| Main Title |
Nonphotosynthetic Pigmented Bacteria in a Potable Water Treatment and Distribution System. |
| Author |
Reasoner, D. J. ;
Blannon, J. C. ;
Geldreich, E. E. ;
Barnick, J. ;
|
| CORP Author |
Environmental Protection Agency, Cincinnati, OH. Drinking Water Research Div. |
| Publisher |
c1989 |
| Year Published |
1989 |
| Report Number |
EPA/600/J-89/355; |
| Stock Number |
PB90-216326 |
| Additional Subjects |
Microbiology ;
Potable water ;
Bacteria ;
Distribution systems ;
Water pollution ;
Municipalities ;
Growth ;
Culture media ;
Seasonal variations ;
Monitoring ;
Temperature ;
Correlation ;
Reprints ;
Standard plate counts ;
Heterophic plate count bacteria
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB90-216326 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
The occurrence of pigmented bacteria in potable water from raw source water through treatment to distribution water, including dead-end locations, was compared at sample sites in a large municipal water system. Media used to enumerate heterotrophic bacteria and differentiate pigmented colonies were standard method plate count (SPC), m-SPC, and R2A agars, incubated up to 7 days at 35C. The predominant pigmented bacteria at most sample locations were yellow and orange, with a small incidence of pink organisms at the flowing distribution site. Seasonal variations were seen, with the yellow and orange organisms shifting in dominance. SPC agar was the lease productive medium for both heterotroph counts and pigmented bacteria differentiation. High levels of pigmented bacteria could pose an increased health risk to immunologically compromised individuals. Therefore, the bacterial quality of the distribution water should be controlled to prevent the development of high concentrations of heterotrophic plate count bacteria, including the pigmented forms. |
| Supplementary Notes |
Pub. in Applied and Environmental Microbiology, v55 n4 Apr 89. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Nonphotosynthetic Pigmented Bacteria in a Potable Water Treatment and Distribution System. |
| Category Codes |
68D; 57K; 50B |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/14 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
019410638 |
| Origin |
NTIS |
| Type |
CAT |
