Our Clean Water Services team is dedicated to serving over 600,000 customers in the Tualatin River Watershed.

As the region’s water resources management utility, everything we do at Clean Water Services aims to protect public health, while enhancing the natural environment.

Regulatory Affairs

About Regulatory Affairs

The Regulatory Affairs Department (RAD) provides technical support to other District divisions and departments in the form of research and data analysis of ambient water quality, Total Maximum Daily Load (TMDL) development, permit compliance and monitoring, and influencing the development of state and federal regulations. RAD also coordinates NPDES permit renewal and annual reporting, environmental management system implementation and Regulatory Compliance Team direction. The District's industrial pretreatment program is located in RAD. Read the Stormwater Annual Report 2019 (PDF, 5.9MB).

Source Control

Source Control is responsible for complying with the federally mandated Industrial Pretreatment Program, which requires the District to regulate (through permits) customers with industrial discharges. Source Control is also responsible for responding to surface water complaints and performing headworks loading analysis on the District’s wastewater treatment facilities to ensure industrial users do not adversely impact plant operations. Source Control also has an active role with National Pollutant Discharge Elimination System (NPDES) stormwater requirements. Staff oversees specific stormwater best management practices, and conducts an inspection and plan review program for industries’ compliance with their DEQ-issued 1200-Z stormwater permits.

For more information on our programs, go to our Business & Industry pages.

Laboratory Services

Laboratory Services supports District departments and their regulatory needs by providing environmental sampling and analysis services. Lab staff collects 30,000 samples and runs 151,000 tests each year in the Tualatin Basin to protect public health and the environment. Services include:

  • Collection and analysis of samples from the Durham, Forest Grove, Hillsboro and Rock Creek Treatment Facilities
  • Ambient monitoring of the Tualatin River and its tributaries
  • Management, collection and analyses for compliance with regulations and programs relating to surface water, TMDL’s, groundwater, Industrial Pretreatment, biosolids and effluent reuse, special projects, and the watershed-based NPDES permit—which covers both treatment facilities and stormwater
  • Field work and analysis of fire suppression water samples, pump station spills and overflows, and public complaints of sewage problems
  • Monitoring services and data to comply with federally mandated Industrial Pretreatment Program, which includes industrial and septage hauler discharges
  • Data to support the biosolids program and make sure it meets the EPA 503 regulations for land application

Wastewater Treatment

About Wastewater Treatment

The Wastewater Treatment Department provides operation, maintenance, engineering, and capital improvements for Clean Water Services' four treatment facilities. Over 65 million gallons of wastewater per day, is pumped and treated to some of the highest standards in the nation. It is then returned to the environment in the Tualatin River or reused for irrigation on agricultural crops and golf courses. Wastewater includes Administration, Operation and Maintenance, and Treatment Plant Services.

Watershed Management

About Watershed Management

The Watershed Management Department (WMD) at Clean Water Services plans, manages and provides leadership in Water Resources Infrastructure, Strategic Watershed Assessment and Planning, Stream System Stewardship and Community Watershed Action. WMD supports and implements programs identified in the integrated watershed based permit. Department staff partner with local governments, natural resource agencies, businesses, nonprofits, local watershed groups and citizens to address the regulatory and ecological needs of the Tualatin River Watershed


About Conveyance

The Conveyance Systems Department (CSD) is responsible for the management, design, construction oversight, and maintenance of the conveyance systems of the District. It is composed of the Administration program, Engineering Division (which includes Capital Projects Administration, Development Related Services, and Service Delivery Planning) and Field Operations (which includes Field Operations Administration, System Repair, System Maintenance, and Surface Facility Maintenance).

Development Services

Clean Water Services is responsible for sanitary sewer service and storm and surface water management throughout urban Washington County. These responsibilities include reviewing and issuing permits for erosion control, construction, modification or connection to the public sanitary and surface water management systems, and issuance of water quality sensitive area permits.

The requirements of Clean Water Services' Design and Construction Standards apply to all development within the service area. Through intergovernmental agreements with the larger cities within the service area, Clean Water Services allows the large cities within its service area Beaverton, Cornelius, Forest Grove, Hillsboro, Sherwood, Tigard, and Tualatin to issue permits within their city limits. The goal of Development Services is to provide the most efficient and effective way for you to obtain your development project permits.


The Engineering Division is responsible for the management, design, construction oversight, and maintenance of the systems that carry wastewater to our treatment facilities and stormwater to water quality facilities, streams and the Tualatin River. The Engineering Division is composed of two programs: Capital Projects Administration and Development Related Services. These two programs provide construction plan review, quality control services, conveyance systems, design and project administration, technical information, including system mapping, and permitting services outside of the Source Control Division.

Field Operations

Field Operations is responsible for maintenance of the sanitary and Surface Water Management (SWM) conveyance systems. Specifically, the Division provides administration, system repair, system maintenance and SWM Surface Facility Maintenance. Programs include: 


  • Street Sweeping of curbed public streets to control sediment and nutrients from entering the stormwater system and local streams. Call our hotline at 503.547.8116.
  • Retention/Detention Basin Maintenance to keep water quality and water quantity facilities operational. Routine maintenance includes mowing, weeding, spraying, inlet and outlet cleaning and repair, debris and litter removal, replanting and care of vegetation, and maintenance of the levees around the facilities.
  • Ditch Cleaning provides contract services to Washington County for the cleaning of roadside ditches and roadside pipe systems.
  • The Material Processing Yard (PDF, 1.5MB) processes the material that CWS and its partners generate through street sweeping, catch basin cleaning, pipe maintenance and related activities.
  • Sanitary System Maintenance keeps sanitary mainlines in the conveyance system operational and responds to customer calls and emergencies. Maintenance includes line cleaning, root control, system surveying, trunk lines inspection, manhole replacement,  and rodent control.
  • TV Inspection provides routine television inspection of sanitary and storm lines. The District also provides contracted TV inspection to the Cities of Cornelius and Sherwood. This program also supports rehabilitation projects for the reduction of infiltration and inflow (I&I).
  • SWM System Repair activities include storm line, catch basin and manhole repair and replacement, reshaping of and silt removal from creeks and streams, and major debris removal from retention/detention ponds.

Office of the General Manager

About Office of the General Manager

The Office of the General Manager (OGM) is responsible for ensuring implementation of the policy direction provided by the Board of Directors and for consideration of advisory input from Clean Water Services' Citizen Advisory Commission (CWAC). The OGM is also responsible for overall management and administration of District operations, intergovernmental coordination with partner cities, Washington County, and other jurisdictions.

Government & Public Affairs

Government & Public Affairs develops and manages the strategic direction of Clean Water Services’ communications, outreach, marketing and public involvement strategies to consistently and effectively promote awareness, develop recognition, and build credibility with the public, environmental interests, business community, media, key opinion leaders and elected officials. The program is a key element in meeting National Pollution Discharge Elimination System (NPDES) requirements related to public involvement and education, and Endangered Species Act (ESA). Learn more about our education programs.

Human Resources

The Human Resources department provides for planning, developing and implementing employee related processes and programs that allow Clean Water Services to remain competitive while encouraging a team-oriented, quality work environment.

HR program responsibilities include:

  • Acting as staff consultants to management and supervisory personnel
  • Recruitment, selection and new employee orientation
  • Administration of the compensation and classification plans
  • Labor relations including contract interpretation and dispute resolution
  • Employee training, development and performance evaluations
  • Administration of human resources related policies and procedures
  • District compliance with state and federal laws pertaining to employees

Learn more about employment at Clean Water Services.


Legal Services provides proactive advice to other departments and divisions to avoid, minimize and resolve regulatory and other legal issues, as well as to assist in the permitting process and in developing a new innovative watershed permit.

Business Operations

About Business Operations

The Business Operations Department is responsible for all financial operations in the District, including budget development, financial planning and forecasting, accounting, utility billing, debt issuance and management, rates and charges analysis, contracts and risk management, and administration of County service agreements. This department is also responsible for development of policies governing financial and capital planning and cost recovery, as well as for provision of accurate and timely financial information to the District Board, managers and customers.

Learn more about the Business Operations Department and Clean Water Services' Budget:

Information Technology

Information Technology (IT) provides information management support and communications support for the District. This includes, but is not limited to, information technology vision and direction; application review, recommendation and implementation; database design, maintenance and storage of data; hardware selection, installation and support; operating system software support; PC support including selection, installation and maintenance; user support for office applications; Internet capabilities; GIS technologies; LAN and WAN configuration and operation; telecommunications and other management support functions.

More specifically, the program includes: management, support, and implementation of the Strategic Information System Plan (SISP); support of both local area networks and the wide area network, Internet and Intranet access, servers, routers and computers throughout the District; user support through the help desk in accordance with the established Service Level Agreement; coordination of on-site training provided by external training instructors; change control of the production computing environment. In addition, the IT department has responsibility for all copiers, faxes and scanners and implementing the technical aspects of conference room facilities.

Finance & Accounting

The Finance and Accounting program is responsible for strategic financial planning and direction, and financial accounting and reporting. Finance and Accounting provides services related to external financial reporting through the Comprehensive Annual Financial Report (CAFR) 2019 (PDF, 3MB), general ledger accounting, internal financial reporting, accounts payable and receivable, payroll, and utility billing and collections. This group also manages budget planning, development, and administration; capital improvement plan development and project accounting; rate analysis; financial forecasting and planning; and bond issuance and debt management.

Risk & Benefits

The Risk and Benefits program includes risk analysis and reporting, loss prevention, safety training, and employee benefits administration.

Fleet & Purchasing

The Fleet and Purchasing program includes purchasing and outfitting of vehicles, and service and maintenance, while ensuring the efficient operation of all District motor vehicles to include light, medium, and heavy vehicles and equipment. Fleet and Purchasing also provides a determination and disposal of all surplus property. Fleet and Purchasing provides services related to procurement of equipment, goods and services, and supplies, while ensuring District compliance with purchasing rules and regulations. Some District-wide or commonly used contracts are administered and managed in Fleet and Purchasing.

Flip through our Annual Report to learn more about what we've done in the last year.

Annual Report

Receive news on what we are doing in the community and our innovative solutions to continue on providing clean water.