Lake Whatcom

Lake Whatcom is the drinking water source for more than 100,000 people in Whatcom County. We work with local partners to protect the lake and improve water quality.

Watershed Challenges

Pollution runoff, nutrients, aquatic invasive species and more threats to lake health

Stewardship Solutions

What you can do to help improve water quality

Programs and Projects

Lake Whatcom Management Program efforts

Lake Whatcom Cooperative Management logo with a blue water droplet. Sunset over Lake Whatcom in the background.

Lake Whatcom Management Program

Multi-agency program designed to protect the lake

About Lake Whatcom

Lake facts, water quality, fish and wildlife, water supply and treatment

Sunset photo of Lake Whatcom with reflection of trees and hillsides in the lake water.

Rules and Regulations

Special rules for residents living in the Lake Whatcom watershed

Lake Whatcom Overview Video

Learn about Lake Whatcom water quality challenges and solutions in the video below.

More Information

Have questions about Lake Whatcom or the protection programs? Email lakewhatcom@cob.org for more information.

Resources

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