Phoslock® is a CSIRO developed formulation of bentonite lanthanum.

  • Locks up phosphorus safely and permanently
  • Environmentally friendly – non-toxic to humans, animals, fish and aquatic plants
  • Internationally certified for use in drinking water reservoirs

High concentrations of phosphorus in water bodies lead to quality, health and odour issues.

Phoslock permanently binds phosphate and forms a new inert mineral called rhabdophane which becomes part of the natural lake sediments.

By removing excess phosphate the water quality and amenity are significantly improved.



Interview with City of Rotterdam – Anne Mollema

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