Onsite Sewage Systems

Updated Through November 1, 2018


The State Board of Health is in the process of considering changes to the State Onsite Sewage Systems Regulations, WAC 246-272A. This process provides the opportunity for public participation as either direct participants or interested individuals. CR-101 filing . The following overview was provided July 3, 2018, by the State Department of Health (DOH) — In January 2018, the State Board of Health directed the department to begin the process of revising the On-site Sewage System Rule, Chapter 246-272A WAC. The department has convened a diverse stakeholder workgroup to develop recommendations for revisions. The workgroup met on June 25, 2018, in Kent for the process kickoff meeting. At the meeting, the workgroup approved a charter to guide and govern their work and reviewed issues to consider for revision. The department provided presentations reviewing the history of on-site sewage system regulations in Washington, the charter and process timeline, and the division of work among subcommittees. The materials from the meeting are available on the department’s on-site rule revision webpage, which may be accessed here: State DOH Onsite Rule Revision . The next committee meeting is scheduled for September 13, 2018. The committee will begin work on developing recommendations for revisions related to issues identified during the department’s 2017 review of Chapter 246-272A WAC. As the process continues the department will solicit new issues to consider for revision from the committee as well as input from the public. For more information regarding this rule revision contact Mike Dexel, Rule Project Manager, or Jeremy Simmons, Wastewater Program Manager.

The Seattle-King County Public Health Department oversees and regulates onsite sewage systems (OSS) in King County up to 3,500 gpd (approx 10 homes), including the City of Seattle and other municipalities. SKCPH OSS Program Website . In 2016 the Seattle-King County Public Health Department’s Environmental Health Services Division commenced a review of its 2007 Onsite Sewage System Management Plan with an eye to developing sustainable financial measures for its program, together with updating and improving the overall management plan affecting roughly 85,000 OSS in King County.  A workgroup was established to review and provide input to the Plan update. The details regarding and results of this review and update of the OSS Management Plan may be viewed here, including downloading a copy of the Revised Draft OSS Management Plan (September 2016): 2016 OSS Plan Update Website .

OSS BILL HB 2420 IS DEAD FOR NOW — 2018 LEGISLATIVE SESSION CLOSED MARCH 2 WITHOUT FINAL ACTION TAKEN.  Keep an eye on the future for HB 2420 regarding onsite sewage systems as it works its way through the 2019 and/or subsequent sessions of the State Legislature.  For detailed information and status on this Bill, including any future hearings, please visit the following legislative website (for now, but subject to change):  HB 2420 Legislative History .  CAPR (Citizens’ Alliance For Property Rights) has produced and published on YouTube ™ a video presentation of onsite sewage systems, how they function, and their environmental impact (or lack thereof).  With the express written permission of CAPR (by and through its Secretary, Jeff Wright) given to the GMVUAC on January 16, 2018, you may view CAPR’s production at the following website: The Truth About Septic Systems .  Please visit our Citizen Surveys webpage to view the results of our 2017 Survey, and especially the responses to our questions regarding sewage systems.  See Questions 29 – 33.


Hits: 6