Allen County, Indiana
56 ZIP codes · Avg score 63/100 · Grade C · Updated 2026-06-03
Water monitoring across Allen County's 56 ZIP codes paints a mid-range picture — solid compliance in some zones, documented concerns in others; most violations on record are concentrated in specific prior years rather than spread evenly across the full compliance history, and the overall county grade has held steady in the middle tier without major shifts in either direction.
How Allen County Compares
How Allen County Compares
Allen County scores 3 points above the Indiana state average (60/100) and 5 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Allen County, Indiana
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.5 (asthma 11.2%, diabetes 12.9%)
Estimated additional annual cost per homeowner: $1,167, driven primarily by flood
Infrastructure: 0.354% avg pipe failure probability, 21% of ZIPs at high risk
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Allen County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 48 violations. Past 5 years: 54 total (54 health-based).
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: $1,167
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Water Safety Affordability
How much it costs to fix water issues relative to home values in Allen County
Remediation costs are relatively manageable for most homeowners in Allen 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 Allen 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 Allen County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | FORT WAYNE - 3 RIVERS FILTRATION PLANT | 269,994 | 571 |
| 2 | Huntertown Water Works | 14,058 | 560 |
| 3 | Sunnymede Community Association Water | 473 | 559 |
| 4 | Country Court Estates | 362 | 559 |
| 5 | Mill Road Estates | 150 | 559 |
18 total water systems serve Allen County.
All ZIP Codes in Allen County
56 ZIP codes tracked in Allen County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 46748 | Huntertown | 70 | B | 1 | $258K |
| 2 | 46797 | Woodburn | 70 | B | 1 | $223K |
| 3 | 46801 | Fort Wayne | 69 | C | 13 (1 health) | — |
| 4 | 46814 | Fort Wayne | 69 | C | 13 (1 health) | $383K |
| 5 | 46818 | Fort Wayne | 69 | C | 13 (1 health) | $221K |
| 6 | 46845 | Fort Wayne | 69 | C | 13 (1 health) | $314K |
| 7 | 46895 | Fort Wayne | 69 | C | 13 (1 health) | — |
| 8 | 46898 | Fort Wayne | 69 | C | 13 (1 health) | — |
| 9 | 46743 | Harlan | 68 | C | 4 | $187K |
| 10 | 46773 | Monroeville | 68 | C | 2 | $167K |
| 11 | 46765 | Leo | 66 | C | 5 | $282K |
| 12 | 46850 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 13 | 46851 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 14 | 46852 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 15 | 46853 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 16 | 46854 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 17 | 46855 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 18 | 46856 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 19 | 46857 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 20 | 46858 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 21 | 46859 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 22 | 46860 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 23 | 46861 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 24 | 46862 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 25 | 46863 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 26 | 46864 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 27 | 46865 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 28 | 46866 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 29 | 46867 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 30 | 46868 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 31 | 46869 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 32 | 46885 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 33 | 46896 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 34 | 46897 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 35 | 46899 | Fort Wayne | 65 | C | 13 (1 health) | — |
| 36 | 46783 | Roanoke | 64 | C | 3 | $283K |
| 37 | 46804 | Fort Wayne | 64 | C | 13 (1 health) | $241K |
| 38 | 46806 | Fort Wayne | 64 | C | 13 (1 health) | $78K |
| 39 | 46815 | Fort Wayne | 64 | C | 13 (1 health) | $187K |
| 40 | 46816 | Fort Wayne | 64 | C | 13 (1 health) | $129K |
| 41 | 46819 | Fort Wayne | 64 | C | 13 (1 health) | $157K |
| 42 | 46825 | Fort Wayne | 64 | C | 13 (1 health) | $202K |
| 43 | 46835 | Fort Wayne | 64 | C | 13 (1 health) | $194K |
| 44 | 46774 | New Haven | 62 | C | 3 | $169K |
| 45 | 46803 | Fort Wayne | 59 | C | 13 (1 health) | $79K |
| 46 | 46807 | Fort Wayne | 59 | C | 13 (1 health) | $134K |
| 47 | 46808 | Fort Wayne | 59 | C | 13 (1 health) | $128K |
| 48 | 46799 | Zanesville | 56 | C | 7 (2 health) | $156K |
| 49 | 46802 | Fort Wayne | 54 | D | 13 (1 health) | $132K |
| 50 | 46805 | Fort Wayne | 54 | D | 13 (1 health) | $131K |
| 51 | 46809 | Fort Wayne | 54 | D | 13 (1 health) | $123K |
| 52 | 46745 | Hoagland | 53 | D | 0 | $234K |
| 53 | 46763 | Laotto | 53 | D | 0 | $261K |
| 54 | 46788 | Spencerville | 53 | D | 0 | $234K |
| 55 | 46704 | Arcola | 40 | D | 0 | $77K |
| 56 | 46741 | Grabill | 31 | F | 5 (2 health) | $303K |
Recommended Buyer Guides for Allen County
Editorial methodology pairs each documented risk in this county with the buyer category that addresses it, drawing on water-quality detections, housing-stock lead exposure, EPA Radon Zone designation, and FEMA flood and wildfire ratings. NSF-certified options surface where applicable, and products that match the specific contaminant take priority.
- Best Water Filters for Lead — Lead above EPA action level in 1 ZIP code
- 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
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Allen County, Indiana
Overview
Allen County in Indiana covers 56 ZIP codes with an average Home Safety Score of C (63/100).
52 of 56 ZIP codes have recorded EPA violations. 47 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.