What's in NASELLE's water?
NASELLE has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. Population served: 2,073, over 589 connections.
Ranked against every other system in this dataset
NASELLE has 68 violations on record in total, 2 of thems health-based - ranking it 5,847th of 12,903 systems by violation count, the 55th percentile nationally.
How NASELLE compares within WA
WA's 322 covered systems average 3.7 health-based violations each; NASELLE carries 2, 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 NASELLE is from 2007-01-01 (health-based: 1995-01-06). Last reported to EPA: 06/19/2026.
What kind of problem, specifically
NASELLE'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: Coliform (TCR); 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 NASELLE 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. Between the utility's meter and NASELLE's customers' taps is household plumbing, invisible to a system-level record ranked 5,847th of 12,903 by violation count. The guide to what this data misses covers that gap.