| 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)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB87-114625 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| 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 |
