The Washington Department of Ecology says that it is using new methods to more accurately test for waterborne disease in state waters.
In a release they state that the methods will better protect people while they are swimming, boating, or taking part in other recreational activities.
Ecology is transitioning away from using fecal coliform testing for recreational uses and testing for E. coli in freshwater and enterococci bacteria in saltwater.
They tell KXRO that the U.S. Environmental Protection Agency and many other states have already made this transition, and that current science shows it is a more accurate way to protect against waterborne disease.
A technical advisory group with representation from regulated industries, tribes, and environmental groups provided input on the rule change. Ecology sought public comment in July 2018.
Water quality standards, and the related testing, are used to determine compliance with the state’s wastewater discharge rules, permitting, monitoring, and prioritizing cleanup plans for waterbodies.
The new bacteria testing methods are not related to beach closures, which are managed by local health departments.
This action does not change the water quality testing for shellfish used by the Washington State Department of Health to classify shellfish such as razor clams as safe for consumption.
Fecal coliform bacteria will continue to be measured in saltwater to protect shellfish harvesting areas, using standards set by the U.S. Food and Drug Administration.
Laboratories that test for bacteria and dischargers that monitor releases into waters have until Jan. 1, 2021, to begin using the new testing methods. Additional information is available on Ecology’s Recreational Use Criteria rulemaking webpage.
Visit the water quality website for more on water quality standards.