Publications Home || Browse by topic || Browse by program || Ecology website

Publication Summary

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


PFAS Concentrations in Influent, Effluent, Solids, and Biosolids of Three Wastewater Treatment Plants

Publication number Date Published
22-03-028November 2022
VIEW NOW PFAS Concentrations in Influent, Effluent, Solids, and Biosolids of Three Wastewater Treatment Plants (Number of pages: 35) (Publication Size: 602KB)

(1 pages) (150KB)

Trouble viewing? Try these free options.
Author(s) Bothfeld, F. and C. Mathieu
Description In 2021, the Washington State Department of Ecology (Ecology) carried out a study to evaluate concentrations of per- and polyfluoroalkyl substances (PFAS) from three municipal wastewater treatment plants (WWTPs) that receive influent likely to contain PFAS. In February 2021, Ecology collected samples of influent, effluent, sludge, and biosolids for analysis of 40 PFAS.

The goals of this study were to (1) conduct an initial reconnaissance of PFAS concentrations along several points in a wastewater system in Washington state, (2) better understand how PFAS moves through WWTPs with varying treatment types, and (3) evaluate PFAS speciation in a WWTP.
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.

ADA Accessibility
The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188.
Visit Ecology’s website for more information.
Contact Callie Mathieu at 360-407-6764 or
Keywords PFAS, PFOA, per-and polyfluoroalkyl substances, wastewater treatment plant, toxics monitoring, effluent, biosolids, PFOS, influents
WEB PAGE Per- and polyfluoroalkyl substances (PFAS)

Contaminants of Emerging Concern and Wastewater Treatment Plants