Auckland Utility
New Zealand Drinking water

Reduced blue-green algae counts in New Zealand

Reducing blue-green algae counts

In the Lower Nihotupu Dam in Auckland, New Zealand, five solar-powered algae control systems are controlling blue-green algae blooms. The project started in December 2016 and it proved to be a great success. The algae counts have significantly decreased over the summer, as compared to the previous year.

Project summary

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LG Sonic technology is safe for fish and plants

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Real-time water quality data


User-friendly water quality software


The water utility’s main objective was to reduce blue-green algae counts in a dam used as a water supply. During summer, algae blooms can cause damage and increase the process costs of the water.

Ultrasound technology

The ultrasound technology combines real-time water quality monitoring and is a cost-effective solution for controlling harmful blooms. LG Sonic’s unique ultrasound is the long-term solution for maintaining a healthy aquatic ecosystem. It’s chemical-free, and has been proven safe for humans, plants, animals, and other aquatic life.


Since installing the MPC-Buoy in December 2016, the project became a great success. Algae counts dramatically decreased during summer, as compared to the previous year.

The real-time water quality data continuously predicts future algae blooms, allowing the utility to control their growth before they become a problem.

[This case study is based on the article ‘Sound waves kill algae in Auckland lake’’ written by Simon Smith and published at Stuff Environment.]


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

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External links

Sound waves kill algae in Auckland lake

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Underwater sonic blasting hero

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