Seneca County, New York
8 ZIP codes · Avg score 55/100 · Grade C · Updated 2026-06-03
Water systems across Seneca County's 8 ZIP codes produce average compliance results overall — pockets with documented violations exist, and the variation between areas makes ZIP-level lookup the most useful tool for residents here.
How Seneca County Compares
How Seneca County Compares
Seneca County scores 6 points below the New York state average (61/100) and 13 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Seneca County, New York
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 13.8 (asthma 11.2%, diabetes 11.6%)
Estimated additional annual cost per homeowner: $1,481, driven primarily by flood
Infrastructure: 0.492% avg pipe failure probability, 63% of ZIPs at high risk
67.9% of homes built before 1978 (lead paint era)
Violation History (2021–2023)
→ Stable trendEPA violation counts by year across Seneca County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 8 violations. Past 5 years: 14 total (14 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: $1,481
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
14,792 housing units in Seneca 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 Seneca County
Remediation costs are relatively manageable for most homeowners in Seneca 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 Seneca 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 Seneca County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Romulus Water District | 213 | 16 |
| 2 | Willard Water District | 372 | 16 |
| 3 | Seneca County Water District #1 | 1,820 | 15 |
| 4 | Seneca Falls | 9,400 | 9 |
| 5 | Waterloo Village | 7,000 | 9 |
19 total water systems serve Seneca County.
All ZIP Codes in Seneca County
8 ZIP codes tracked in Seneca County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 14847 | Interlaken | 70 | B | 0 | $202K |
| 2 | 13148 | Seneca Falls | 61 | C | 2 | $130K |
| 3 | 14521 | Ovid | 61 | C | 2 | $150K |
| 4 | 13165 | Waterloo | 56 | C | 7 | $119K |
| 5 | 13065 | Fayette | 52 | D | 5 | $96K |
| 6 | 14541 | Romulus | 49 | D | 8 (7 health) | $224K |
| 7 | 14860 | Lodi | 45 | D | 0 | $153K |
| 8 | 14588 | Willard | 44 | D | 8 (7 health) | — |
Recommended Buyer Guides for Seneca County
If FEMA records flag flood-top-risk status or EPA samples show PFAS exceedances, the matching logic lifts emergency-water and PFAS-rated filtration into the recommendations — federal data drives the order, not retailer arrangements.
- Best Lead Paint Test Kits — 67.9% 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
- Best Mold Test Kits — Flood-driven moisture and mold risk
Deep Dive Reports
Detailed analysis for Seneca County, New York
Overview
Seneca County in New York covers 8 ZIP codes with an average Home Safety Score of C (55/100).
6 of 8 ZIP codes have recorded EPA violations. 14 health-based violations have been documented.
← Back to New York 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.