Lake and Peninsula County, Alaska
11 ZIP codes · Avg score 66/100 · Grade C · Updated 2026-06-04
For most households in Lake and Peninsula County, the 11 tracked ZIP codes show adequate but uneven water quality.
How Lake and Peninsula County Compares
How Lake and Peninsula County Compares
Lake and Peninsula County scores 9 points below the Alaska state average (75/100) and 2 points below the national average (68/100).
Data: EPA SDWIS Last verified: 2026-06-04
ZIP Code Risk Map
Water Quality Map: Lake and Peninsula County, Alaska
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Key Risk Factors
Health risk index: 15.5 (asthma 12.5%, diabetes 14.6%)
Estimated additional annual cost per homeowner: $473, driven primarily by energy_code_gap
Infrastructure: 0.415% avg pipe failure probability, 36% of ZIPs at high risk
56.1% of homes built before 1978 (lead paint era)
Violation History (2023–2025)
→ Stable trendEPA violation counts by year across Lake and Peninsula County water systems. Health-based shown in red, total in blue.
Peak year: 2024 with 16 violations. Past 5 years: 30 total (30 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: $473
Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).
Housing Age Distribution
987 housing units in Lake and Peninsula 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 Lake and Peninsula County
Remediation costs are relatively manageable for most homeowners in Lake and Peninsula 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 Lake and Peninsula 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 Lake and Peninsula County ranked by EPA violation count.
| # | Water System | Population | Violations |
|---|---|---|---|
| 1 | NONDALTON | 205 | 129 |
| 2 | Chignik Lake Water System | 200 | 49 |
| 3 | Perryville Water System | 88 | 45 |
| 4 | Chignik Lagoon Water System | 273 | 29 |
| 5 | Egegik | 485 | 4 |
All ZIP Codes in Lake and Peninsula County
11 ZIP codes tracked in Lake and Peninsula County.
| # | ZIP Code | City | Safety Score | Grade | Violations | Home Value |
|---|---|---|---|---|---|---|
| 1 | 99579 | Egegik | 98 | A | 4 (1 health) | — |
| 2 | 99640 | Nondalton | 87 | A | 129 (7 health) | $138K |
| 3 | 99548 | Chignik Lake | 81 | B | 49 | $188K |
| 4 | 99565 | Chignik Lagoon | 81 | B | 29 | $178K |
| 5 | 99648 | Perryville | 81 | B | 45 | $93K |
| 6 | 99549 | Port Heiden | 50 | D | 0 | $138K |
| 7 | 99564 | Chignik | 50 | D | 0 | $117K |
| 8 | 99606 | Iliamna | 50 | D | 0 | $172K |
| 9 | 99647 | Pedro Bay | 50 | D | 0 | $275K |
| 10 | 99649 | Pilot Point | 50 | D | 0 | $154K |
| 11 | 99653 | Port Alsworth | 50 | D | 0 | $450K |
Recommended Buyer Guides for Lake and Peninsula County
Below: editorial picks, no sponsored placements.
- Best Lead Paint Test Kits — 56.1% of homes built before 1978
- Best Under-Sink Reverse Osmosis Systems — Multi-contaminant removal at the kitchen tap
Deep Dive Reports
Detailed analysis for Lake and Peninsula County, Alaska
Overview
Lake and Peninsula County in Alaska covers 11 ZIP codes with an average Home Safety Score of C (66/100).
5 of 11 ZIP codes have recorded EPA violations. 8 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.