Hamilton County, New York
11 ZIP codes · Avg score 79/100 · Grade B · Updated 2026-06-03
Across all 11 ZIP codes in Hamilton County, tap water consistently meets or exceeds federal safety standards.
How Hamilton County Compares
How Hamilton County Compares
Hamilton County scores 18 points above the New York state average (61/100) and 11 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Hamilton 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: 14.6 (asthma 10.9%, diabetes 13.4%)
Estimated additional annual cost per homeowner: $1,079, driven primarily by energy_code_gap
Infrastructure: 0.459% avg pipe failure probability, 82% of ZIPs at high risk
72.2% of homes built before 1978 (lead paint era)
Violation History (2022–2024)
→ Stable trendEPA violation counts by year across Hamilton County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 4 violations. Past 5 years: 9 total (9 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: $1,079
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
9,992 housing units in Hamilton 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 Hamilton County
Remediation costs are relatively manageable for most homeowners in Hamilton 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 Hamilton 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 Hamilton County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | INDIAN LAKE WD | 900 | 10 |
| 2 | Blue Mt Lake Water District | 400 | 10 |
| 3 | LONG LAKE WD | 800 | 4 |
| 4 | Raquette Lake Water District | 90 | 4 |
| 5 | Northville (v) Water Wks. | 1,180 | 1 |
9 total water systems serve Hamilton County.
All ZIP Codes in Hamilton County
11 ZIP codes tracked in Hamilton County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 12164 | Speculator | 99 | A | 1 | $185K |
| 2 | 13360 | Inlet | 99 | A | 0 | $295K |
| 3 | 12190 | Wells | 95 | A | 0 | $253K |
| 4 | 12134 | Northville | 88 | A | 1 | $198K |
| 5 | 12847 | Long Lake | 85 | A | 4 | $262K |
| 6 | 12842 | Indian Lake | 70 | B | 10 (10 health) | $227K |
| 7 | 12108 | Lake Pleasant | 66 | C | 0 | $275K |
| 8 | 12139 | Piseco | 66 | C | 0 | $271K |
| 9 | 12812 | Blue Mountain Lake | 66 | C | 0 | $393K |
| 10 | 12864 | Sabael | 66 | C | 0 | — |
| 11 | 13436 | Raquette Lake | 66 | C | 0 | $275K |
Recommended Buyer Guides for Hamilton County
Filtered against EPA monitoring data and CDC lead-exposure guidance, the guides below skip the generic catalog and connect directly to the contaminants and hazards on file here.
- Best Lead Paint Test Kits — 72.2% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Hamilton County, New York
Overview
Hamilton County in New York covers 11 ZIP codes with an average Home Safety Score of B (79/100).
4 of 11 ZIP codes have recorded EPA violations. 10 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.