WSSC Water Quality Monitoring
Here is the twenty-first round of results of WSSC's fecal bacteria monitoring tests which are required by the consent decree. Many sites had high Enterococci bacteria counts this time. These results are from this WSSC report.
October 18, 2012 |
The Maryland state standards for Enterococci bacteria:
|
| Stream Site | Fecal Bacteria Results Enterococcus CFU/100mL | Bacterial Source Testing | ||||||
|---|---|---|---|---|---|---|---|---|
| Human | Avian | Canine | Deer | Horse | Miscellaneous Wildlife | Non-human Unknown | ||
| 1). Northwest Branch (downstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 2). Northeast Branch (downstream) |
20 | 0% qPCR negative for humans |
36% | 15% | 11% | 0% | 20% | 18% |
| 3). Rock Creek (upstream) |
35 | 0% qPCR negative for humans |
31% | 12% | 11% | 0% | 25% | 21% |
| 4). Northeast Branch (upstream) |
42 | 0% qPCR negative for humans |
39% | 12% | 8% | 0% | 25% | 16% |
| 5). Lower Anacostia (downstream) |
50 | 0% qPCR negative for humans |
41% | 8% | 12% | 0% | 17% | 22% |
| 6). Indian Creek (downstream) |
63 | 0% qPCR negative for humans |
28% | 9% | 6% | 12% | 23% | 22% |
| 7). Cabin John Creek (upstream) |
73 | 6% qPCR negative for humans |
39% | 7% | 11% | 0% | 19% | 18% |
| 8). Piscataway (downstream) |
87 | 0% qPCR negative for humans |
33% | 9% | 15% | 0% | 22% | 21% |
| 9). Lower Anacostia (upstream) |
95 (101) | 2% (3%) qPCR negative for humans |
37% (34%) | 10% (11%) | 11% (9%) | 0% (0%) | 21% (23%) | 19% (20%) |
| 10). Broad Creek (upstream - Henson Creek) |
97 | 0% qPCR negative for humans |
38% | 10% | 8% | 0% | 21% | 23% |
| 10). Paint Branch (downstream) |
97 | 0% qPCR negative for humans |
34% | 16% | 10% | 0% | 19% | 21% |
| 12). Piscataway (upstream) |
102 | 0% qPCR negative for humans |
35 | 11% | 9% | 0% | 26% | 19% |
| 13). Western Branch (downstream) |
107 | 9% qPCR negative for humans |
31 | 9% | 7% | 0% | 21% | 23% |
| 14). Oxon Run (downstream) |
108 | 5% qPCR negative for humans |
34% | 12% | 9% | 0% | 21% | 19% |
| 15). Lower Beaverdam Creek (downstream) |
110 | 9% qPCR negative for humans |
30% | 8% | 10% | 0% | 26% | 17% |
| 16). Cabin John Creek (downstream) |
117 | 9% qPCR negative for humans |
33% | 11% | 6% | 0% | 21% | 20% |
| 17). Paint Branch (upstream) |
122 | 0% qPCR negative for humans |
31% | 12% | 13% | 0% | 24% | 20% |
| 18). Broad Creek (downstream - Henson Creek) |
123 | 0% qPCR negative for humans |
41% | 9% | 10% | 0% | 23% | 17% |
| 19). Horsepen (upstream) |
153 | 5% qPCR negative for humans |
31% | 10% | 6% | 11% | 21% | 16% |
| 20). Sligo Creek (upstream) |
162 | 6% qPCR negative for humans |
35% | 11% | 7% | 0% | 25% | 16% |
| 20). Western Branch (upstream) |
162 (137) | 15% (10%) qPCR positive for humans |
29% (31%) | 11% (8%) | 8% (7%) | 0% (0%) | 23% (23%) | 14% (21%) |
| 22). Seneca Creek (downstream) |
175 | 14% qPCR positive for humans |
29% | 11% | 6% | 0% | 23% | 17% |
| 23). Little Falls (downstream) |
185 (170) | 3% (4%) qPCR negative for humans |
34% (31%) | 12% (13%) | 11% (11%) | 0% (0%) | 19% (20%) | 21% (21%) |
| 23). Lower Beaverdam Creek (upstream) | 185 | 16% qPCR positive for humans |
27% | 10% | 8% | 0% | 19% | 20% |
| 25). Upper Beaverdam Creek (upstream) |
195 | 13% qPCR positive for humans |
27% | 8% | 13% | 0% | 17% | 22% |
| 26). Upper Beaverdam Creek (downstream) |
210 | 21% qPCR positive for humans |
28% | 10% | 6% | 0% | 20% | 15% |
| 27). Muddy Branch (upstream) |
240 | 7% qPCR negative for humans |
34% | 12% | 13% | 0% | 13% | 21% |
| 28). Watts Branch (downstream) |
270 | 16% qPCR positive for humans |
25% | 13% | 10% | 0% | 19% | 17% |
| 29). Sligo Creek (downstream) |
273 | 17% qPCR positve for humans |
33% | 9% | 4% | 0% | 20% | 17% |
| 30). Seneca Creek (upstream) | 287 | 20% qPCR positive for humans |
33% | 10% | 7% | 0% | 17% | 13% |
| 31). Rock Creek (downstream) |
290 | 7% qPCR negative for humans |
34% | 11% | 8% | 0% | 23% | 17% |
| 32). Northwest Branch (upstream) |
305 | 8% qPCR negative for humans |
27% | 12% | 11% | 0% | 27% | 15% |
| 33). Watts Branch (upstream) |
310 | 11% qPCR positive for humans |
27% | 8% | 12% | 0% | 24% | 18% |
| 34). Little Falls (upstream) |
317 | 9% qPCR negative for humans |
31% | 9% | 12% | 0% | 21% | 18% |
| 35). Muddy Branch (downstream) |
332 | 0% qPCR negative for humans |
36% | 12% | 10% | 0% | 23% | 19% |
| 36). Indian Creek (upstream) |
385 | 4% qPCR negative for humans |
26% | 11% | 9% | 11% | 22% | 17% |
| 37). Parkway (downstream - Bear Branch) |
482 | 19% qPCR positive for humans |
23% | 4% | 9% | 0% | 23% | 17% |
| 38). Parkway (upstream - Walker Branch) |
547 | 16% qPCR positive for humans |
31% | 3% | 11% | 0% | 19% | 20% |
| 39). Horsepen (downstream) |
800 | 18% qPCR positive for humans |
26% | 7% | 11% | 9% | 15% | 14% |
| 40). Oxon Run (upstream-Watts Branch) |
1467 | 24% qPCR positive for humans |
38% | 10% | 6% | 0% | 11% | 11% |
Numbers in parentheses() are results for field duplicate samples.