Publications Home

Publication Summary

Our Ecology website has changed, which can cause broken links.
To report these, please contact us with the publication and broken link.


Criteria for Sewage Works Design (Orange Book)

Publication number Date Published Date Revised
98-37January 1978February 2019
VIEW NOW: Criteria for Sewage Works Design (Orange Book) (Number of pages: 533) (Publication Size: 3666KB)

Trouble viewing? Try these free options.
Author(s) Water Quality Program
Description The Criteria for Sewage Works Design serves as a guide for the design of sewage collection, treatment, and reclamation systems. It provides guidance to municipal wastewater collection and treatment facilities, including engineering report requirements. It is intended for use by municipal design engineers and consulting engineers.
NOTES: This guidance was updated in February 2019 to update chapter E1 as it relates to Reclaimed Water and Reuse standards.
REQUEST A COPY The mission of the Department of Ecology is to protect, preserve, and enhance Washington’s environment. To help us meet that goal, please consider the environment before you print or request a copy.

Accessibility Options
Persons with hearing loss can call 711 for Washington Relay Service
Persons with a speech disability can call 877-833-6341
Contact Water Quality Reception at 360-407-6600
Keywords guidance, guidelines, criteria, goals, health, water, sewage, sewage treatment, Criteria for Sewage, design, Orange, Orange Book

Reclaimed Water Facilities Manual: The Purple Book

Frequently Asked Questions about Ultraviolet Disinfection

Submission Of Plans And Reports For Construction Of Wastewater Facilities