WELCOME TO PHOSLOCK USA
Phoslock is the proven lake remediation technology trusted worldwide for permanent phosphorus control and long-term ecological recovery.
Now available with dedicated US support and expertise.
Phoslock is a global leader in the treatment and remediation of freshwaters, particularly those impacted by excessive phosphorus pollutions.
Our flagship product, Phoslock® is a unique lake management tool which improves ecological structure and function in waterbodies.
Across the country, lakes, reservoirs, and ponds are struggling with phosphorus pollution leading to harmful algal blooms, declining water clarity, fish kills, odor problems, and rising management costs.
These symptoms indicate eutrophication due to nutrient pollution, particularly when excess phosphorus is identified through water quality monitoring.
Managing external sources of phosphorus is just as crucial as address the phosphorus stored in lake bottom sediments, which can contribute to harmful algal blooms. Treatments that rely solely on alum and calcium to bind phosphorus will eventually release it under high pH and low-oxygen conditions. In contrast, lanthanum permanently binds phosphorus in a mineral form that remains insoluble across a wide range of conditions.
Communities need a long-term, science-backed solution that stops internal phosphorus loading at its source.
Communities need a long-term, science-backed solution that stops internal phosphorus loading at its source.
Phoslock is a global leader in water remediation with more than 25 years of experience. Our patented lanthanum-modified bentonite technology has been applied to more than 500 waterbodies in over 25 countries. It is supported by extensive scientific research and strict regulatory oversight.
Our US team brings unmatched expertise, precise application methods, and a commitment to safety and environmental stewardship.
Our US team brings unmatched expertise, precise application methods, and a commitment to safety and environmental stewardship.
For more than 25 years, Phoslock has been evaluated in laboratories and full-scale lake treatments, with all studies confirming “virtually no” risk to aquatic life and human health. It is the preferred treatment for lakes with trout and other sensitive species. With no change to pH after treatment, you can rest assured that the dosage for your lake or pond is safe.
Its strong safety record makes it a trusted solution for water managers across the United States.
Its strong safety record makes it a trusted solution for water managers across the United States.
To review our SDS and toxicological documentation, use the links below.
Phoslock gives lake managers, municipalities, and private owners confidence that their water resources will be stable, clear, and healthy for years to come.
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