CITY REPORT AK

Unalaska, AK Home Safety Data by ZIP

1 ZIP code · 0 water systems · Updated

Data: EPA SDWIS

ZIP Codes

Water Systems

N/A

ZIPs with Violations

Zone 3

Radon Risk (Low)

$449K

Median Home Value

Unalaska Water: The Quick Version

Homes built before 1986: 40% - older plumbing may contain lead solder.
CDC health risk index: 10.71.

Overview

We track home safety data for 1 ZIP code in Unalaska, Alaska, covering 0 community water system serving approximately 3,690 people. The EPA snapshots used for this build directly map water systems to 0 of 1 ZIP codes.

EPA water-system violation data is unavailable in the dataset used for this page for the tracked ZIP codes in Unalaska.

Lead & Copper

Lead data: not yet available for Unalaska
Lead action-level status: not available

Radon Risk

Dominant radon zone: Zone 3 (Low Risk)

All ZIP Codes in Unalaska

99685

Data Sources

Water quality: EPA Safe Drinking Water Information System (SDWIS)
Lead/copper: EPA Lead and Copper Rule sampling data
Radon: EPA Map of Radon Zones

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

CDC Health Data for Unalaska

7.8%

Asthma (US: 9.8%)

10.8%

Diabetes (US: 10.4%)

13.2%

Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.

Compared to National Average

Asthma 7.8% ↓

Diabetes 10.8% ↑

Mental Health 13.2% ↓

Vertical line = national average. ■ Above national · ■ Below national

How Old Is Unalaska's Housing Stock?

1999

Median Build Year

40%

Built Before 1986

11%

Built Before 1970

Copper

Likely Pipe Material

Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

Prohibited from residential plumbing since 1986, lead solder divides Unalaska's housing stock along a timeline that the median build year of 1999 straddles. A meaningful share of homes predates the ban - a configuration that places moderate aggregate pressure on plumbing-related lead risk, distributed unevenly across neighborhoods.

1999

Median Year Built

40%

Pre-1986 (Lead Paint Risk)

11%

Pre-1970 (Lead Pipes Risk)

Pre-1970 (11%) 1970–1986 (29%) Post-1986 (60%)

Most homes in Unalaska were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Protecting Children from Lead in Unalaska

40%

Homes Built Before 1986

Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Practically, the structural drivers in Unalaska - 40% pre-rule stock and citywide monitoring at or beyond the regulatory benchmark - make an in-home draw the practical way to translate aggregate averages into the specific conditions at one address.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.