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​Washington On-Site Sewage Association

​Enhanced Platform for Online Courses

​​WOSSA is excited to announce that we have transferred our distance learning courses to the National Onsite Wastewater Recycling Association site, a very user friendly platform! 


*Please Note: WOSSA's classes - On-Site 101 & On-Site 102 apply toward CEUs Washington state.

Other classes may require county approval.


WOSSA Online Training Access


                              Basics of On-Site 101Syllabus 

                                                Learners will earn 8 contact hours or .8 CEU 



                              Basics of On-Site 102Syllabus 

                                                Learners will earn 8 contact hours or .8 CEU