Pittsburgh-based Evoqua Water Technologies has bought ADI Systems, Lange Containment and Geomembrane Technologies from ADI Group Inc. of Fredericton for an undisclosed price.

In a statement released Wednesday, Evoqua said the three businesses are world leaders in wastewater solutions for industrial and manufacturing applications, primarily based in Fredericton.

Founded in 1989, ADI has about 100 employees. It will become a part of Evoqua’s Integrated Equipment Technologies segment within its Industrial Division.

The ADI businesses offer a wide range of technologies tailored to their customer base around the world in anaerobic digestion, aerobic treatment, and biogas treatment. They also provide green energy recovery and water reuse technologies as well as industrial wastewater cover liners and containment systems. Combined, ADI Systems and Lange Containment based in Fredericton, and Geomembrane Technologies based in Denver, Colorado have more than 260 customers in 35 countries.

“The combination of ADI with Evoqua, including our recently acquired Environmental Treatment Systems business, gives us the widest-ranging industrial wastewater offerings to help our customers succeed,” said Evoqua CEO Ron Keating in the statement.

Evoqua helps municipalities and industrial customers protect and improve the world's most fundamental natural resource: water. Its cost-effective and reliable treatment systems and services ensure uninterrupted quantity and quality of water, enable regulatory and environmental compliance, increase efficiency through water reuse, and prepare customers for next-generation demands.

The company was created in 2014 when New York private equity fund AEA Investors bought Siemens Water Technologies LLC.

Evoqua says its portfolio of brands, advanced technologies, mobile and emergency water supply solutions and service helps cities across the world provide and discharge clean water, and enable leisure and commercial industry to maximize productivity and profitability.