Clean Water Services, Ostara to unveil $4.75M water-treatment plant

Washington County's Clean Water Services — the utility that manages waste for more than 536,000 tri-county residents — has joined forces for a second time with British Columbia's Ostara Nutrient Recovery Technologies Inc. This time the pair built the world’s largest municipal facility dedicated to making fertilizer from water waste.

The $4.75 million facility in Rock Creek will extract approximately 1,200 tons of phosphorus from wastewater annually to produce a high-end fertilizer branded as Crystal Green. The facility officially opens officially Tuesday morning with a keynote speech from Robert F. Kennedy, Jr., an Ostara board member...