Evoqua Water Technologies has acquired a majority investment in San Diego-based Frontier Water Systems LLC, which develops patented, engineered equipment packages for high-rate treatment and removal of selenium, nitrate and other metals from complex waste streams. The strategic investment follows Evoqua’s strategy to grow its portfolio of advanced wastewater treatment technologies and commit to sustainable solutions.

“We are excited to deepen our partnership with Frontier, as together we help solve the water treatment needs of our customers,” Evoqua CEO Ron Keating said, in a statement. “Evoqua and Frontier have successfully partnered on numerous projects to ensure removal of selenium and other heavy metals from waste streams, giving our customers confidence in complying with strict regulatory limits.”

Headquartered in Pittsburgh, Evoqua provides water and wastewater treatment solutions, offering a broad portfolio of products, services and expertise for its industrial, municipal and recreational customers. The company operates in more than 160 locations across nine countries.