Kosciusko County, Indiana
24 ZIP codes · Avg score 52/100 · Grade D · Updated 2026-06-03
Across Kosciusko County's 24 ZIP codes, EPA data shows a below-average compliance pattern — health-based violations are documented in several areas, and independent testing is a reasonable step for concerned households.
How Kosciusko County Compares
How Kosciusko County Compares
Kosciusko County scores 8 points below the Indiana state average (60/100) and 16 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Kosciusko County, Indiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.5 (asthma 11.1%, diabetes 13.2%)
Estimated additional annual cost per homeowner: $1,206, driven primarily by flood
Infrastructure: 0.413% avg pipe failure probability, 43% of ZIPs at high risk
64.7% of homes built before 1978 (lead paint era)
Violation History (2022–2025)
↑ Worsening trendEPA violation counts by year across Kosciusko County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 11 violations. Past 5 years: 20 total (20 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: $1,206
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
41,581 housing units in Kosciusko 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 Kosciusko County
Remediation costs are relatively manageable for most homeowners in Kosciusko 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 Kosciusko 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 Kosciusko County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Indiana American Water - Warsaw | 13,835 | 40 |
| 2 | Mecks Whispering Pines Ii Llc | 598 | 36 |
| 3 | Green Acres Mobile Home Park | 500 | 36 |
| 4 | Hideaway Hills | 470 | 36 |
| 5 | Westhaven Mhp Llc | 417 | 36 |
35 total water systems serve Kosciusko County.
All ZIP Codes in Kosciusko County
24 ZIP codes tracked in Kosciusko County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 46982 | Silver Lake | 70 | B | 1 | $175K |
| 2 | 46524 | Etna Green | 68 | C | 5 | $168K |
| 3 | 46590 | Winona Lake | 65 | C | 4 | $242K |
| 4 | 46555 | North Webster | 64 | C | 4 (1 health) | $204K |
| 5 | 46542 | Milford | 63 | C | 8 | $178K |
| 6 | 46539 | Mentone | 62 | C | 0 | $141K |
| 7 | 46510 | Claypool | 61 | C | 8 (3 health) | $202K |
| 8 | 46562 | Pierceton | 61 | C | 4 (1 health) | $186K |
| 9 | 46581 | Warsaw | 61 | C | 12 (3 health) | — |
| 10 | 46732 | Cromwell | 61 | C | 9 | $166K |
| 11 | 46567 | Syracuse | 60 | C | 4 | $228K |
| 12 | 46553 | New Paris | 53 | D | 0 | $246K |
| 13 | 46570 | Tippecanoe | 53 | D | 0 | $193K |
| 14 | 46580 | Warsaw | 51 | D | 12 (3 health) | $176K |
| 15 | 46582 | Warsaw | 51 | D | 12 (3 health) | $232K |
| 16 | 46502 | Atwood | 40 | D | 0 | — |
| 17 | 46508 | Burket | 40 | D | 0 | $113K |
| 18 | 46764 | Larwill | 40 | D | 0 | $227K |
| 19 | 46943 | Laketon | 40 | D | 0 | — |
| 20 | 46946 | Liberty Mills | 40 | D | 0 | — |
| 21 | 46980 | Servia | 40 | D | 0 | — |
| 22 | 47531 | Evanston | 40 | D | 0 | $258K |
| 23 | 47551 | Leopold | 40 | D | 0 | $188K |
| 24 | 46538 | Leesburg | 24 | F | 10 | $259K |
Recommended Buyer Guides for Kosciusko County
While many sites publish identical guide lists across every county they cover, the selection here changes by location — driven by the EPA, NSF, FEMA, and CDC datasets that describe the actual conditions documented for this jurisdiction in the federal record.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- Best Lead Paint Test Kits — 64.7% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
- Best Radon Test Kits — EPA Radon Zone 1 (highest risk) dominant in county
- Best Sump Pumps — Flood is the top compound risk factor
Deep Dive Reports
Detailed analysis for Kosciusko County, Indiana
Overview
Kosciusko County in Indiana covers 24 ZIP codes with an average Home Safety Score of D (52/100).
13 of 24 ZIP codes have recorded EPA violations. 14 health-based violations have been documented.
← Back to Indiana 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.
What You Can Do
Kosciusko County has a grade of D. Here are steps to protect your household.
Test your tap water
Order a certified lab test kit ($20-$50) to check for lead, bacteria, and other contaminants specific to your ZIP code.
Consider a certified water filter
NSF-certified filters can remove most common contaminants. Match the filter to your test results for best protection. Try our filter matcher
Contact your water utility
Request the latest Consumer Confidence Report (CCR) from your water provider. It details exactly what was found in your water supply.
Check for lead in your home
64.7% of homes in this county were built before 1978. Older plumbing and solder can leach lead into drinking water, especially in the morning.