Town of Emmitsburg
Town of Emmitsburg
United States Drinking water

Saving money and water with MPC-Buoy

Control algae problems

A floating solar powered algae control system was installed in Emmitsburg (US) to control algae in a reservoir that provides drinking water to approximately 3,000 people. The MPC-Buoy system, installed in April 2017, succeeds in controlling algae, reducing chemical costs and water usage.

Project summary


People depend on this water supply


Access to real-time water quality data


Ultrasound waves for specific algal groups

Rainbow Lake
Rainbow Lake
Rainbow Lake
Rainbow Lake

The main objective of the project was to reduce algae problems, especially during the summer months, with secondary objectives to reduce chemicals costs, decrease backwashes, and clogged filters. The town has been facing high algae growth during summer, resulting in double water consumption, which was needed for backwashing algae and dirt out of the plant’s system.

A MPC-Buoy system was installed to control the long-term algae problem in Rainbow Lake. The MPC-Buoy combines real-time water quality monitoring and ultrasonic sound waves to provide a complete and environmentally friendly algae solution in large water surfaces.

Saved money and water

Since the installation of the ultrasound units, the algae control system has proven itself. Costs are reduced significantly, overall chemical costs decreased by 27% in 2017, the water quality improved, overtime at the water plant was reduced by 31 percent, and backwash water usage decreased over the year.

“The device performed excellently when dealing with blue-green algae“.

Cathy Willets, Emmitsburg Town Manager


All-in-one solution for controlling algae in drinking water reservoirs.

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