• Comprehensive Perimeter Drainage Inspections in the Cowichan Valley

    Inspections Starting at Only $289*


  • Revitalizing Foundations: Repair and Waterproofing Solutions

    Providing the best waterproofing system tailored to the weather in the Cowichan Valley


  • Extensive Drainage Solutions

    Providing trusted quality in the Cowichan Valley for over 10 years!


  • Rainwater Harvesting

    Put our weather to work for you. Think bigger than just rain barrels.


We are continually raising the bar when it comes to quality workmanship that stands the test of time, and will get the job done on time and on budget.

Book An Assessment Today



Our courteous and well-informed staff is renowned for their exceptional service. We dedicate the necessary time to ensure the task is executed correctly, always accompanied by a cheerful demeanor. Our team consistently goes the extra mile to provide customers with a delightful and satisfying experience.



We manage every aspect on your behalf, including acquiring permits, excavation, and even the restoration of landscaping and pathways. Our team of experts handles all the intricacies, alleviating you from the hassle of coordinating multiple contractors.



With years of expertise in drain cleaning, drain repairs, waterproofing, and addressing wet basements in Nanaimo, Victoria and Cowichan Valley. We emphasize a comprehensive approach. This ensures timely and budget-friendly completion of projects, while maintaining a superior level of quality that withstands the test of time.

  • "I chose Wet Coast Drainage because they offered a very competitive price. Before the job they took all the necessary measures to make sure all the unaffected areas were protected. Trevor made sure I was kept up to date on the crews progress as well as making sure the tenants parking needs were looked after. After the job was complete the grounds were left in the best possible condition. I would highly recommend this company, the quoted price was still the quoted price in the end, no surprises and everything was done to code. "

    Raj Sundher
  • "Trevor and his team at Wet Coast replaced our drain tiles this spring. They were quick (1 week as scheduled), on budget, and tidy. Really happy with the crew who worked around our place; they took care not to damage anything and put stuff back as it was before."

    Daryl Harrison

We’re Cowichan Valley's Best for Flooded Basements, Waterproofing Drain Cleaning and Inspections

Our highly trained staff are proficient at diagnosing and resolving clogged drains, leaky and wet basement issues in Duncan, Mill Bay, Cobble Hill Shawnigan Lake and the entire Cowichan Valley. We ensure your home stays dry and protected for a lifetime. Explore our core services, or talk to us about an assessment today.

Our team of drainage technicians consists of skilled professionals who are well-versed in addressing and rectifying perimeter drain concerns, unstable foundations, leaky basements, cracked driveways, and clogged drains. You can rely on our accurate problem diagnosis and expert recommendations tailored to your circumstances. As a trusted member of the BBB, we prioritize spending time with our customers at the project's outset to ensure meticulous execution. Our pride in our work is evident as we take the time to elucidate the services you're receiving and clarify our workmanship guarantee.

Book An Assessment Today