Our clean water facilities

Clean Water Services cleans 60 million gallons of wastewater day for more than 480,000 customers in urban Washington County. The wastewater is collected by a vast network of more than 800 miles of sewer lines and 39 pump stations and routed to one of four treatment plants—Durham, Rock Creek, Hillsboro and Forest Grove.

• Durham Advanced Wastewater Treatment Facility
• Hillsboro Wastewater Treatment Facility
• Rock Creek Advanced Wastewater Treatment Facility
• Forest Grove Wastewater Treatment Facility
• Our two "green" facilities: Administrative Building Complex and Field Operations

Learn more about wastewater treatment from the Water Environment Federation. 

Learn how Clean Water Services processes wastewater to among the highest standards in the nation!