Ostara Nutrient Recovery Technologies Inc.

Ostara Nutrient Recovery Technologies Inc.

Ostara Nutrient Recovery Technologies Inc. is commercializing proprietary technologies that recover resources from wastewater and recycle them into valuable products. Ostara`s lead technology platform, developed at the University of British Columbia, 1) recovers polluting nutrients, such as phosphorus and ammonia, from sewage sludge liquids that would otherwise be released into the environment, 2) helps wastewater treatment plants reduce operating costs and increase throughput capacity, and 3) provides municipalities and companies with revenue from the sale of the recovered pollutants that are recycled into environmentally safe slow-release fertilizer, under the product name Crystal Green.

Company details

690 – 1199 West Pender Street , Vancouver , British Columbia V6E 2R1 Canada
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Business Type:
Industry Type:
Water and Wastewater
Market Focus:
Internationally (various countries)


Vancouver-based Ostara helps protect precious water resources by changing the way cities around the world manage excess nutrients both in wastewater streams and due to fertilizer runoff. The company’s nutrient management solutions recover otherwise polluting nutrients, phosphorus and nitrogen, from municipal and industrial water streams, and transforms them into a continuous-release, eco-friendly fertilizer marketed as Crystal Green®.

The process helps wastewater treatment plants reduce nutrient management costs, meet increasingly stringent discharge limits and improve operating reliability, while Crystal Green’s innovative Root-Activated™ mode-of-action improves crop yield and performance, while reducing the risk of nutrient leaching and runoff.


Phosphorus is fundamental to life. Managed responsibly it helps grow the crops we need to feed a growing planet. Unmanaged, excess phosphorus can cause algae to grow and bloom in waterways resulting in toxic conditions that destroy aquatic life and limiting recreational enjoyment and the lifeblood of the fishing industry.


Ostara’s nutrient recovery solutions help transform wastewater treatment plants to resource recovery facilities, closing the loop on a broken cycle. In addition to the cost benefit of recovering nuisance struvite, the solution helps protect local waterways from nutrient pollution at a time when clean water, food security, fertilizer runoff, and growing populations are issues for communities around the globe.