WSI, LLC WSI International, LLC is a multidisciplinary engineering firm that provides cost effective solutions to complex environmental problems. WSI provides a varied product offering for water and wastewater treatment including design/build, packaged plants, design engineering, and management. With over 35 years of direct experience in the water and wastewater treatment field, WSI personnel are dedicated to providing sound engineering solutions to clients while minimizing overall project costs with quality exceeding the most extreme expectations. |
