We have the ability and experience to provide design, installation and operational support to a wide range of waste water treatment challenges. This may require a new systems or a retrofit for a conventional wastewater treatment plant.

We first installed tertiary wastewater systems in 2003. Membrane Bioreactor (MBR) systems were introduced to Tobago to prevent increasing marine pollution in the coastal waters of the tourism rich and environmentally sensitive southwest coast of the island.

Ionics Freshwater Limited designed, built and operated two 30,000 gpd MBR plants which were retrofitted conventional wastewater treatment systems. Both systems were handed over to the Water and Sewerage Authority (WASA) of Trinidad and Tobago.


Tobago is a thriving tourist destination located in the southern-most Caribbean. The Tobago House of Assembly was concerned about the performance and impact of the discharge of treated wastewater from two existing conventional domestic sewage treatment plants. The concern was for the local residential community and the marine environment. The major issues of concern were relating to odour, unsightly foaming,  treatment capacity overload and the impact of wastewater discharge on the marine environment, particularly of the Buccoo Reef.

Protecting the Environment in Tobago

  • The Tobago House of Assembly responsibly selected MBR to solve the wastewater issues
  • Ionics Freshwater Limited quickly and cost effectively retrofitted both of the conventional wastewater treatment system with membrane bioreactor (MBR) technology.

The consistent high quality of the effluent from the MBR plants greatly improved protection of the marine environment around the Buccoo reef.  The wastewater is treated to a standard acceptable for non-potable reuse such as re-injection to the aquifer and marine discharge.

Both plants are now operated by the local municipality, The Water and Sewerage Authority (WASA) of Trinidad and Tobago.