A blue sign with the word phoslock on it

Restoration of impaired water bodies by the application of Phoslock

"We seek to improve water quality across the globe."

Phoslock Water Solutions (UK) Ltd and Phoslock Europe GmbH are wholly owned subsidiaries of Phoslock Environmental Technologies (PET) of Sydney, Australia.

PET is the manufacturer and intellectual property owner of Phoslock, a geo-engineered phosphorus-binding clay material developed by the Commonwealth Scientific Research Organisation (CSIRO) of Australia, in the nineties. 

"We seek to improve water quality across the globe."

Phoslock Water Solutions (UK) Ltd and Phoslock Europe GmbH are wholly owned subsidiaries of Phoslock Environmental Technologies (PET) of Sydney, Australia.

PET is the manufacturer and intellectual property owner of Phoslock, a geo-engineered phosphorus-binding clay material developed by the Commonwealth Scientific Research Organisation (CSIRO) of Australia, in the nineties. 

A yellow tractor is towing a boat in the water.

What is Phoslock?

Phoslock was developed in Australia by the Commonwealth Scientific and Industrial Research Organisation (CSIRO) to remove phosphates from water. The active element in Phoslock is lanthanum (a rare-earth element) which has a strong affinity to bind with phosphate. 

A large body of water surrounded by trees and mountains on a sunny day.

Case Studies

Phoslock has been successfully applied to over 300 water bodies around the world.

Here you will find a selection of detailed case studies containing descriptions of the projects accompanied by images and videos.

A yellow tractor is towing a boat in the water.

What is Phoslock?

Phoslock was developed in Australia by the Commonwealth Scientific and Industrial Research Organisation (CSIRO) to remove phosphates from water. The active element in Phoslock is lanthanum (a rare-earth element) which has a strong affinity to bind with phosphate. 

A large body of water surrounded by trees and mountains on a sunny day.

Case Studies

Phoslock has been successfully applied to over 300 water bodies around the world.

Here you will find a selection of detailed case studies containing descriptions of the projects accompanied by images and videos.

A yellow tractor is towing a boat in the water.

Useful documents & publications

A series of guidance and help sheets including a list of publications & links

A large body of water surrounded by trees and mountains on a sunny day.

Environmental Certifications

A seal that says tested and validated under industry standards

US and Canadian NSF/ANSI 60 Drinking Water certification

The logo for the chinese research academy of environmental sciences

Chinese Research Academy of Environmental Sciences (CRAES) Certification

A shelf full of binders with one that says ' a ' on it

Useful documents & publications

A series of guidance and help sheets including a list of publications & links

A wooden dock is sitting in the middle of a lake surrounded by trees.

Environmental Certifications

A seal that says tested and validated under industry standards

US and Canadian NSF/ANSI 60 Drinking Water certification

The logo for the chinese research academy of environmental sciences

Chinese Research Academy of Environmental Sciences (CRAES) Certification

A white background with a few lines on it

LATEST NEWS

Bag of PHOSLOCK next to a body of water, with trees and cloudy sky in the background.

Exciting News: Phoslock Relisted on ASX!

by Phoslock Environmental Technologies • 19 August 2025
Phoslock has been relisted on the ASX after a two-year suspension. Discover how the Company’s renewed focus and strategic direction strengthen its role in delivering sustainable water quality solutions.
Water with a blue-green algae bloom. Headline:

New Lake Management Project in Washington State

by Damian Whelan • 17 August 2025
Washington’s Rainbow Lake treated with Phoslock. The phosphorus-binding clay improves water quality, reduces nutrient impacts, and supports safe recreational use.
A man is sitting at a desk using a computer showing a page form the Phoslock website.

Phoslock Launches Phos-Chat: A Digital Leap in Water Body Support

by Damian Whelan • 7 May 2025
Phoslock’s new Phos-Chat tool connects you directly with water quality experts. Share photos, ask questions, and get tailored support for your lake, pond, or wetland—right when it matters most.
Show More News

We have carried out over 300 water treatment projects all over Europe and across the world

For more information about the Phoslock treatment or to start a conversation about treating your lake, reservoir or canal, please get in touch. Where appropriate, we will forward your request to a local licensed distributor.

A blue map of europe on a white background

We have carried out over 300 water treatment projects all over Europe and across the world

For more information about the Phoslock treatment or to start a conversation about treating your lake, reservoir or canal, please get in touch. Where appropriate, we will forward your request to a local licensed distributor.

A blue map of europe on a white background
A white background with a few lines on it