Drinking Water Systems in LAKE OSWEGO, Oregon
8 water systems are reported for this city, with a combined service population of 48,025. The systems have 47 EPA violation records in the five-year period ending June 30, 2026.
Water Systems Serving LAKE OSWEGO
EXCALIBUR VILLAGE
180 served104 historical records3 recent
C
SKYLANDS WATER COMPANY
250 served21 historical records2 recent
B
LAKE OSWEGO MUNICIPAL WATER
40,000 served31 historical records2 recent
B
GLENMORRIE COOPERATIVE ASSN
310 served17 historical records4 recent
C
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
CARVER MOBILE RANCH
110 served131 historical records3 recent
C
EPA Contaminant Categories in Historical Violation Records
Coliform (TCR)67 records
Consumer Confidence Rule22 records
Lead and Copper Rule20 records
COLIPHAGE12 records
Nitrate10 records
Benzene8 records
Radium-2268 records
Gross Alpha8 records
Haloacetic Acids (HAA5)8 records
Total Trihalomethanes (TTHMs)8 records
Category counts aggregate historical compliance records across listed systems. They do not show current concentrations or household test results.