Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Validity of Fecal Coliforms, Total Coliforms, and Fecal Streptococci as Indicators of Viruses in Chlorinated Primary Sewage Effluents.
Author Berg, Gerald ; Dahling, Daniel R. ; Brown, Gerald A. ; Berman, Donald ;
CORP Author Environmental Monitoring and Support Lab.-Cincinnati, OH. Biological Methods Branch.
Year Published 1978
Report Number EPA-600/J-78-175 ;EMSL-189;
Stock Number PB81-126468
Additional Subjects Disinfection ; Indicator species ; Viruses ; Coliform bacteria ; Streptococcus ; Validity ; Chlorination ; Water pollution ; Microorganisms ; Reprints ; Bioindicators ; Sewage treatment effluents
Library Call Number Additional Info Location Last
NTIS  PB81-126468 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 7p
Quantities of combined chlorine that usually destroyed more than 99.999% of the indigenous fecal coliforms, total coliforms, and fecal streptococci in primary sewage effluents destroyed only 85 to 99% of the indigenous viruses present. Viruses were recovered from five of eight chlorinated primary effluents from which fecal coliforms were not recovered by standard most-probable-number procedures. The limited volumes of such chlorinated effluents that can be tested for indicator bacteria with currently available multiple-tube and membrane filter technics restrict the value of fecal coliforms, fecal streptococci, and even total coliforms as indicators of viruses in these effluents. Although fecal coliforms and fecal streptococci are useful indicators of viruses in effluents from which these bacteria are recovered, the absence of these bacteria and even total coliforms from disinfected effluents (in standard tests) does not assure that viruses are also absent.