Andrew County, Missouri
11 ZIP codes · Avg score 54/100 · Grade D · Updated 2026-06-03
Public water compliance in Andrew County is below average — 11 ZIP codes, elevated violation rates.
How Andrew County Compares
How Andrew County Compares
Andrew County scores 15 points below the Missouri state average (69/100) and 14 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Andrew County, Missouri
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.2 (asthma 10.5%, diabetes 12.1%)
Estimated additional annual cost per homeowner: $1,135, driven primarily by flood
Infrastructure: 0.406% avg pipe failure probability, 40% of ZIPs at high risk
67.5% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Andrew County water systems. Health-based shown in red, total in blue.
Peak year: 2023 with 1 violation. Past 5 years: 3 total (3 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: $1,135
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
26,347 housing units in Andrew 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 Andrew County
Remediation costs are relatively manageable for most homeowners in Andrew 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 Andrew 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 Andrew County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Andrew County Pwsd 3 | 1,178 | 17 |
| 2 | Andrew County Pwsd 2 | 3,580 | 14 |
| 3 | ANDREW COUNTY PWSD 4 | 600 | 14 |
| 4 | Rosendale Public Water System | 142 | 10 |
| 5 | Andrew County Pwsd 1 | 6,042 | 7 |
11 total water systems serve Andrew County.
All ZIP Codes in Andrew County
11 ZIP codes tracked in Andrew County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 64449 | Fillmore | 69 | C | 2 (1 health) | $103K |
| 2 | 64485 | Savannah | 68 | C | 4 | $189K |
| 3 | 64436 | Cosby | 66 | C | 0 | $268K |
| 4 | 64483 | Rosendale | 63 | C | 10 (2 health) | $185K |
| 5 | 64421 | Amazonia | 58 | C | 1 | $90K |
| 6 | 64502 | Saint Joseph | 53 | D | 0 | — |
| 7 | 64427 | Bolckow | 47 | D | 0 | $177K |
| 8 | 64501 | Saint Joseph | 45 | D | 0 | $97K |
| 9 | 64506 | Saint Joseph | 45 | D | 0 | $221K |
| 10 | 64480 | Rea | 40 | D | 0 | $188K |
| 11 | 64505 | Saint Joseph | 40 | D | 0 | $186K |
Recommended Buyer Guides for Andrew County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Lead Paint Test Kits — 67.5% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- 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 Andrew County, Missouri
Overview
Andrew County in Missouri covers 11 ZIP codes with an average Home Safety Score of D (54/100).
4 of 11 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.
What You Can Do
Andrew County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
67.5% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.