Chapter 173-230 WAC

Ecology is conducting rulemaking for Chapter 173-230 WAC Certification of Operators of Wastewater Treatment Plants. This rulemaking will establish a fee schedule, clarify, and make improvements to the Wastewater Operator Certification Program. 

We are holding an informal comment period on the draft funding model and draft rule language from October 25 - November 26, 2018.  Please see below for more information. 

Rulemaking timeline


Announcement phase (CR-101)

Filing date:
Jun. 22, 2018

Announcement documents
​Announcement Notice – CR-101

Rule development phase

June 22, 2018 - March 2019

Public input & involvement

Advisory meetings

September 6, 2018 
Rule Advisory Committee Meeting
9:30 AM - 2:30 PM
Lacey Community Center
6729 Pacific Ave SE
Olympia, WA 98503

October 2, 2018
Rule Advisory Committee Meeting
St. Placid Priory
500 College St NE
Lacey, WA 98516

Informal Comment Period

Oct. 25 - Nov. 26,  2018
Provide comments on our online form.

Documents for review:

Additional languages

Español (Spanish) 中文 (Chinese) Tiếng Việt (Vietnamese) 한국어 (Korean)


To request ADA accommodation for disabilities, or printed materials in a format for the visually impaired, call Sultana Shah at 360-407-6831 or email People with impaired hearing may call Washington Relay Service at 711. People with speech disability may call TTY at 877-833-6341.