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​Washington On-Site Sewage Association

WOSSA Office & Training Center

Phone: 253.770.6594
Fax: 253.770.0896

Mailing Address:

PO Box 9279
Tacoma, WA 98490-0279

Physical Address:

WOSSA Training Center
Located on the WSU Extension Campus, Puyallup
2606 W Pioneer - Building 1045
Puyallup, WA 98371

Executive Director:

Chuck Ahrens

Office Manager:

Andrea Dodson

Whether you own a system and have a question, or are an industry professional and need to schedule a certification exam or register for a class, we are here to help. Simply fill out the contact form below and we will be notified right away. Of course, you can always give us a call at (253) 770-6594.

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Contact WOSSA - Office