Loprest Water Treatment Company was established in 1928 in San Francisco, California. Solving municipal water treatment issues has always been the core of Loprest’s business focus. From conceptual design to system fabrication, through installation and start-up, Loprest offers engineering expertise throughout the project.

Currently located in Rodeo, California, Loprest sits on six acres with a large fabrication facility and division offices. Loprest staff includes design engineers, project engineers and application specialists to support all of our customer requirements. Our UL panel shop can handle all of your system control requirements, from basic PLC schemes to complex SCADA and telemetry operations. With hundreds of installations throughout California and the world, Loprest has provided reliable, durable and cost-effective water treatment solutions for ninety years.

Quality control is a major element to the success and longevity of Loprest. Stringent procedures and inspections ensure only the highest quality systems and components ever reach our customers. All equipment manufactured by Loprest meets local, state and federal design requirements including ASME certification, EPA, DEQ, Ten States Standards and California Department of Public Health approval. Customer commitment does not end with the sale of capital equipment. Loprest provides on-going operator training and system support for the life of the equipment.

Loprest, a division of WRT | 901 W. 116th Avenue, Suite 400 | Westminster, CO 80234 | Phone: 303-424-5355 | Toll free: (888) 228-5982 | ©2019 Loprest, a division of WRT, All rights reserved.