Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Characterizing Surface Waters That May Not Require Filtration.
Author Geldreich, E. E. ; Goodrich, J. A. ; Clark, R. M. ;
CORP Author Environmental Protection Agency, Cincinnati, OH. Risk Reduction Engineering Lab.
Publisher cDec 90
Year Published 1990
Report Number EPA/600/J-90/408;
Stock Number PB91-171637
Additional Subjects Surface waters ; Water treatment ; Disinfection ; Water pollution ; Standards ; Watershed management ; Water quality management ; Water supply ; Turbidity ; Filtration ; Monitoring ; Guidelines ; Coliform bacteria ; Color ; Chlorine ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB91-171637 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/04/1991
Collation 14p
A relatively clean raw surface water can be determined that is amenable to disinfection as the only controlling treatment process. The essential criteria and associated standards are: Fecal coliform 20 organisms/100 mL, turbidity 1.0 NTU, color 15 ACU, and chlorine demand 2 mg/L. These criteria were selected from a study of a variety of data gathered from 34 raw source waters used by utilities in full scale application of disinfection as the only treatment process. Selection of water characteristics was based on the potential for impact on disinfection effectiveness and magnitude of fecal pollution tolerated. Watershed management is an essential aspect of controlling water quality fluctuations and in preventing progressive deterioration in the raw water resource. Monitoring data should not only be utilized to form a continual historical record that demonstrates water quality suitability for minimal treatment but also as an integral part of guidance in making day to day changes in process control to avoid any chance for microbial penetration into the public water supply.