Delta Junction, AK Water Safety: 83/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-07-16
ZipCheckup grade for Delta Junction: B.
This ZIP looks solid, with a few items worth a quick check.
Although water quality varies across any metro, Delta Junction's systems collectively post above-average compliance scores for AK - and documented violations are few.
How Delta Junction Compares
Data: EPA SDWIS Last verified: 2026-07-16
Key Facts for Delta Junction Residents
- Average lead level: 0.0009 mg/L.
- Homes built before 1986: 48% - older plumbing may contain lead solder.
- CDC health risk index: 13.24 - above typical levels.
Delta Junction's Water Providers
Delta Junction, AK draws its residential water from 3 separate providers among the 4 federally tracked systems. Each operates independently, with its own infrastructure, rate structure, and compliance record.
- B
- B
- B
Overview
We track water quality and home safety data for 1 ZIP code in Delta Junction, Alaska, covering 4 community water systems serving approximately 4,659 people.
No EPA violations are recorded for the tracked water systems in Delta Junction as of the latest reporting period.
Home Safety Score
Average Home Safety Score for Delta Junction: B (83/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Delta Junction water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0009 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 99737 | B | Ft. Greely - Main Post | 1,257 |
All ZIP Codes in Delta Junction
- 99737 [B]
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
Updated daily.
Delta Junction Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Delta Junction Infrastructure Age
With 48% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Some cities skew heavily toward one construction era; Delta Junction does not. The median build year of 1983 reflects a housing stock where older and newer homes share the market in meaningful proportions. That mixed profile means the city carries moderate aggregate plumbing-era risk - with older homes, particularly those built before 1986, representing the portion of the stock where lead-soldered joints may still be present.
Most homes in Delta Junction 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.
Delta Junction: Lead Risk & Vulnerable Populations
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.
Pulling a tap sample fills the gap that utility data cannot close, particularly here where 48% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Delta Junction.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Delta Junction, AK