Osage County, Missouri
13 ZIP codes · Avg score 70/100 · Grade B · Updated 2026-06-03
Osage County's tap water quality puts it in the upper tier nationally; the 13 ZIP codes here record few health-based violations.
How Osage County Compares
How Osage County Compares
Osage County scores 1 points above the Missouri state average (69/100) and 2 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Osage County, Missouri
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.6 (asthma 10.4%, diabetes 11.4%)
Estimated additional annual cost per homeowner: $964, driven primarily by flood
Infrastructure: 0.391% avg pipe failure probability, 38% of ZIPs at high risk
64.3% 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: $964
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
9,141 housing units in Osage 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 Osage County
Remediation costs are relatively manageable for most homeowners in Osage 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 Osage 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 Osage County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Osage Company Pwsd 1 | 1,221 | 16 |
| 2 | Osage County Pwsd 4 | 357 | 15 |
| 3 | Osage County Pwsd 3 | 2,800 | 14 |
| 4 | Linn Public Water System | 1,500 | 10 |
| 5 | Belle Public Water System | 1,545 | 9 |
16 total water systems serve Osage County.
All ZIP Codes in Osage County
13 ZIP codes tracked in Osage County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 65054 | Loose Creek | 83 | B | 1 | $214K |
| 2 | 65001 | Argyle | 81 | B | 5 | $188K |
| 3 | 65035 | Freeburg | 79 | B | 6 | $213K |
| 4 | 65014 | Bland | 78 | B | 1 | $134K |
| 5 | 65016 | Bonnots Mill | 76 | B | 1 | $231K |
| 6 | 65013 | Belle | 72 | B | 9 | $196K |
| 7 | 65085 | Westphalia | 72 | B | 4 | $257K |
| 8 | 65051 | Linn | 70 | B | 10 | $178K |
| 9 | 65024 | Chamois | 68 | C | 4 (1 health) | $121K |
| 10 | 65067 | Portland | 63 | C | 0 | $126K |
| 11 | 65076 | Saint Thomas | 63 | C | 0 | $185K |
| 12 | 65048 | Koeltztown | 53 | D | 0 | $342K |
| 13 | 65075 | Saint Elizabeth | 53 | D | 0 | $264K |
Recommended Buyer Guides for Osage County
Where county records show a lead exceedance or pre-1978 housing concentration, lead-specific filters and test kits move toward the top of the list.
- Best Lead Paint Test Kits — 64.3% 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 Osage County, Missouri
Overview
Osage County in Missouri covers 13 ZIP codes with an average Home Safety Score of B (70/100).
9 of 13 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.