State rankings
Oregon water-system rankings
Lowest-scoring systems in Oregon
Ranked lowest score first. Population shown for context.
1 HERMISTON, CITY OF HERMISTON, OR · ~20,000 served 54 2 WARM SPRINGS WATER TREATMENT PLANT WARM SPRINGS, OR · ~3,800 served 60 3 SIMNASHO SCHOOLIE WARM SPRINGS, OR · ~350 served 60 4 BURNS PAIUTE BURNS, OR · ~155 served 60 5 SIDWALTER WARM SPRINGS, OR · ~130 served 60 6 RAINBOW WATER DISTRICT SPRINGFIELD, OR · ~6,300 served 63 7 MILTON-FREEWATER, CITY OF MILTON-FREEWATER, OR · ~7,145 served 72 8 MARCOLA WATER DISTRICT SPRINGFIELD, OR · ~600 served 82 9 KLAMATH FALLS WATER DEPT KLAMATH FALLS, OR · ~40,475 served 88 10 SUNRISE WATER AUTHORITY HAPPY VALLEY, OR · ~50,003 served 90 11 SPRINGFIELD UTILITY BOARD SPRINGFIELD, OR · ~62,100 served 91 12 MILWAUKIE, CITY OF MILWAUKIE, OR · ~20,946 served 91 13 DUNDEE, CITY OF DUNDEE, OR · ~2,960 served 91 14 BEND, CITY OF BEND, OR · ~77,704 served 92 15 LAKE OSWEGO - TIGARD WATER SUPPLY WEST LINN, OR 100 16 SOUTH FORK WATER BOARD OREGON CITY, OR 100 17 JOINT WATER COMMISSION HILLSBORO, OR 100 18 NORTH CLACKAMAS COUNTY WC HAPPY VALLEY, OR 100 19 JOHNSON CREEK WATER SERVICE NEWBERG, OR 100 20 PORTLAND WATER BUREAU PORTLAND, OR · ~666,200 served 100 21 TUALATIN VALLEY WATER DISTRICT BEAVERTON, OR · ~224,600 served 100 22 SALEM PUBLIC WORKS SALEM, OR · ~199,820 served 100 23 EUGENE WATER & ELECTRIC BOARD EUGENE, OR · ~176,000 served 100 24 MEDFORD WATER COMMISSION MEDFORD, OR · ~106,068 served 100 25 HILLSBORO, CITY OF HILLSBORO, OR · ~92,632 served 100
Highest-scoring large systems in Oregon
Systems serving 10,000+ people with the best scores.
1 PORTLAND WATER BUREAU PORTLAND, OR · ~666,200 served 100 2 TUALATIN VALLEY WATER DISTRICT BEAVERTON, OR · ~224,600 served 100 3 SALEM PUBLIC WORKS SALEM, OR · ~199,820 served 100 4 EUGENE WATER & ELECTRIC BOARD EUGENE, OR · ~176,000 served 100 5 MEDFORD WATER COMMISSION MEDFORD, OR · ~106,068 served 100 6 HILLSBORO, CITY OF HILLSBORO, OR · ~92,632 served 100 7 BEAVERTON, CITY OF BEAVERTON, OR · ~88,045 served 100 8 GRESHAM, CITY OF GRESHAM, OR · ~73,932 served 100
Scores reflect EPA public records (violations, enforcement, PFAS), are system-level, and can’t account for your home’s plumbing. See the methodology.