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Underground Stormwater Management Systems

Stormwater management systems can add unexpected costs and delays to urban development projects if not done correctly. Atlantic Civil Products’ custom-designed Buffatank™ systems are turn-key solutions you can depend on.

  • Low material and installation costs
  • Fast and easy to install
  • Available in diameters up to and exceeding 3600 mm for very large storage volumes
  • Complete design flexibility
  • 25 to 100+ year design service life
  • Available in Galvanized, Aluminized Type 2 and Polymer coatings
  • Ideal for detention and retention
  • Full design and engineering support

Buffatank™ systems are custom manufactured from prefabricated Hel-Cor™ modular units that are connected on-site with simple coupling bands. Buffatank™ stores stormwater underground, saving valuable real estate on your project site. Buffatank™ can be placed under lawns, gardens or driveways. Underground storage provides a safer and more aesthetic stormwater storage solution.


Buffatank™ can reduce local and downstream flooding by retaining storm events and releasing water at a controlled rate through an orifice plate.


Buffatank™ can be designed to retain stormwater runoff for later irrigation of parks and gardens — making better use of this valuable resource.

Custom manufactured

Buffatank™ systems are custom manufactured to the requirements of the project. Hel-Cor™ pipe is the system’s principal component. A typical system may include:

  • Access risers
  • Ladders
  • Lock down grate and frames
  • End walls
  • Orifice and litter screen
  • Silt trap
  • Inlet stubs
  • Outlet stubs
  • High Early Discharge (HED) chamber
  • Elbows and manifold units

Buffatank™ systems are manufactured to comply with the design requirements of local government and waterway catchment authorities.


  • Parking lots
  • Shopping centres
  • Residential developments
  • Schools, institutions
  • Golf courses