Skip to main content
close

KingCounty.gov is an official government website. Here's how you knowexpand_moreexpand_less

account_balance

Official government websites use .gov

Website addresses ending in .gov belong to official government organizations in the United States.

lock

Secure .gov websites use HTTPS

A lock lock or https:// means you've safely connected to the .gov website. Only share sensitive information on official, secure websites.

Water quality monitoring data

Look up water quality data from across King County including biological, chemical, and hydrologic data. King County uses the data to ensure the continued health of our waters and to help track effectiveness of corrective actions.
expand_less