St. Francois County, Missouri
9 ZIP codes · Avg score 60/100 · Grade C · Updated 2026-07-19
ZipCheckup grade for St. Francois: C.
A mixed picture - some signals here are worth your attention.
Recent monitoring in St. Francois County's 9 ZIP codes shows middle-tier safety - some systems are clean; others have logged EPA violations.
How St. Francois County Compares
How St. Francois County Compares
St. Francois County scores 9 points below the Missouri state average (69/100) and 8 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-07-19
ZIP Code Risk Map
Water Quality Map: St. Francois County, Missouri
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.8 (asthma 10.7%, diabetes 12.6%)
Estimated additional annual cost per homeowner: $992, driven primarily by flood
Infrastructure: 0.464% avg pipe failure probability, 56% of ZIPs at high risk
63.1% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across St. Francois County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 31 violations. Past 5 years: 51 total (51 health-based). Health-based violations are rising versus the prior 2-year window - worth closer monitoring.
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: $992
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
28,469 housing units in St. Francois 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 St. Francois County
Remediation costs are relatively manageable for most homeowners in St. Francois 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 St. Francois County residents
Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.
Water systems serving St. Francois County
8 community water systems serving St. Francois County.
- D
- C
- D
- D
- C
- D
Show all 8 water systems
- C
- C
16 total water systems serve St. Francois County.
Systems with the most violations in St. Francois County
3 water systems with recorded EPA violations.
- D
- C
- C
All ZIP Codes in St. Francois County
9 ZIP codes tracked in St. Francois County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 63624 | Bismarck | 83 | B | 0 | $94K |
| 2 | 63640 | Farmington | 68 | C | 13 (6 health) | $196K |
| 3 | 63601 | Park Hills | 66 | C | 3 | $114K |
| 4 | 63653 | Leadwood | 58 | C | 8 (5 health) | $52K |
| 5 | 63087 | Valles Mines | 53 | D | 0 | $227K |
| 6 | 63365 | New Melle | 53 | D | 0 | — |
| 7 | 63628 | Bonne Terre | 53 | D | 0 | $171K |
| 8 | 63637 | Doe Run | 53 | D | 0 | $150K |
| 9 | 63651 | Knob Lick | 53 | D | 0 | — |
Recommended Buyer Guides for St. Francois County
Independent picks. EPA-grounded. Matched here.
- Best Lead Paint Test Kits — 63.1% 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 St. Francois County, Missouri
Overview
St. Francois County in Missouri covers 9 ZIP codes with an average Home Safety Score of C (60/100).
3 of 9 ZIP codes have recorded EPA violations. 11 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.