Marshall County, Mississippi
6 ZIP codes · Avg score 84/100 · Grade B · Updated 2026-06-03
Unlike many counties its size, Marshall County keeps violation rates low — all 6 ZIP codes score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Marshall County Compares
How Marshall County Compares
Marshall 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
ZIP Code Risk Map
Water Quality Map: Marshall County, Mississippi
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 16.8 (asthma 10.4%, diabetes 18.5%)
Estimated additional annual cost per homeowner: $170, driven primarily by flood
Infrastructure: 0.252% avg pipe failure probability
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across Marshall County water systems. Health-based shown in red, total in blue.
Peak year: 2021 with 3 violations. Past 5 years: 4 total (4 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: $170
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Marshall County
Remediation costs are relatively manageable for most homeowners in Marshall 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 Marshall 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 Marshall County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | City of Holly Springs | 9,779 | 6 |
| 2 | Town of Potts Camp | 1,085 | 5 |
| 3 | SOUTH VICTORIA | 143 | 5 |
| 4 | Town of Hickory Flat | 1,423 | 4 |
| 5 | Town of Potts Camp #2 | 390 | 4 |
7 total water systems serve Marshall County.
All ZIP Codes in Marshall County
6 ZIP codes tracked in Marshall County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 38634 | Holly Springs | 97 | A | 1 | — |
| 2 | 38659 | Potts Camp | 94 | A | 4 (1 health) | $83K |
| 3 | 38635 | Holly Springs | 93 | A | 1 | $159K |
| 4 | 38679 | Victoria | 90 | A | 5 (1 health) | — |
| 5 | 38649 | Mount Pleasant | 66 | C | 0 | — |
| 6 | 38661 | Red Banks | 66 | C | 0 | $210K |
Recommended Buyer Guides for Marshall County
Eight risk categories drive the selection — PFAS exceedance, lead above EPA action level, pre-1978 housing share, EPA Radon Zone 1, flood-top-risk, wildfire-top-risk, multi-contaminant load, and a baseline fallback — and each category maps to a specific buyer-guide track that surfaces when the county data hits its threshold for that hazard signal.
- 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 Marshall County, Mississippi
Overview
Marshall County in Mississippi covers 6 ZIP codes with an average Home Safety Score of B (84/100).
4 of 6 ZIP codes have recorded EPA violations. 2 health-based violations 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.