Tap water in Tucson, AZ — ZIP 85742
4 public water systems serving about 789,915 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 85742
Tucson City Of
PWSID AZ0410112 · serves 732,906 ·
groundwater
0 health-based / 32 total violations (5 yrs)
· PFAS up to 8.1 ppt
Metropolitan Dwid
PWSID AZ0410076 · serves 45,570 ·
groundwater
0 health-based / 65 total violations (5 yrs)
· PFAS up to 4.8 ppt
Oro Valley Water Countryside
PWSID AZ0410175 · serves 6,031 ·
groundwater
0 health-based / 0 total violations (5 yrs)
Marana Municipal - Hartman Vistas
PWSID AZ0410329 · serves 5,408 ·
groundwater
0 health-based / 0 total violations (5 yrs)
· PFAS up to 23 ppt — above federal limit
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology