Linn County, Missouri
10 ZIP codes · Avg score 74/100 · Grade B · Updated 2026-06-03
Covering 10 ZIP codes, Linn County earns a high grade for tap water — most systems report zero health-based violations, and the overall compliance rate comfortably exceeds federal benchmarks.
How Linn County Compares
How Linn County Compares
Linn County scores 5 points above the Missouri state average (69/100) and 6 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Linn County, Missouri
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.1 (asthma 10.7%, diabetes 13.7%)
Estimated additional annual cost per homeowner: $594, driven primarily by energy_code_gap
Infrastructure: 0.415% avg pipe failure probability, 50% of ZIPs at high risk
72.5% 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: $594
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
6,492 housing units in Linn 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 Linn County
Remediation costs are relatively manageable for most homeowners in Linn 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 Linn 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 Linn County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Linn County Cons Pwsd 1 | 1,420 | 20 |
| 2 | Chariton Linn County Pwsd 3 | 5,913 | 12 |
| 3 | Linn Livingston County Pwsd 3 | 1,350 | 8 |
| 4 | Brookfield Public Water System | 4,111 | 7 |
| 5 | Laclede Public Water System | 345 | 7 |
15 total water systems serve Linn County.
All ZIP Codes in Linn County
10 ZIP codes tracked in Linn County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 64630 | Browning | 83 | B | 0 | $125K |
| 2 | 64653 | Linneus | 83 | B | 0 | $119K |
| 3 | 64658 | Marceline | 83 | B | 0 | $114K |
| 4 | 64674 | Purdin | 80 | B | 3 | $103K |
| 5 | 64631 | Bucklin | 79 | B | 5 | $115K |
| 6 | 64628 | Brookfield | 78 | B | 0 | $116K |
| 7 | 64659 | Meadville | 78 | B | 5 | $131K |
| 8 | 64651 | Laclede | 67 | C | 7 | — |
| 9 | 63557 | New Boston | 53 | D | 0 | $259K |
| 10 | 63566 | Winigan | 53 | D | 0 | $104K |
Recommended Buyer Guides for Linn 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 — 72.5% of homes built before 1978
Deep Dive Reports
Detailed analysis for Linn County, Missouri
Overview
Linn County in Missouri covers 10 ZIP codes with an average Home Safety Score of B (74/100).
4 of 10 ZIP codes have recorded EPA violations. All violations are monitoring/reporting type.
← 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.