Jefferson County, Mississippi
4 ZIP codes · Avg score 84/100 · Grade B · Updated 2026-06-03
Recent water monitoring in Jefferson County shows 4 ZIP codes with consistently safe results.
How Jefferson County Compares
How Jefferson County Compares
Jefferson County scores 3 points above the Mississippi state average (81/100) and 16 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 19.1 (asthma 11.2%, diabetes 23.6%)
Estimated additional annual cost per homeowner: $855, driven primarily by flood
Infrastructure: 0.403% avg pipe failure probability, 33% of ZIPs at high risk
56% of homes built before 1978 (lead paint era)
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: $855
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
3,417 housing units in Jefferson 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 Jefferson County
Remediation costs are relatively manageable for most homeowners in Jefferson 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 Jefferson 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 Jefferson County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Mcnair-stampley W/a #1 | 1,148 | 17 |
| 2 | Mcnair-stampley W/a #3 | 562 | 17 |
| 3 | Union Church Waterworks Assn | 1,456 | 17 |
| 4 | City of Fayette | 2,000 | 10 |
| 5 | Mcnair-stampley W/a #2 | 1,188 | 7 |
7 total water systems serve Jefferson County.
All ZIP Codes in Jefferson County
4 ZIP codes tracked in Jefferson County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 39668 | Union Church | 93 | A | 7 | $111K |
| 2 | 39069 | Fayette | 89 | A | 7 (1 health) | $74K |
| 3 | 39096 | Lorman | 79 | B | 3 | $92K |
| 4 | 39081 | Harriston | 73 | B | 0 | — |
Recommended Buyer Guides for Jefferson County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Lead Paint Test Kits — 56% of homes built before 1978
- Best Sump Pumps — Flood is the top compound risk factor
- Best Mold Test Kits — Flood-driven moisture and mold risk
Overview
Jefferson County in Mississippi covers 4 ZIP codes with an average Home Safety Score of B (84/100).
3 of 4 ZIP codes have recorded EPA violations. 1 health-based violation have been documented.
← Back to Mississippi 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.