Our Mission

The Lake Defense Force is a Seattle-based company built over the past ten years to protect and restore private and public waterfronts with natural techniques – no chemicals. Our teams of professional divers and support technicians are focused on the ethical hand removal of invasive shoreline weeds and lily pads,
and the prevention and control of dangerous algae.
We also reconstruct shorelines, redevelop ponds and create floating wetlands for customers ranging from homeowners to golf courses, apartment complexes and marinas. Our highly trained eco-warriors have a singular mission: Defend our country’s lakes and ponds to ensure they will shine and prosper for generations to come