Newton County, Missouri
9 ZIP codes · Avg score 76/100 · Grade B · Updated 2026-06-03
EPA monitoring reports for Newton County cover 9 ZIP codes and tell a largely reassuring story — compliance rates are high and health-based violations are far below the national norm.
How Newton County Compares
How Newton County Compares
Newton 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: Newton 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 13.4%)
Estimated additional annual cost per homeowner: $928, driven primarily by flood
Infrastructure: 0.349% avg pipe failure probability, 25% of ZIPs at high risk
53.1% 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: $928
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
32,514 housing units in Newton 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 Newton County
Remediation costs are relatively manageable for most homeowners in Newton 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 Newton 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 Newton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Newton Company Pwsd 1 | 450 | 34 |
| 2 | Boondocks Enterprises Llc | 35 | 32 |
| 3 | Mo American Joplin | 73,728 | 28 |
| 4 | Granby Public Water System | 2,034 | 23 |
| 5 | SENECA PWS | 2,390 | 22 |
19 total water systems serve Newton County.
All ZIP Codes in Newton County
9 ZIP codes tracked in Newton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 64840 | Diamond | 83 | B | 0 | $215K |
| 2 | 64853 | Newtonia | 83 | B | 0 | — |
| 3 | 64866 | Stark City | 83 | B | 0 | $123K |
| 4 | 64865 | Seneca | 78 | B | 1 | $189K |
| 5 | 64844 | Granby | 77 | B | 2 | $116K |
| 6 | 64842 | Fairview | 75 | B | 11 | $166K |
| 7 | 64850 | Neosho | 72 | B | 21 (1 health) | $162K |
| 8 | 64804 | Joplin | 71 | B | 6 (2 health) | $172K |
| 9 | 64858 | Racine | 63 | C | 0 | $266K |
Recommended Buyer Guides for Newton County
Below: editorial picks, no sponsored placements.
- Best Lead Paint Test Kits — 53.1% 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 Newton County, Missouri
Overview
Newton County in Missouri covers 9 ZIP codes with an average Home Safety Score of B (76/100).
5 of 9 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.