CITY REPORT MI HEALTH VIOLATIONS: 2

Flat Rock, MI: 2 Health Violations - Home Safety 90/100

1 ZIP code · 5 water systems · Updated

ZipCheckup grade for Flat Rock: A.

Checked records flag no major concern; missing data is unknown.

Tap water system records for Flat Rock, MI support a high grade on this site; review your own system's entries for specifics.

How Flat Rock Compares

Flat Rock90/100
Michigan avg85/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
5
Water Systems
1
ZIPs Linked to Systems with Violations
A · 90
Avg Safety Score
Zone 3
County Radon Potential (Low)
$253K
Median Home Value
$300
Est. Remediation (0.1% of home value)

Flat Rock Water: The Quick Version

  • Your city's water systems recorded 9 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0076 mg/L.
  • Homes built before 1986: 37% - older plumbing may contain lead solder.
  • Estimated remediation: $300 per household.
  • Health risk index (ZipCheckup composite of CDC data): 14.63.

Water Systems Serving Flat Rock

The 3 largest of 5 systems connected with Flat Rock, MI are listed below.

Overview

We track home safety data for 1 ZIP code in Flat Rock, Michigan (population ~24,472), covering 5 community water systems serving approximately 75,207 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 2 health-based violations appear in the available health breakdown.

Home Safety Score

Average Home Safety Score for Flat Rock: A (90/100)

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

Flat Rock water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0076 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 3.

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
Haloacetic Acids (HAA5) Disinfection Byproducts 6 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 6 1
Surface Water Treatment Rule Treatment Technique 4 1
Lead and Copper Rule Treatment Technique 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
48134 A 9 2 Flat Rock

All ZIP Codes in Flat Rock

  • 48134 [A] - 9 violations ⚠

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

CDC Health Data for Flat Rock

12.3%
Asthma (US: 9.8%)
14.3%
Diabetes (US: 10.4%)
19.7%
Poor Mental Health (US: 14.8%)

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

Asthma 12.3% ↑
Diabetes 14.3% ↑
Mental Health 19.7% ↑

Vertical line = national average. ■ Above national · ■ Below national

Key Contaminants Detected in Flat Rock

Haloacetic Acids (HAA5) 6 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.06 mg/L
Increased cancer risk with long-term exposure above the MCL
Total Trihalomethanes (TTHM) 6 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.08 mg/L
Increased cancer risk with long-term exposure above the MCL
Surface Water Treatment Rule 4 violations
Treatment Technique
Pathogens may not be adequately removed

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

How Old Is Flat Rock's Housing Stock?

1995
Median Build Year
37%
Built Before 1986
22%
Built Before 1970
Copper
Likely Pipe Material

Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

For a household in Flat Rock, a certified lab test of tap water answers what the median build year of 1995 cannot.

1995
Median Year Built
37%
Pre-1986 (lead solder era; lead paint banned 1978)
22%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (22%) 1970–1986 (15%) Post-1986 (63%)

Most homes in Flat Rock were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Flat Rock: Remediation Cost in Perspective

How large is the remediation estimate next to home prices in Flat Rock? Small in relative terms: it amounts to 1% of the median value or less, although the dollar figure below is still an estimate and actual costs vary by property and contractor.

Median Home Value
$252,500
Est. Remediation
$300
Remediation as % of home value 0.1%

Estimated remediation costs in Flat Rock 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 24% above the Michigan average.

Protecting Children from Lead in Flat Rock

37%
Homes Built Before 1986
0.0076
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

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.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Historical Flood-Claim Evidence for Flat Rock

30
Total FEMA Flood Claims
$4,385
Avg Reported Sum With Payment Data
100%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Flat Rock contains 30 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $4,385. 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.

Frequently Asked Questions

What does the Home Safety Score mean for Flat Rock, MI?
Flat Rock has an average Home Safety Score of 90/100 (Grade A) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 9 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Flat Rock?
EPA records list 9 EPA violations, including 2 health-based violations for Flat Rock water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Flat Rock water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Flat Rock is 0.0076 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Flat Rock compare to Michigan average?
Flat Rock has an average Home Safety Score of 90/100, which is at or above the Michigan state average of 85/100 for the same model series.
How many water systems serve Flat Rock?
Our records map 5 water systems to 1 ZIP code in Flat Rock. The related population figure in our data is approximately 24,472 people; it is not a count of people served citywide.
How much does it cost to fix water issues in Flat Rock?
Estimated remediation cost per household in Flat Rock: $300; modeled range $150 to $600. Estimated costs may include filtration, pipe replacement, radon mitigation, or flood protection where applicable.
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How to cite this page

APA ZipCheckup. (2026). Flat Rock, MI: 2 Health Violations - Home Safety 90/100. https://zipcheckup.com/cities/mi/flat-rock/
BibTeX
@misc{zipcheckup-cities-mi-flat-rock,
  author = {{ZipCheckup}},
  title  = {{Flat Rock, MI: 2 Health Violations - Home Safety 90/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/mi/flat-rock/}
}

Page version: October 2026.

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