AWWA ACE92148

The DBPRAM (Disinfection Byproduct Regulatory Analysis Model) was developed by the EPA's Office of Ground Water and Drinking Water to assist the agency's decision-makers in grappling with the complexities and uncertainties of how the water supply industry may respond to possible rules, and how responses may affect human health risk with respect both to the toxicity of the disinfection byproduct chemicals and to the incidence of waterborne disease due to microbiological contaminants. This paper focuses on three components of the overall DBPRAM model. The first part provides a discussion of the general methodology and assumptions used to create the simulated water supplies. The second part provides specific information on the data used and results obtained for each of the raw water quality and water treatment characteristics simulated. The third section presents a summary of specific data sources used, assumptions employed, and other considerations involved in the selection of values for each of the water quality and treatment variables used to create the 100 simulated SNS water supplies.