Tap water in Lake Oswego, OR — ZIP 97035
3 public water systems serving about 710,200 people.
B
Good
Water systems serving 97035
Portland Water Bureau
PWSID OR4100657 · serves 666,200 ·
surface water
0 health-based / 1 total violations (5 yrs)
Lake Oswego Municipal Water
PWSID OR4100457 · serves 40,000 ·
surface water
0 health-based / 2 total violations (5 yrs)
Rivergrove Water District
PWSID OR4100461 · serves 4,000 ·
groundwater
0 health-based / 26 total violations (5 yrs)
Grades summarize EPA SDWIS violation records (last 5 years) and UCMR 5 PFAS results. They are informational, not a health determination. Methodology