No algal blooms since MPC-Buoy deployment in 2015

5 in 5 years

EPM is running 5 projects with LG Sonic


Operational costs for filters & pumps


Ultrasound waves for specific algal groups

Control of (cyanobacterial) algal blooms

Eight MPC-Buoy systems were installed to control and monitor algal blooms in a drinking water reservoir of EPM (Empresas Públicas de Medellín) in Medellin, Colombia. The reservoir is the main drinking water source of the City of Medellin. Since installation in May 2015, the systems have been in continuous operation.

The primary objective of the project was to reduce and control (cyanobacterial) algal blooms, and to improve the quality of the water that enters the water treatment plant. Secondary objectives of the project were to use the reservoir to its maximum, to save operational costs for pumps and filters.

Given the scale of the project, the best technical and economic solution was to install eight ultrasonic systems spread over the entire reservoir. The MPC-Buoy system provides a complete and environmentally friendly solution to control algae in large water surface. Solar energy powers the systems and operate remotely, which results in low operational costs.

La Fe reservoir in Colombia uses MPC-Buoy to control algal blooms.

Since the installation of the systems, algal blooms have been controlled effectively, even in the extreme environmental conditions of ‘’El Nino’’ in 2015-2016. The interactive algae control systems allowed to adjust the treatment for a high dynamic and fast-growing algal population. The treatment costs decreased.

“The algae and cyanobacteria control has been an excellent investment. We achieved by means of an environmentally friendly technology to improve the water quality and decrease the treatment costs, furthermore we have today a monitoring and control which is more adjusted to the behaviour of our reservoir”.

Santiago Barrera, Technical Operations Manager


Project details

Location Medellín, Colombia Industry Drinking water Client Empresas Públicas de Medellín
  • Since 2015 the reservoir remains free of algal blooms
  • Significant improvements in water quality
  • Reduced operational costs

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Applied product

LG Sonic developed the MPC-Buoy specifically for larger water surfaces such as cooling reservoirs and drinking water reservoirs.


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