Nitrate | Inorganic | 2 | 1 |
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 48439 | B | 7 | 1 | City of Grand Blanc, |
All ZIP Codes in Grand Blanc
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
Grand Blanc Community Health Snapshot
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Grand Blanc's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Remediation Costs Compare in Grand Blanc
The remediation-to-value ratio for Grand Blanc sits at the bottom of the scale.
Estimated remediation costs in Grand Blanc can be compared with local home values. The $150–$600 estimated range can be set against the median property value; actual costs vary by home. Home values are 23% above the Michigan average.
Grand Blanc: Lead Risk & Vulnerable Populations
Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.
1 ZIP code (50% of the city's ZIP records) is served by a water system whose 90th-percentile lead result exceeds the EPA action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Grand Blanc: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Grand Blanc contains 61 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $6,853. Among ZIP codes with claim records, 100% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.
How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $300 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.
Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.
Deep Dive Reports
Detailed analysis for Grand Blanc, MI