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RECORD NUMBER: 35 OF 55

OLS Field Name OLS Field Data
Main Title Recovery and Diversity of Heterotrophic Bacteria from Chlorinated Drinking Waters.
Author Maki, J. S. ; LaCroix, S. J. ; Hopkins, B. S. ; Staley, J. T. ;
CORP Author Washington Univ., Seattle. Dept. of Microbiology and Immunology.;Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
Year Published 1986
Report Number EPA/600/J-86/165;
Stock Number PB87-114625
Additional Subjects Bacteria ; Potable water ; Reprints ; Water pollution detection ; Drinking water ; Seattle(Washington)
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NTIS  PB87-114625 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/21/1988
Collation 10p
Abstract Heterotrophic bacteria were enumerated from the Seattle drinking water catchment basins and distribution system. The highest bacterial recoveries were obtained by using a very dilute medium containing 0.01% peptone as the primary carbon source. Other factors favoring high recovery were the use of incubation temperatures close to that of the habitat and an extended incubation (28 days or longer provided the highest counts). Total bacterial counts were determined by using acridine orange staining. With one exception, all acridine orange counts in chlorinated samples were lower than those in prechlorinated reservoir water, indicating that chlorination often reduces the number of acridine orange-detectable bacteria. Source waters had higher diversity index values than did samples examined following chlorination and storage in reservoirs. Shannon index values based upon colony morphology were in excess of 4.0 for prechlorinated source waters, whereas the values for final chlorinated tap waters were lower than 2.9.
Supplementary Notes Pub. in Applied and Environmental Microbiology, v51, n5 p1047-1055 May 86. Sponsored by Environmental Protection Agency, Cincinnati, OH. Water Engineering Research Lab.
NTIS Title Notes Journal article.
Title Annotations Reprint: Recovery and Diversity of Heterotrophic Bacteria from Chlorinated Drinking Waters.
PUB Date Free Form c1986
Category Codes 68D; 57K
NTIS Prices PC A02/MF A01
Primary Description 600/14
Document Type NT
Cataloging Source NTIS/MT
Control Number 703715121
Origin NTIS
Type CAT