Industrial wastewater, stormwater, and effluent from water treatment facilities can be reused creatively to irrigate parks, open spaces, golf courses, and certain kinds of crops by using natural treatment systems. Natural treatment systems are a cost effective and environmentally friendly way to provide water treatment. Natural treatment projects involve the application of wastewater to land, development of natural treatment wetlands, and using hybrid poplar forests for both root zone treatment and plant uptake. Furthermore, natural infiltration can be beneficial for aquifer recharge, depending on the quality of the water.

Selection of the most suitable natural treatment approach depends on a number of factors including type and volume of waste/process water, soil characteristics, site setting and hydrogeology, land availability, proximity to wells and other sensitive receptors, proximity to potential users of the water, and infrastructure.

GSI’s staff are experienced in conducting the various phases associated with land application and natural treatment programs including feasibility studies, pilot project implementation, and full scale development. We have experience assisting municipalities and industrial water users in assessing the opportunities and challenges associated with natural treatment of waste or process water. Services we provide our clients include conceptual plan development, permitting, site characterization, and monitoring plan development. Our staff also provides the necessary support during program operation.

Recently, one of the projects GSI staff worked on won an Oregon Association of Clean Water Agencies Award. Congratulations to the Roseburg Urban Sanitary District.

Featured land application and natural treatment projects:


Land Application Monitoring Program


Landfill Leachate Management Program