Santee-based Olson Irrigation Systems has been acquired by Evoqua Water Technologies, a global company headquartered in Pennsylvania that provides municipal and industrial water and wastewater treatment equipment and services.

Olson Irrigation, which was founded in 1976, designs and produces filters and irrigation components for the agriculture and industrial markets. The company will be folded into Evoqua's Aquatics and Disinfection division, which includes a product line for which Olson Irrigation is a major supplier.

Financial terms of the deal were not disclosed.

The acquisition was the second this week by Evoqua, which announced July 5 it had acquired three companies that specialize in wastewater solutions for industrial and manufacturing applications from ADI Group Inc., a Canada-based firm.

Evoqua was formerly known as Siemens Water Technologies LLC prior to its 2014 acquisition for $872 million from Siemens AG by AEA Investors LP.