Tap water in Redmond, WA — ZIP 98053
4 public water systems serving about 318,116 people. PFAS "forever chemicals" have been detected here.
C
Fair
PFAS detected: at least one system serving this ZIP reported PFAS in EPA UCMR 5
testing. Levels and the 2024 federal limits are shown per system below.
Water systems serving 98053
Redmond Water System City Of
PWSID WA5371650 · serves 163,335 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 5 ppt — above federal limit
Sammamish Plateau Water & Sewer
PWSID WA5340900 · serves 79,362 ·
surface water
0 health-based / 0 total violations (5 yrs)
· PFAS up to 16.5 ppt — above federal limit
Woodinville Water District
PWSID WA5341600 · serves 66,699 ·
surface water
0 health-based / 0 total violations (5 yrs)
Union Hill Water Association Inc
PWSID WA5390260 · serves 8,720 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology