PWSID
WA5302950
State
Washington
City
Arlington
Population served
20,418
Primary source
SWP
Score history
No change since tracking began Jun 18, 2026.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Aug 2023). Levels in parts per trillion (ppt).
PFHxS
Perfluorohexanesulfonic acid
4.3 ppt
limit 10 ppt
Violations & enforcement
No violations are on record for this system in EPA’s SDWIS/ECHO data.
This profile is built from EPA public records for system WA5302950 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.