This powerpoint presentation begins by providing a brief overview of solving water quality problems in Texas, tracking fecal pollution, total maximum daily loads (TMDLs) and bacterial source tracking (BST), and targeting E. coli.
Specific study objectives include:
determine human and animal sources of
E. coli fecal pollution of watersheds;
develop publicly available BST libraries;
evaluate method precision and accuracy; compare BST methods; and,
provide a foundation for future BST studies. The experimental approach included the following: E. coli isolation from samples using the same
media for compliance water monitoring; U.S. Environmental Protection Agency (USEPA) Method 1603 - modified mTEC medium;
confirmation of ß-D-glucuronidase activity of
isolates using NA-MUG; and,
no broth enrichment or clinical media, avoid
selecting different populations of E. coli. Presentation conclusions indicate the following: four-method composite data set had the
highest accuracy;
two-method composites better than any
single method - ERIC-RP or ERIC-ARA; moderate accuracy and confidence in
results - need to improve; and,
Lake Waco and Belton Lake, wildlife leading
pollution source (~40%), while cattle were
~20%. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 3.3 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 48 |
| Published : | 11/01/2008 |
