About Us

The Clean Water Institute was created in 2010 by Clean Water Services, a public water resources utility that is nationally-recognized for its pioneering advancements in treatment technology, environmental education, business process reengineering, resource recovery and regulatory compliance.

Clean Water Services is one of the nation's most respected public utilities due, in part, to its culture of innovation. Its technology and expertise are in high demand as a result. The Clean Water Institute was created to meet this demand, expanding the ability of Clean Water Services to make a positive global difference.

As a 501(c)3 nonprofit organization, the Clean Water Institute can access diverse forms of funding to advance the research, development and implementation of new treatment technologies; watershed recovery programs; and organizational management strategies.

Interested in working with us? Contact Mac Martin at 503.681.4457. 


Diane Taniguchi-Dennis, Executive Director

Diane is Clean Water Services' first Chief Executive Officer. The new title recognizes the diverse range of activities and interests CWS engages in as a leader in watershed management and a Utility of the Future.

Diane is a licensed Professional Engineer in the State of Oregon and a Board Certified Environmental Engineer. She holds a Bachelor of Science in Civil and Environmental Engineering from Cornell University and a Master's of Business Administration from the Atkinson Graduate School of Management at Willamette University. Prior to joining Clean Water Services in 2011, Taniguchi-Dennis served as the City of Albany Public Works Director for 12 years.

Bruce Roll, Watershed Management Director

Bruce Roll has been instrumental in developing creative regulatory frameworks to address listed species under the Endangered Species Act, drinking water protection and treatment, and wastewater resource recovery with an eye to public health. Bruce holds a Doctorate in Environmental Sciences and a double Master's degree in Public Health and Microbiology.

Nate Cullen, Wastewater Treatment Director

Nate Cullen leads resource recovery operations for the Clean Water Institute. He brings a wide range of expertise on innovative wastewater treatment methods. At Clean Water Services, Nate is the Wastewater Treatment Department Director.

Mark Poling, Business Operations Director

Mark Poling brings wastewater expertise in treatment technology, operations and management to the Clean Water Institute. Mark holds a Master of Science degree from the University of Washington in Environmental Engineering and has grade IV wastewater operation certification in Oregon and Washington.

Board of Directors

Jay Waldron, President

Jay Waldron has developed a diverse practice in the areas of environmental and energy law. He is a shareholder at Schwabe, Williamson & Wyatt in Portland, OR.

Tom Brian, Vice President

Tom Brian served in politics for over 30 years. Prior to 12 years as Chair of the Washington County Commission, he spent 10 years representing Tigard in the Oregon House of Representatives and a decade before that as mayor and city councilor in Tigard.

Roy Rogers, Treasurer

Roy Rogers is a Washington County Commissioner and a Certified Public Accountant in the firm of Pauly Rogers & Company PC, one of the largest municipal auditors in the state of Oregon.

Jim Spencer, Board Member

Jim Spencer is the Principal of JM Spencer Associates, a practice founded in 2003 to provide business and market entry consulting services to US companies expanding their businesses in China and Southeast Asia.

Scroll through our 2021 Annual Report to explore our Year in Review.

Year in Review

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