Traveling with plants attached to your boat/trailer in Washington State is:

Quagga and zebra mussels came to North America in the ballast tanks and on the anchor chains of large, transoceanic ships that entered the Great Lakes.

Aquatic invasive species can clog water intake pipes and impede the flow of water to municipal water supplies, irrigation operations, and power plants.

The goal of decontamination is to kill and remove all evidence of aquatic invasive species using high-pressure, hot water.

Do you need to purchase an AIS permit at the beginning of each year's boating season?

Inspectors will only need to do a visual inspection of the exterior of the watercraft.