Zebra mussels (Dreissena polymorpha) are fingernail-sized freshwater mussels which are highly invasive, with females laying one million eggs. They form dense colonies which cling to almost any surface, damaging boats, ruining beaches and clogging water pipes. Clean, drain and dry your watercraft to keep invasive mussels out of BC!

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Dave Britton, USFWS

The Invasive Species Council of BC has undertaken a pilot project designed to support BC’s freshwater sustainability through the prevention of the introduction of aquatic invasive species, particularly invasive Zebra and Quagga mussels.

Over a three-year term from 2019 – 2021, funded by the Department of Fisheries and Oceans and under contract to the Canadian Council on Invasive Species, ISCBC is developing resources, signage and a social and digital media campaign.

We are partnering with aquatic stewardship groups throughout the province to pilot newly designed Clean Drain Dry (CDD) signs at waterfront locations and welcome interested organizations to submit an application to be a partner. Approved partners will be required to obtain approval for the posting of waterfront signs from the appropriate jurisdiction. Approved CDD Signage Partners will be asked to complete a formal Partnership Agreement.


The main responsibilities of being a partner are:

  • Determining the appropriate location(s) for signage where there is no current clean drain dry signage already in place,
  • Obtaining permission from the appropriate jurisdictions for sign installation
  • Installing the signs provided
  • Completing the final Signage Report using a template we will provide

The signs are provided to approved partners free of charge.

Partners are expected to cover the costs of installing the signs and ensuring that the installation (e.g., wooden posts vs. metal, distance from the shoreline etc.) adheres to the rules and regulations of the site jurisdiction.

The signs are currently being professionally designed with input from key stakeholders. Examples of the draft signs can be provided to potential partners by email.

You can apply for a variety of signs at different sites where there are no existing Clean Drain Dry signs.

The allocation of signs will be determined following the application deadline and the review of all applications. Partners and signage quantities will be determined from all submitted applications based on priority lakes, signage needs, number of applicants, and ensuring distribution across high priority sites.

Partners will be selected from all submitted applications based on criteria which include:

  • Site priority i.e. higher risk locations
  • Signage needs
  • Number of applicants

We anticipate signage will be distributed to partners in spring 2020 for the 2020 season.

Yes. As new resources are designed (e.g., rack cards, decals, etc.), ISCBC will supply resources free of cost to approved partners to distribute to their members or to the public.


The following organizations across BC are CDD Pilot Signage Partners:

  • Alberni Clayoquot Regional District  
  • BC Parks
  • Bednesti/Berman Community Association  
  • Capital Regional District
  • Central Kootenay Invasive Species Society
  • Christina Lake Stewardship Society
  • City of Campbell River
  • City of Port Moody 
  • City of Prince George
  • City of Richmond
  • City of Williams Lake 
  • Coal Harbour Marina
  • Coastal Invasive Species Council
  • Columbia Shuswap Invasive Species Society
  • Cultus Lake Aquatic Stewardship Strategy
  • District of Mission
  • District of Sicamous
  • District of Tumbler Ridge 
  • East Kootenay Invasive Species Council
  • Fisheries and Oceans Canada
  • Fraser Basin Council Society / Shuswap Watershed Council
  • Fraser Valley Invasive Species Society
  • Freshwater Fisheries Society of BC
  • Friends of Kootenay Lake Stewardship Society
  • Friends of Tod Creek Watershed
  • Green Lake Area Ratepayers Association
  • Heffley Lake Community Association
  • Hollyburn Sailing Club
  • Jimsmith Lake Community Association
  • Kelowna Yacht Club
  • Lac Le Jeune Conservation Association
  • Ladysmith Maritime Society
  • Lake Country Sail & Paddle
  • Lake Errock Community Association
  • Lake Windermere Ambassadors
  • Lakelse Watershed Stewards Society
  • Lakeshore Resort & Campground
  • Lazy Lake Environmental Association
  • Lillooet Regional Invasive Species Society
  • Lions Gate Marina
  • Little River Boatworld
  • McGrath Contracting Ltd.
  • Metro Vancouver Regional District
  • Ministry of Forests, Lands, Natural Resources Operations and Rural Development
  • Moberly Lake Community Association
  • Municipality of North Cowichan
  • Nature Trust BC
  • Nechako Environment and Water Stewardship Society – NEWSS
  • Nelson Paddling Club 
  • Norman lake community association
  • Osoyoos Cottages Marina Committee
  • Parks Canada 
  • Rosen Lake Ratepayers Association
  • Royal Victoria Yacht Club
  • Seymour Lake Conservation Society 
  • Shawnigan Basin Society
  • Sproat Lake Community Association
  • Spruce City Wildlife Association
  • Squamish Harbour Authority
  • Tl’azt’en Nation 
  • Township of Langley 
  • Upper Nicola Indian Band
  • Vancouver Fraser Port Authority
  • Village of Harrison Hot Springs
  • Wasa Lake Land Improvement District
  • Woodbury Resort

Become a Partner

Complete the following form to apply to be a CDD BC Pilot Signage Partner for the 2021 season.  A member of the ISCBC team will be in contact regarding the status of your application.

Complete the following form to apply to be a CDD BC Pilot Signage Partner for the 2021 season. A member of the ISCBC team will be in contact regarding the status of your application.

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