Pettis County, Missouri
7 ZIP codes · Avg score 80/100 · Grade B · Updated 2026-07-19
ZipCheckup grade for Pettis: B.
This ZIP looks solid, with a few items worth a quick check.
Within Pettis County's 7 tracked ZIP codes, safety indicators remain above the national average with few health-based violations on record.
How Pettis County Compares
How Pettis County Compares
Pettis County scores 11 points above the Missouri state average (69/100) and 12 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: Pettis County, Missouri
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.1 (asthma 10.7%, diabetes 12.6%)
Estimated additional annual cost per homeowner: $711, driven primarily by flood
Infrastructure: 0.421% avg pipe failure probability, 71% of ZIPs at high risk
60.6% 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: $711
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
20,175 housing units in Pettis 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 Pettis County
Remediation costs are relatively manageable for most homeowners in Pettis 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 Pettis County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving Pettis County
8 community water systems serving Pettis County.
- B
- B
- B
- B
- B
- B
Show all 8 water systems
- B
- B
17 total water systems serve Pettis County.
Systems with the most violations in Pettis County
2 water systems with recorded EPA violations.
- B
- B
All ZIP Codes in Pettis County
7 ZIP codes tracked in Pettis County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 65350 | Smithton | 83 | B | 0 | $124K |
| 2 | 65360 | Windsor | 83 | B | 0 | $123K |
| 3 | 65332 | Green Ridge | 82 | B | 3 (1 health) | $220K |
| 4 | 65334 | Hughesville | 80 | B | 2 | $173K |
| 5 | 65301 | Sedalia | 77 | B | 2 | $160K |
| 6 | 65337 | La Monte | 77 | B | 7 | $166K |
| 7 | 65333 | Houstonia | 76 | B | 1 | $116K |
Recommended Buyer Guides for Pettis County
Independent picks. EPA-grounded. Matched here.
- Best Lead Paint Test Kits — 60.6% 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
Deep Dive Reports
Detailed analysis for Pettis County, Missouri
Overview
Pettis County in Missouri covers 7 ZIP codes with an average Home Safety Score of B (80/100).
5 of 7 ZIP codes have recorded EPA violations. 1 health-based violation 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.