Mississippi County, Missouri
5 ZIP codes · Avg score 84/100 · Grade B · Updated 2026-06-03
Unlike many counties its size, Mississippi County keeps violation rates low — all 5 ZIP codes score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Mississippi County Compares
How Mississippi County Compares
Mississippi County scores 15 points above the Missouri state average (69/100) and 16 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Mississippi County, Missouri
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 17.5 (asthma 11.6%, diabetes 16.7%)
Estimated additional annual cost per homeowner: $1,364, driven primarily by flood
Infrastructure: 0.44% avg pipe failure probability, 50% of ZIPs at high risk
74% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Mississippi County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 4 violations. Past 5 years: 6 total (6 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: $1,364
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
4,863 housing units in Mississippi 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 Mississippi County
Water safety remediation is a moderate expense relative to home values. Most homeowners can address issues through staged improvements over time.
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 Mississippi 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 Mississippi County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Mississippi County Pwsd 1 | 3,000 | 20 |
| 2 | Anniston Public Water System | 175 | 16 |
| 3 | Wyatt Public Water System | 319 | 6 |
| 4 | East Prairie Public Water System | 2,964 | 3 |
| 5 | Charleston Public Water System | 5,900 | 1 |
7 total water systems serve Mississippi County.
All ZIP Codes in Mississippi County
5 ZIP codes tracked in Mississippi County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 63882 | Wyatt | 94 | A | 6 (1 health) | $46K |
| 2 | 63834 | Charleston | 90 | A | 1 | $107K |
| 3 | 63820 | Anniston | 88 | A | 16 (2 health) | $53K |
| 4 | 63845 | East Prairie | 84 | B | 3 | $94K |
| 5 | 63881 | Wolf Island | 66 | C | 0 | — |
Recommended Buyer Guides for Mississippi County
Editorial-only picks, screened against the EPA detections on file.
- Best Lead Paint Test Kits — 74% of homes built before 1978
- 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 Mississippi County, Missouri
Overview
Mississippi County in Missouri covers 5 ZIP codes with an average Home Safety Score of B (84/100).
4 of 5 ZIP codes have recorded EPA violations. 3 health-based violations have been documented.
← Back to Missouri 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.