Willamette Subwatersheds

What We Do

Customer Services

POL

Environmental Services

What We Do

Watershed Services

Portland's Watersheds

Willamette Watershed

Willamette Watershed Characterization Report

Willamette Subwatersheds

Conditions unique to each of the 27 Willamette subwatersheds

Miller

View

Separate Sanitary Sewers

This subwatershed has no sewer system. The few structures are served by private septic systems. Failing or unmaintained septic systems can pose a potential threat to water quality if they pollute nearby water sources with bacteria and nutrients.