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Invasive mussels
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Posted December 7, 2010, 12:02 pm

Threats and prevention efforts in Utah

Invasive quagga and zebra mussels are a major threat to our quality of life. They are small, clam-like creatures that reproduce rapidly and deplete nutrients in the water. They jeopardize power and water infrastructures, damage ecosystems and destroy recreation. Unfortunately, these mussels are not the only aquatic invasive species threatening Utah. View other examples at wildlife.utah.gov/habitat/ans. View a complete list in the Utah Aquatic Invasive Species Management Plan.

In 2008, the Utah State Legislature made it illegal to possess or transport invasive mussels. If you have been in an infested water, you must decontaminate your boat and equipment before entering or traveling with it in Utah. Find a decontamination station near you.

Learn about decontaminating your boat
Learn why these mussels are so bad
Learn about your options for decontamination


Why are they dangerous?

Once established, invasive mussels can cost billions of dollars.

Jeopardize power and water infrastructures

Invasive mussels reproduce rapidly and coat any stable surface— including water intake pipes. If these animals establish populations in Utah, our water transport facilities will deliver less water and require additional maintenance (increasing your bill). They may also suffer temporary—but frequent—closures to remove mussels from equipment.

Destroy your favorite recreation areas and equipment

Invasive mussels reproduce so rapidly that their shells carpet beaches. These shells are sharp, so beachgoers will have to wear footwear at all times. The decaying mussels release a putrid smell that clings to the air and water. Finally, the mussels plug water circulation systems on watercraft, overheating motors that are costly to repair.

Cost billions of dollars to control

In the United States, zebra mussels cost the power industry $3.1 billion from 1993–1999, with an impact on industries, businesses, and communities of more than $5 billion¹. If mussels become established in Utah, they are predicted to cost the state $15 million per year in increased costs— potentially driving up tax rates.

¹ New York Sea Grant 1994a

Decontamination certification and other forms

Multiple-use decontamination form
  • Complete the online Mussel-Aware Boater Program and receive a Decontamination Certification Form valid through the end of the calendar year.
Single-launch decontamination form
  • Option A: Download the form online
  • Option B: Obtain the form at a Utah boat ramp
Visitors to Lake Powell
  • Read the latest updates and find answers to common questions
Commercial haulers AIS awareness
  • Take the Commercial Haulers AIS Awareness Program course
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