Making Your Waterfront Safe Again

C&D Underwater Maintenance
C&D Underwater Maintenance
  • Home
  • About
  • Diving Division
  • Harvester Division
    • Eco Harvester
    • Contact Harvester Div
    • Aquatic Excavation
    • Suction Harvesting (DASH)
  • Eco Harvester Sales
  • More
    • Home
    • About
    • Diving Division
    • Harvester Division
      • Eco Harvester
      • Contact Harvester Div
      • Aquatic Excavation
      • Suction Harvesting (DASH)
    • Eco Harvester Sales
  • Home
  • About
  • Diving Division
  • Harvester Division
    • Eco Harvester
    • Contact Harvester Div
    • Aquatic Excavation
    • Suction Harvesting (DASH)
  • Eco Harvester Sales

dive services

Aquatic Weed Removal

Pool Leak Detection & Repair

Aquatic Weed Removal

Precision harvesting by hand milfoil seaweed lakeweed pond weed

Keep your waterfront clear and healthy with our aquatic weed removal services. We use advanced techniques and equipment to efficiently remove invasive plants, ensuring a balanced and thriving aquatic ecosystem. 

Benthic Barriers

Pool Leak Detection & Repair

Aquatic Weed Removal

Benthic Barrier Install lake mat lake bottom blanket

 Benthic barriers, or lake mats, are essential for controlling aquatic plant growth. Our team installs these barriers at the start of the season and maintains them throughout the year, removing and storing them properly during the off-season to ensure their longevity and effectiveness. 

Free Estimate

Pool Leak Detection & Repair

Pool Leak Detection & Repair

Anchor & Chain Inspection and Replacement

pool leak detection and repair

  Small leaks in your pool can lead to significant problems if not addressed promptly. Our dive team specializes in detecting and repairing leaks, ensuring your pool remains in top condition and conserving water and chemicals. 

Anchor & Chain Inspection and Replacement

Anchor & Chain Inspection and Replacement

Anchor & Chain Inspection and Replacement

Anchor chain and anchor block inspection and repair.

 Secure your dock and watercraft with our dock chain and anchor replacement services. We assess the condition of your existing equipment and provide high-quality replacements to ensure safety and stability. 

Item Recovery

Anchor & Chain Inspection and Replacement

Marina Harvesting

divers dry suit anchor chain inspection repair replacement

Snow on the ground, ice on the water, no problem. 

Marina Harvesting

Anchor & Chain Inspection and Replacement

Marina Harvesting

lily pad milfoil pond weed lake weed seaweed removal

Harvesting aquatic weeds to ensure you and your family can enjoy your waterfront and your prop remains weed free.

Monthly Service

Water Pump Maintenance

Lift Bag Services

lily pad milfoil removal pond weed lake weed seaweed

Maintaining your waterfront with a monthly service keeps your swim area clear all season long.

Lift Bag Services

Water Pump Maintenance

Lift Bag Services

Lift bag services

Do you need to relocate an anchor block or mooring buoy?  We have the tools and the equipment.

Free Estimate

Water Pump Maintenance

Water Pump Maintenance

Water Pump Maintenance

Is your water pump clogged? No matter the time of year, C&D Underwater Maintenance is here to help.

Before and after

Lily Pads - BEFORE

Lily Pads - BEFORE

Lily Pads - BEFORE

Your not using this lake front!

Lily Pads - AFTER

Lily Pads - BEFORE

Lily Pads - BEFORE

 Harvested lily pads, roots and all. Topped off with benthic barriers to keep your lake front clean all summer long. 

Milfoil & Lilys - BEFORE

Milfoil & Lily Pads - AFTER

Milfoil & Lily Pads - AFTER

Who is getting in the water first?

Milfoil & Lily Pads - AFTER

Milfoil & Lily Pads - AFTER

Milfoil & Lily Pads - AFTER

A complete cleanout of lily pads, milfoil and roots. Topped off with a monthly service to keep your lake front clear all summer long.

Milfoil & Lily Pads

Milfoil & Lily Pads - AFTER

Milfoil & Lily Pads - AFTER

 Monthly service keeping your community swim area clean all summer long.

Milfoil & Lily Pads - AFTER

Milfoil & Lily Pads - AFTER

Milfoil & Lily Pads - AFTER

 Our work can be seen from a satellite!

We tailor our benthic barrier solutions to suit each client

lake bottom blanket

Benefits of Using Benthic Barriers

  •  Eco-Friendly Weed Control: Benthic barriers are an environmentally friendly alternative to chemical treatments, offering a natural way to manage aquatic plant growth.
  • Long-Term Effectiveness: Properly maintained benthic barriers provide long-term control of aquatic weeds and reduce the need for frequent interventions.
  • Preservation of Aquatic Ecosystems: By preventing the overgrowth of invasive plants, benthic barriers help preserve the natural balance of aquatic ecosystems, promoting healthier water quality and biodiversity.

Benthic Barriers

Keeping you swim area weed free all summer long

 Benthic barriers, better known as lake mats, are specifically designed to block sunlight, preventing all aquatic plant growth. The mats are weighted down and secured to the bottom of the lake or pond to prevent vegetation growth. 


We will install mats before weed growth at the beginning of each season and remove them at the end of the season.


In the fall, we remove, rinse, and prep them for winter storage to ensure they remain functional.

Mats come in a variety of sizes to fit your needs. 

Call us, we can discuss the best solution for your lakefront.

benthic barrier aquatic weed control

Contact Us - Diving division

Contact Dave & Carl

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Diving Division

  • Benthic barrier installation 
  • Hull and dock cleaning 
  • Pool leak detection and repair
  • Anchor and chain inspection and replacement
  • Retrieve lost items
  • Monthly waterfront services
  • Drone/UAS Surveying, photography 

Call for Diving Services

Sandy Hook CT 06482

Dave: (203) 739-9234 - admin@cdseaweed.com Carl: (203) 648-3960

  • Drone / UAS Services

C&D Underwater Maintenance

Sandy Hook CT 06482

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