This paper discusses a methodology that has been developed to construct a pathogen budget for
drinking water watersheds, taking into consideration pathogen origin,
deposition, inactivation and movement within a watershed. These processes
can be described in terms of "stocks" (pathogens) and "flows" (movement of
stocks). In South-Eastern Australia, the majority of pathogen loads into major
tributaries occurs during rainfall events so in-stream resuspension may not be
important. In contrast, during dry weather the transit time within the studied
watershed was sufficiently long such that in-stream processes became
important. Total pathogen unit (TPU) budgets were constructed for the
parasitic protozoans Cryptosporidium and Giardia. This approach not only
enables water utility managers to identify those watershed segments that are
contributing the greatest load of pathogens, but also where management
options should be most effective. With improved knowledge of pathogen
ecology this approach can be further refined to provide budgets of infectious
pathogen units (IPU).
Includes 2 references, table, figure.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 250 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 6 |
| Published : | 09/22/2002 |
