Linn County, Kansas
6 ZIP codes · Avg score 76/100 · Grade B · Updated 2026-06-03
Throughout Linn County, the 6 monitored ZIP codes show low violation rates and healthy safety scores — a pattern that puts the county well above the state baseline for drinking water quality.
How Linn County Compares
How Linn County Compares
Linn County scores 12 points above the Kansas state average (64/100) and 8 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Linn County, Kansas
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.2 (asthma 10.2%, diabetes 12.5%)
Estimated additional annual cost per homeowner: $370, driven primarily by water_lead
Infrastructure: 0.39% avg pipe failure probability, 50% of ZIPs at high risk
57.2% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Linn County water systems. Health-based shown in red, total in blue.
Peak year: 2025 with 9 violations. Past 5 years: 22 total (22 health-based). Health-based violations are rising versus the prior 2-year window — worth closer monitoring.
Source: EPA SDWIS historical violations. Data may lag 6–12 months for the most recent year.
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: $370
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
3,232 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 Company Rwd 2 | 1,960 | 28 |
| 2 | Anderson Company Rwd 1c | 2,112 | 24 |
| 3 | Linn Company Rwd 3 | 710 | 24 |
| 4 | Bourbon Company Rwd 4 | 1,161 | 24 |
| 5 | City of Mound City, | 678 | 16 |
13 total water systems serve Linn County.
All ZIP Codes in Linn County
6 ZIP codes tracked in Linn County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 66010 | Blue Mound | 83 | B | 0 | $121K |
| 2 | 66072 | Parker | 83 | B | 0 | $240K |
| 3 | 66056 | Mound City | 80 | B | 16 (3 health) | $140K |
| 4 | 66767 | Prescott | 80 | B | 4 | — |
| 5 | 66075 | Pleasanton | 75 | B | 8 (2 health) | $138K |
| 6 | 66014 | Centerville | 53 | D | 0 | $333K |
Recommended Buyer Guides for Linn County
Methodologically, the recommendation order reflects severity in the federal record: contaminants flagged in EPA detection records for this county outrank generic water concerns, FEMA-confirmed hazard ratings shift emergency-related categories upward, and CDC lead-exposure markers govern when lead-test kits and certified filters appear at the top of the list.
- Best Lead Paint Test Kits — 57.2% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Linn County, Kansas
Overview
Linn County in Kansas covers 6 ZIP codes with an average Home Safety Score of B (76/100).
3 of 6 ZIP codes have recorded EPA violations. 5 health-based violations have been documented.
← Back to Kansas 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.