Salinity Management Guide
National Water Research Institute
Southwest Membrane Operator Association
Multi-State Salinity Coalition


AVAILABLE FOR DOWNLOAD! Study to Evaluate Long-Term Trends and Variations in the Average Total Dissolved Solids (TDS) Concentration in Wastewater and Recycled Water.
Partners: Daniel B. Stephens, CDM Smith, Risk Sciences.
Purpose: Evaluate long-term trends for salinity in wastewater and recycled water and assess how periodic droughts and various conservation measures may influence these trends. The investigation will characterize and quantify these relationships based on a series of case studies focused on service areas in southern California. 



Model Water Efficient Landscape Ordinance 1.0 Evapotranspiration Rate Variance Guidance Research 
Partners: NWRI, WateReuse California; University of California, Riverside; Department of Water Resources.
Purpose: Discover and review relevant anecdotal evidence and write narrative analysis and summary focused on the experiences of public agency stakeholders and landscape professionals on how evapotranspiration rate and other variables including, but not limited to soil type and conditions, plant palette, water quality, and intensity of use may affect plant health and other matters relevant to the inquiry as determined by the Research Project Team.

Salt Management Study Update

Partners: Metropolitan Water District of Southern California, US Bureau of Reclamation

Purpose: Update the following: (a) 1998 salinity management action plan; (b) USBR salinity economics impact mode; and (c) Southern California groundwater salt balance determination. Click here for more information.

White Paper on Ocean Brine Disposal

PI: Michael Welch, Consultant

Purpose: Summarize scientific and regulatory issues associated with ocean brine disposal, as well as recommend strategies to ensure the continued use of ocean outfalls as a disposal option for brine.  Seawater, recycled water, and brackish water desalination brines will be considered.

Evaluation of Alternatives to Water Softeners

PI: Peter Fox, Arizona State University

Partners: WateReuse Foundation and County Sanitation Districts of Los Angeles County

Purpose: Develop performance and cost data for the most promising alternative technologies that either soften hard water or reduce the scaling effects of hard water without a net increase of total dissolved solids in wastewater.

Automatic Water Softener Removal Rebate Program

PI:  Craig Proctor, Inland Empire Utilities Agency

Partners:  Inland Empire Utilities Agency, National Water Research Institute, Metropolitan Water District of Southern California

Purpose: Develop a regional education and rebate program for the voluntary removal of residential self-regenerating water softeners in the Chino Basin area.