Drinking Water Systems Reported for ZIP 97035
LAKE OSWEGO, Oregon — 7 water systems are associated with this ZIP in EPA service-area data
Largest Reported System
EXCALIBUR VILLAGE
PWSID: OR4100599
3 EPA violation records in the five-year period ending June 30, 2026
C
Some recent records
TapScore compliance-history grade
Other Systems Reported for This ZIP
LAKE OSWEGO MUNICIPAL WATER
40,000 served31 historical records2 recent
B
ASHDOWN WOOD WATER COMPANY
75 served11 historical records4 recent
C
RIVERGROVE WATER DISTRICT
4,000 served66 historical records26 recent
C
LAKE GROVE WATER DISTRICT
3,100 served31 historical records3 recent
C
WESTWIND MOBILE HOME PARK
104 served24 historical records
A
CARVER MOBILE RANCH
110 served131 historical records3 recent
C