Callaway County, Missouri
12 ZIP codes · Avg score 76/100 · Grade B · Updated 2026-06-03
In recent assessments, Callaway County's 12 ZIP codes record strong, consistent water safety outcomes.
How Callaway County Compares
How Callaway County Compares
Callaway County scores 7 points above the Missouri state average (69/100) and 8 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Callaway County, Missouri
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.8 (asthma 10.6%, diabetes 11.9%)
Estimated additional annual cost per homeowner: $666, driven primarily by flood
Infrastructure: 0.318% avg pipe failure probability, 20% of ZIPs at high risk
48.1% 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: $666
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
17,566 housing units in Callaway 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 Callaway County
Remediation costs are relatively manageable for most homeowners in Callaway 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 Callaway 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 Callaway County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | CALLAWAY 2 WATER DISTRICT | 13,080 | 21 |
| 2 | Callaway County Pwsd 1 | 9,840 | 16 |
| 3 | Boone County Cons Pwsd 1 | 24,700 | 10 |
| 4 | Boone County Pwsd 9 | 15,035 | 10 |
| 5 | Doolittle Mhp | 100 | 9 |
20 total water systems serve Callaway County.
All ZIP Codes in Callaway County
12 ZIP codes tracked in Callaway County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 65063 | New Bloomfield | 83 | B | 1 | $228K |
| 2 | 65102 | Jefferson City | 83 | B | 0 | — |
| 3 | 65105 | Jefferson City | 83 | B | 0 | — |
| 4 | 65299 | Columbia | 83 | B | 1 | — |
| 5 | 65231 | Auxvasse | 82 | B | 2 | $149K |
| 6 | 65262 | Kingdom City | 80 | B | 3 | $184K |
| 7 | 65043 | Holts Summit | 77 | B | 9 (1 health) | $210K |
| 8 | 65059 | Mokane | 77 | B | 2 | $233K |
| 9 | 65251 | Fulton | 76 | B | 4 | $172K |
| 10 | 63388 | Williamsburg | 63 | C | 0 | $68K |
| 11 | 65077 | Steedman | 63 | C | 0 | $203K |
| 12 | 65080 | Tebbetts | 63 | C | 0 | $310K |
Recommended Buyer Guides for Callaway County
Retailer arrangements don't shape what appears here — the selection logic is independent, filtered against EPA detections and the federal hazard data on file for this 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 Callaway County, Missouri
Overview
Callaway County in Missouri covers 12 ZIP codes with an average Home Safety Score of B (76/100).
7 of 12 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.