What's in UNALASKA WATER SYSTEM's water?
UNALASKA WATER SYSTEM has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 9,400, over 603 connections.
UNALASKA WATER SYSTEM's record against the rest of the country
UNALASKA WATER SYSTEM has 300 violations on record in total, 3 of thems health-based - ranking it 4,616th of 12,903 systems by violation count, the 64th percentile nationally.
How UNALASKA WATER SYSTEM compares within AK
AK's 35 covered systems average 8.9 health-based violations each; UNALASKA WATER SYSTEM carries 3, not more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for UNALASKA WATER SYSTEM is from 2025-01-10 (health-based: 2004-01-01). Last reported to EPA: 06/19/2026.
What kind of problem, specifically
UNALASKA WATER SYSTEM's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Microbial contamination / treatment technique - flagged from: Surface Water Treatment Rule
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
This is what UNALASKA WATER SYSTEM reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 300 logged violations can see. The guide to what this data misses covers that gap.