WSI International
WSI International
Wastewater Treatment and Equipment
WSI Wastewater Treatment Plant
WSI Digester Tanks for Wastewater Plant
MBBR Tanks for Wastewater Treatment Plant

Design-Build Wastewater Treatment Systems

WSI International offers design-build systems made for the municipality, land developer, or community site. Whether small or extensive wastewater treatment facilities, our plants are phased to accommodate all budgets while ensuring compliance with both local and regional regulations.

A leader in Moving Bed Biofilm Reactor (MBBR) technology, Dissolved Air Flotation (DAF) and Aerobic Sludge Digestion, we tap into our 30 years of manufacturing experience to deliver plants that meet/exceed strict discharge standards.


WSI is a leader in Moving Bed Biofilm Reactor (MBBR) technology, Dissolved Air Flotation (DAF) and Aerobic Sludge Digestion. Our plants require minimum operational oversight that will meet or exceed strict discharge standards.

Customer Loyalty

WSI has high customer loyalty, we've worked with the same customers for over 20 years and WSI provides the best technical support in the industry.


With over 30 years of manufacturing experience, WSI International can
deliver superior packaged plants at a fraction of the cost. WSI plants
can withstand the most demanding environments.


Our highly trained engineering team has expert experience in every aspect of plant design, including process, mechanical, electrical, controls and programming.

Typical Design-Build Plant

Design-Build WWTP
Design-Build Plant
BCR Tanks
BCR Tanks
BCR and DAF Systems
BCR Tanks and DAFs
Control Building
Control Building
DAF System
DAF System
Design-Build Remote Controller

Remote Controls

Access your wastewater system from anywhere in the world using a mobile device, computer, or tablet. Adjust settings on the fly or gather analytics for compliance, the possibilities are endless with our remote access technology.

About WSI

WSI International is a group of engineers committed to coming up with reliable and efficient Wastewater Treatment Systems designed to meet your industry’s wastewater treatment demands.

A provider of innovative systems, we have been designing industrial and municipal wastewater treatment plants and wastewater equipment for over 30 years. This years of experience and commitment to excellence has seen us become a go-to provider of the most reliable treatment plants around the world.

All wastewater treatment plants we build are made from the finest of stainless-steel material. This means you can be confident of superior quality that meets both local and regional standards without compromising on efficiency and durability.

Currently maintaining over 80 plants around the world, our staff are fully equipped with the needed expertise to tackle any wastewater project across different industries. 

Whether it’s a wastewater system in Oil &Gas, Food & Beverage, Industrial Pre-Treatment, or Municipal industries, we have the right team to deliver optimal results.