DeSoto County, Mississippi
10 ZIP codes · Avg score 85/100 · Grade A · Updated 2026-06-03
DeSoto County earns a high water safety grade — 10 ZIP codes tracked, virtually all compliant.
How DeSoto County Compares
How DeSoto County Compares
DeSoto County scores 4 points above the Mississippi state average (81/100) and 17 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: DeSoto County, Mississippi
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13 (asthma 9.7%, diabetes 12.4%)
Estimated additional annual cost per homeowner: $721, driven primarily by flood
Infrastructure: 0.255% avg pipe failure probability
29.3% of homes built before 1978 (lead paint era)
Violation History (2021–2024)
→ Stable trendEPA violation counts by year across DeSoto County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 14 violations. Past 5 years: 22 total (22 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: $721
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
78,732 housing units in DeSoto 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 DeSoto County
Remediation costs are relatively manageable for most homeowners in DeSoto 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 DeSoto 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 DeSoto County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Days Water Association | 2,825 | 33 |
| 2 | City of Olive Branch | 54,025 | 31 |
| 3 | Nesbit Water Association | 5,734 | 29 |
| 4 | Country Haven Mobile Home Park | 829 | 28 |
| 5 | Lewisburg Water Association | 9,390 | 26 |
23 total water systems serve DeSoto County.
All ZIP Codes in DeSoto County
10 ZIP codes tracked in DeSoto County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 38611 | Byhalia | 94 | A | 7 (1 health) | $207K |
| 2 | 38632 | Hernando | 93 | A | 12 (2 health) | $287K |
| 3 | 38672 | Southaven | 93 | A | 1 | $291K |
| 4 | 38686 | Walls | 90 | A | 6 | — |
| 5 | 38651 | Nesbit | 88 | A | 11 (2 health) | $289K |
| 6 | 38680 | Walls | 86 | A | 6 | $193K |
| 7 | 38654 | Olive Branch | 83 | B | 7 (2 health) | $284K |
| 8 | 38671 | Southaven | 83 | B | 1 | $176K |
| 9 | 38637 | Horn Lake | 77 | B | 4 | $159K |
| 10 | 38641 | Lake Cormorant | 66 | C | 0 | $218K |
Recommended Buyer Guides for DeSoto County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- 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 DeSoto County, Mississippi
Overview
DeSoto County in Mississippi covers 10 ZIP codes with an average Home Safety Score of A (85/100).
9 of 10 ZIP codes have recorded EPA violations. 7 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.