Saltwater Swimming Beaches
Saltwater Beach Closures and Advisories Map – Check your marine beach for closures or advisories during the swimming season. This program is administered by the Department of Ecology's BEACH Program and the Department of Health's BEACH Program.
Freshwater Swimming Lakes
Northwest Toxic Algae – See if your lake is having any problems with algal blooms.
Local Health Departments – Some local health agencies monitor lakes.
King County Swimming Beach Monitoring – King County marine beaches and lake monitoring.