Because the Ranney collector draws both groundwater and surface water, the city’s water system has not been in compliance with drinking water standards. Water quality would be further affected by dam removal and the subsequent release of accumulated sediment.
The new Port Angeles Water Treatment Plant (PAWTP), which became operational in February 2010, allows the city to comply with water quality standards during the dam removal process and into the future.
Primary elements of the facility include an Actiflo/filter/clearwell/administrative building, a concrete backwash holding and recycle storage basin, and a concrete sludge drying bed with a sand layer for drying.
Read more about the PAWTP in the Elwha River Ecosystem Restoration Implementation Final SEIS (PDF).
Last updated: February 28, 2015