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

Two white bags, one with blue crisscross design, other with Phoslock product label.

Phoslock® manufacturing set to resume, strengthening supply for European projects

by Damian Whelan • 3 December 2025
Phoslock® confirms manufacturing will restart at the Changxing facility in early 2026 following refurbishment works. The decision supports future supply into Europe as inventories normalise and demand for phosphorus management solutions continues across lake and reservoir projects during 2026 programmes.
Man operating a blue and yellow aquatic weed harvester on a lake, spraying water.

Advancing Phosphorus Management in Freshwater Systems

by Damian Whelan • 30 November 2025
Aquatic Solutions UK has introduced a new tool to support precise placement of lanthanum-modified clay in freshwater projects. The system strengthens dose control, improves distribution, and helps teams deliver well-documented phosphorus-management work across a wide range of site conditions.
Conference poster: UK & Ireland Lakes Network, Killarney, Oct 14-15, 2025. Theme: Irish lakes past, present & future.

Phoslock Water Solutions UK Sponsors UK & Ireland Lakes Network Conference 2025

by Phoslock Water Solutions UK • 1 October 2025
Phoslock EU is proud to sponsor the UK & Ireland Lakes Network Conference 2025 in Killarney. Join Damian Whelan and our team to explore sustainable phosphorus management and long-term strategies for improving freshwater quality.
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