Nome County, Alaska
14 ZIP codes · Avg score 85/100 · Grade A · Updated 2026-06-03
Throughout Nome County, the 14 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 Nome County Compares
How Nome County Compares
Nome County scores 10 points above the Alaska state average (75/100) and 17 points above the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-03
ZIP Code Risk Map
Water Quality Map: Nome County, Alaska
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 14.9 (asthma 12.8%, diabetes 13%)
Estimated additional annual cost per homeowner: $674, driven primarily by energy_code_gap
Infrastructure: 0.556% avg pipe failure probability, 86% of ZIPs at high risk
53.8% of homes built before 1978 (lead paint era)
Violation History (2021–2025)
↓ Improving trendEPA violation counts by year across Nome County water systems. Health-based shown in red, total in blue.
Peak year: 2022 with 26 violations. Past 5 years: 56 total (56 health-based). Health-based violations are declining versus the prior 2-year window.
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: $674
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
3,885 housing units in Nome 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 Nome County
Remediation costs are relatively manageable for most homeowners in Nome 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 Nome 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 Nome County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | Unalakleet City Water Supply | 757 | 106 |
| 2 | Shaktoolik Water System | 270 | 91 |
| 3 | Bering St Sd - Teller Sc/wash | 295 | 89 |
| 4 | Koyuk Public Water System | 277 | 46 |
| 5 | Shishmaref Water System | 572 | 43 |
15 total water systems serve Nome County.
All ZIP Codes in Nome County
14 ZIP codes tracked in Nome County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 99784 | White Mountain | 98 | A | 4 (1 health) | $105K |
| 2 | 99659 | Saint Michael | 97 | A | 24 (2 health) | — |
| 3 | 99785 | Brevig Mission | 95 | A | 26 (3 health) | $81K |
| 4 | 99742 | Gambell | 93 | A | 41 (5 health) | $77K |
| 5 | 99753 | Koyuk | 93 | A | 46 (5 health) | $97K |
| 6 | 99769 | Savoonga | 91 | A | 14 | $105K |
| 7 | 99739 | Elim | 88 | A | 34 (6 health) | $117K |
| 8 | 99771 | Shaktoolik | 88 | A | 91 (3 health) | $93K |
| 9 | 99772 | Shishmaref | 88 | A | 43 (7 health) | $117K |
| 10 | 99671 | Stebbins | 86 | A | 27 | $116K |
| 11 | 99762 | Nome | 84 | B | 6 | $324K |
| 12 | 99778 | Teller | 80 | B | 89 (4 health) | $57K |
| 13 | 99783 | Wales | 75 | B | 39 (7 health) | $97K |
| 14 | 99684 | Unalakleet | 36 | F | 106 (31 health) | $171K |
Recommended Buyer Guides for Nome County
Federal and certification sources drive the ordering: EPA monitoring data, NSF certifications, FEMA flood maps, and CDC lead guidance — guides surface only when county data warrants them.
- Best Water Filters for PFAS — PFAS detected in 1 ZIP code
- Best Lead Paint Test Kits — 53.8% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Nome County, Alaska
Overview
Nome County in Alaska covers 14 ZIP codes with an average Home Safety Score of A (85/100).
14 of 14 ZIP codes have recorded EPA violations. 74 health-based violations have been documented.
← Back to Alaska 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.