Water Quality

Safe and Clean Quality Water

Cascade is all about safe and clean water.

Cascade works with the Washington Department of Ecology, Pierce County, the Muckleshoot Indian Tribe, and the Puyallup Tribe of Indians, in collecting and monitoring water quality data as well as assessing impacts of invasive species in Lake Tapps.

Cascade is working with all partners and residents to ensure best practices are observed in yard care, septic maintenance and other efforts to keep Lake Tapps healthy. Click here for Cascade’s Natural Yard Care page.

When Cascade takes water from Lake Tapps for municipal drinking water use it will be treated to meet or exceed all federal, state and local standards.

Invasive Species / Milfoil

Invasive species, like milfoil, have posed environmental and maintenance challenges for Lake Tapps. Since 2010, Cascade has worked to manage this growth, and has removed a large portion of invasive plants. Cascade will continue to monitor and follow up with appropriate treatment during growing seasons. Click below for maps of the 2017 treatment plan and treatments from 2010-2016.

Many areas in Lake Tapps have native aquatic plants, which are important to the health of any lake system. Cascade will not remove native plants. If residents desire to remove native vegetation, they should contact Pierce County, Bonney Lake, or the Washington State Department of Fish and Wildlife, and obtain any necessary permits before removing native vegetation from the shoreline or reservoir bed.