Larsen Bay, AK: 1 Health Violation — 98/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
Based on current monitoring, Larsen Bay holds an above-average drinking water safety record for AK — violations are infrequent and typically minor when they do appear.
How Larsen Bay Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Larsen Bay Residents
- Your city's water systems recorded 17 violations in the past 5 years.
- Average lead level: 0.0012 mg/L.
- Homes built before 1986: 65% — older plumbing may contain lead solder.
- Estimated remediation: $300 per household.
- CDC health risk index: 11.26.
Larsen Bay's Water Providers
Federal drinking water records identify 1 system operating in Larsen Bay, AK. One of those systems serves the overwhelming majority of residential addresses, concentrating infrastructure management, rate authority, and EPA compliance reporting within a single organization.
Overview
We track water quality and home safety data for 1 ZIP code in Larsen Bay, Alaska (population ~108), covering 1 community water system serving approximately 271 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Larsen Bay: A (98/100)
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
Larsen Bay water systems draw from: Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0012 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| E. coli | Microbiological | 14 | 1 |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 6 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 4 | 1 |
| Lead | Inorganic | 2 | 1 |
| Total Coliform | Microbiological | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 99624 | A | 17 | 1 | Larsen Bay Water System |
All ZIP Codes in Larsen Bay
- 99624 [A] — 17 violations ⚠
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.
Larsen Bay 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
What's in Larsen Bay's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Larsen Bay Infrastructure Age
With 65% 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
When a city's housing median build year is 1987, as in Larsen Bay, the implication for water quality research is straightforward: municipal-level data captures what leaves the treatment plant, but household plumbing from before 1986 determines what actually arrives at the tap. In cities where older housing predominates, that gap between system-level and household-level data is widest.
Over half of homes in Larsen Bay were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
How Remediation Costs Compare in Larsen Bay
For most homeowners in Larsen Bay, the estimated cost of water and safety remediation represents a proportionally modest share of what properties are worth — placing this area in the lower tier of the remediation share scale.
Remediation costs in Larsen Bay are relatively low compared to home values. The $150–$600 estimated range is a small fraction of median property value. Home values are 42% below the Alaska average.
Larsen Bay: 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.
After the federal action removing lead-bearing solder from new plumbing took effect, building practice shifted — but 65% of the Larsen Bay inventory predates that line. With aggregate samples near or beyond 0.015 mg/L, an in-home check moves out of the optional column into the standard list.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Larsen Bay, AK