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THE USE OF MODELS FOR GRANTING VARIANCES FROM MANDATORY DISINFECTION OF GROUND WATER USED AS A PUBLIC WATER SUPPLY
Citation:
Yates, M. V. THE USE OF MODELS FOR GRANTING VARIANCES FROM MANDATORY DISINFECTION OF GROUND WATER USED AS A PUBLIC WATER SUPPLY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-90/010 (NTIS 90-186347), 1990.
Impact/Purpose:
Information.
Description:
In November 1985, a Maximum Contaminant Level Goal of zero viruses in drinking water was published. By 1991, the U.S. Environmental Protection Agency Office of Drinking Water to promulgate regulations requiring that all ground water used for potable purposes disinfected prior to distribution instead of requiring monitoring for viruses. The purpose of this document is to discuss the possibility of using a virus transport model for granting variances from this requirement. The current state of knowledge in the area of virus transport is reviewed, and the information needed to model virus transport is critically examined. Two different approaches to modeling virus transport are described, including data requirements, model outputs, and limitations of the model. Finally, several areas in which research needs to be performed in order to use models of virus transport for granting variances from the disinfection requirement are presented.