Drinking Water Systems Reported for ZIP 97123
HILLSBORO, Oregon — 7 water systems are associated with this ZIP in EPA service-area data
Largest Reported System
RAINBOW ENDS WATER SYSTEM
PWSID: OR4101350
2 EPA violation records in the five-year period ending June 30, 2026
B
Few non-health records
TapScore compliance-history grade
Other Systems Reported for This ZIP
WOLSBORN FARMS WATER DISTRICT
92 served78 historical records8 recent
C
HILLSBORO-CHERRY GROVE
1,628 served39 historical records4 recent
C
JOINT WATER COMMISSION
0 served35 historical records4 recent
C
SOUTH HILLS WATER SYSTEM
250 served14 historical records
A
FIR GROVE HOMEOWNERS ASSN
450 served25 historical records3 recent
C
HILLSBORO, CITY OF
92,632 served3 historical records1 recent
B