WSSC Water Quality Monitoring
Here are the twentieth 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.
April 4, 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). Cabin John Creek (upstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 1). Lower Anacostia (upstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 1). Muddy Branch (downstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 1). Piscataway (upstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 1). Rock Creek (upstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 1). Seneca Creek (downstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 1). Upper Beaverdam Creek (upstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 1). Western Branch (downstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 1). Western Branch (upstream) |
<10 | Too few bacteria for bacteria source determination | ||||||
| 10). Paint Branch (downstream) | 22 | 6% qPCR positive for humans |
36% | 8% | 11% | 0% | 26% | 13% |
| 11). Lower Beaverdam Creek (upstream) | 23 | 11% qPCR negative for humans |
37% | 12% | 7% | 0% | 19% | 14% |
| 12). Seneca Creek (upstream) | 24 | 16% qPCR positive for humans |
43% | 8% | 12% | 0% | 13% | 8% |
| 13). Oxon Run (downstream) |
25 | 3% qPCR negative for humans |
34% | 8% | 13% | 0% | 25% | 17% |
| 14). Piscataway (downstream) |
26 | 0% qPCR negative for humans |
42% | 9% | 12% | 0% | 21% | 16% |
| 15). Parkway (upstream - Walker Branch) |
27 | 13% qPCR positive for humans |
33% | 12% | 9% | 3% | 24% | 6% |
| 16). Indian Creek (downstream) |
28 | 9% qPCR negative for humans |
38% | 7% | 8% | 14% | 10% | 14% |
| 17). Broad Creek (upstream - Henson Creek) |
30 | 11% qPCR negative for humans |
43% | 8% | 8% | 0% | 12% | 18% |
| 18). Indian Creek (upstream) |
33 | 0% qPCR negative for humans |
35% | 9% | 14% | 17% | 12% | 13% |
| 19). Northeast Branch (upstream) |
40 | 0% qPCR negative for humans |
30% | 7% | 11% | 0% | 27% | 25% |
| 19). Upper Beaverdam Creek (downstream) |
40 | 0% qPCR negative for humans |
33% | 11% | 15% | 0% | 22% | 19% |
| 21). Watts Branch (upstream) |
41 | 0% qPCR negative for humans |
31% | 10% | 12% | 0% | 27% | 20% |
| 22). Cabin John Creek (downstream) |
43 | 21% qPCR positve for humans |
32% | 6% | 6% | 3% | 20% | 12% |
| 23). Northeast Branch (downstream) |
45 | 0% qPCR negative for humans |
34% | 12% | 15% | 0% | 22% | 17% |
| 23). Northwest Branch (upstream) |
45 | 0% qPCR negative for humans |
42% | 11% | 9% | 2% | 21% | 15% |
| 25). Lower Anacostia (downstream) |
52 | 7% qPCR negative for humans |
45% | 45% | 9% | 0% | 21% | 9% |
| 26). Northwest Branch (downstream) |
53 | 3% qPCR negative for humans |
36% | 9% | 9% | 0% | 26% | 17% |
| 27). Horsepen (upstream) |
57 | 6% qPCR negative for humans |
29% | 9% | 12% | 17% | 16% | 11% |
| 28). Lower Beaverdam Creek (downstream) |
58 | 4% qPCR negative for humans |
43% | 4% | 10% | 0% | 22% | 17% |
| 29). Muddy Branch (upstream) |
63 | 2% qPCR negative for humans |
44% | 13% | 15% | 2% | 15% | 9% |
| 30). Paint Branch (upstream) |
67 | 0% qPCR negative for humans |
31% | 11% | 16% | 0% | 25% | 17% |
| 31). Watts Branch (downstream) |
68 | 0% qPCR negative for humans |
35% | 8% | 11% | 0% | 25% | 21% |
| 32). Parkway (downstream - Bear Branch) |
78 (40) | 11% (15%) qPCR positive for humans |
31% (33%) | 9% (6%) | 10% (7%) | 0% (0%) | 28% (22%) | 11% (17%) |
| 33). Sligo Creek (upstream) |
83 | 0% qPCR negative for humans |
36% | 14% | 13% | 0% | 25% | 12% |
| 34). Rock Creek (downstream) |
98 | 0% qPCR negative for humans |
36% | 5% | 18% | 0% | 26% | 15% |
| 35). Sligo Creek (downstream) |
102 (137) | 28% (25%) qPCR positive for humans |
30% (32%) | 11% (8%) | 9% (7%) | 0% (0%) | 15% (12%) | 7% (16%) |
| 36). Little Falls (upstream) |
120 | 20% qPCR positive for humans |
33% | 6% | 11% | 0% | 25% | 5% |
| 37). Little Falls (downstream) |
195 | 14% qPCR negative for humans |
30% | 8% | 12% | 1% | 27% | 8% |
| 38). Broad Creek (downstream - Henson Creek) |
272 | 8% qPCR negative for humans |
41% | 11% | 7% | 0% | 19% | 14% |
| 39). Horsepen (downstream) |
290 | 22% qPCR positive for humans |
31% | 8% | 9% | 10% | 13% | 7% |
| 40). Oxon Run (upstream-Watts Branch) |
770 | 29% qPCR positive for humans |
21% | 8% | 12% | 0% | 17% | 13% |
Numbers in parentheses() are results for field duplicate samples.