Livingston County, Michigan
10 ZIP codes · Avg score 80/100 · Grade B · Updated 2026-06-04
Across Livingston County's 10 ZIP codes, EPA compliance data shows above-average performance — violation rates are minimal, none of the county's systems have triggered health-based MCL exceedances in recent cycles, and the county's scores have stayed above the national baseline across every recent reporting period.
How Livingston County Compares
How Livingston County Compares
Livingston County scores 6 points above the Michigan state average (74/100) and 12 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Livingston County, Michigan
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 12.2 (asthma 11%, diabetes 9.7%)
Estimated additional annual cost per homeowner: $707, driven primarily by flood
Infrastructure: 0.319% avg pipe failure probability
44.1% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Livingston County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 17 violations. Past 5 years: 24 total (24 health-based).
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
County Health Indicators vs National Average
Black markers indicate national averages. Source: CDC PLACES, Census ACS.
Infrastructure Overview
Sources: Census ACS (housing age), EPA SDWIS (infrastructure risk model), state bridge inspection data.
Compound Risk Breakdown
Estimated additional annual cost per homeowner: $707
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
76,705 housing units in Livingston County
Source: U.S. Census Bureau ACS B25034 (Year Structure Built).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Livingston County
Remediation costs are relatively manageable for most homeowners in Livingston County, representing a small fraction of property value.
Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.
Health Outcomes vs National Average
CDC PLACES data for Livingston County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water Systems with Most Violations
Top 5 systems in Livingston County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Howell, | 9,914 | 33 |
| 2 | Lake Chemung Outdoor Resort | 840 | 28 |
| 3 | Huntmore Estates | 290 | 28 |
| 4 | Austin Commons Ii | 280 | 28 |
| 5 | Eastern Michigan Nazarene District Cente | 250 | 28 |
29 total water systems serve Livingston County.
All ZIP Codes in Livingston County
10 ZIP codes tracked in Livingston County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 48114 | Brighton | 83 | B | 0 | $385K |
| 2 | 48353 | Hartland | 83 | B | 0 | $291K |
| 3 | 48178 | South Lyon | 82 | B | 3 | $392K |
| 4 | 48843 | Howell | 82 | B | 7 (1 health) | $323K |
| 5 | 48844 | Howell | 82 | B | 7 (1 health) | — |
| 6 | 48855 | Howell | 82 | B | 7 (1 health) | $317K |
| 7 | 48863 | Howell | 82 | B | 7 (1 health) | — |
| 8 | 48836 | Fowlerville | 78 | B | 5 | $263K |
| 9 | 48169 | Pinckney | 75 | B | 0 | $345K |
| 10 | 48116 | Brighton | 73 | B | 0 | $356K |
Recommended Buyer Guides for Livingston County
Strictly editorial — no paid placements influence which guides appear; the selection draws on NSF certifications and EPA detection records for water systems serving this county.
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Livingston County, Michigan
Overview
Livingston County in Michigan covers 10 ZIP codes with an average Home Safety Score of B (80/100).
6 of 10 ZIP codes have recorded EPA violations. 4 health-based violations have been documented.
← Back to Michigan water quality report
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Home values: U.S. Census Bureau ACS (median estimates by ZCTA)
Updated daily.