Putnam County, Missouri
3 ZIP codes · Avg score 66/100 · Grade C · Updated 2026-06-03
Current EPA records place Putnam County in the middle tier for drinking water safety, with 3 ZIP codes showing a range of outcomes.
How Putnam County Compares
How Putnam County Compares
Putnam County scores 3 points below the Missouri state average (69/100) and 2 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
Key Risk Factors
Health risk index: 16.3 (asthma 10.8%, diabetes 15.1%)
Estimated additional annual cost per homeowner: $637, driven primarily by wildfire
Infrastructure: 0.44% avg pipe failure probability, 100% of ZIPs at high risk
75.5% 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: $637
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
2,496 housing units in Putnam 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 Putnam County
Remediation costs are relatively manageable for most homeowners in Putnam 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 Putnam 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 Putnam County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Putnam County Pwsd 1 | 2,997 | 8 |
| 2 | Unionville Public Water System | 1,735 | 8 |
| 3 | Lake Thunderhead | 585 | 8 |
| 4 | Pilot Knob Rural Water District 1 N & S | 839 | 0 |
| 5 | CENTERVILLE PWS | 190 | 0 |
All ZIP Codes in Putnam County
3 ZIP codes tracked in Putnam County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 63565 | Unionville | 81 | B | 8 (2 health) | $118K |
| 2 | 63625 | Black | 63 | C | 0 | $200K |
| 3 | 63666 | Reynolds | 53 | D | 0 | — |
Recommended Buyer Guides for Putnam County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Lead Paint Test Kits — 75.5% of homes built before 1978
- Best HEPA Air Purifiers for Wildfire Smoke — Wildfire is the top compound risk factor
Overview
Putnam County in Missouri covers 3 ZIP codes with an average Home Safety Score of C (66/100).
1 of 3 ZIP codes have recorded EPA violations. 2 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.