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Aerial photos of the five treatment plants
August 11, 2022

Celebrating our award-winning treatment plants

All five of King County’s wastewater treatment plants received 2021 National Association of Clean Water Agency’s Peak Performance Awards, honoring multiple consecutive years of compliance with state and federal effluent permit limits.
July 28, 2022

Flying Solo

The use of an RPAS—or Remotely Piloted Aircraft System—by the County began about six years ago, but it is only recently that WTD came to own and operate our own devices.