WSSC Water Quality Monitoring



Here are the 15th 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 12, 2010

The Maryland state standards for Enterococci bacteria:
All Areas: 33
Frequent Full Body Contact Recreation:61
Moderately Frequent Full Body Contact Recreation:78
Occasional Frequent Full Body Contact Recreation:107
Infrequent Full Body Contact Recreation:151
All numbers are counts per 100 milliliters
Stream SiteFecal Bacteria Results
Enterococcus CFU/100mL
Bacterial Source Testing
HumanAvianCanineDeerHorseMiscellaneous WildlifeNon-human Unknown
1). Rock Creek
(upstream)
534%29%12%11%15%29%
2). Northeast Branch
(downstream)
550%30%8%7%28%27%
3). Upper Beaverdam Creek
(downstream)
7012%23%7%12%19%27%
4). Lower Anacostia
(downstream)
880%42%6%11%21%20%
5). Lower Anacostia
(upstream)
1053%36%12%8%15%26%
6). Broad Creek
(downstream - Henson Creek)
1536%33%12%13%13%23%
7). Northeast Branch
(upstream)
1930%24%10%14%23%29%
7). Piscataway
(upstream)
193
(201)
4%
(3%)
27%
(26%)
5%
(6%)
9%
(10%)
24%
(23%)
31%
(32%)
9). Cabin John Creek
(upstream)
2032%32%9%11%18%28%
10). Sligo Creek
(downstream)
21315%26%14%0%20% 25%
11). Western Branch
(downstream)
21524%19%6%9%14%28%
12). Cabin John Creek
(downstream)
2173%33%12%2%26%24%
13). Broad Creek
(upstream - Henson Creek)
2187%32%11%14%16%20%
13). Northwest Branch
(downstream)
2183%33%7%6%23%28%
15). Paint Branch
(downstream)
2400%26%7%14%5%21%27%
16). Indian Creek
(downstream)
2630%30%9%12%26%23%
17). Western Branch
(upstream)
310
(318)
20%
(21%)
18%
(18%)
7%
(6%)
4%
(5%)
17%
(16%)
34%
(34%)
18). Sligo Creek
(upstream)
32311%29%13%0%18% 29%
19). Piscataway
(downstream)
32512%23%6%11%22%26%
20). Paint Branch
(upstream)
3280%28%11%9%0%30%22%
21). Seneca Creek
(downstream)
36314%22%6%8%9%17%24%
22). Upper Beaverdam Creek
(upstream)
39317%25%9%8%18%23%
23). Little Falls
(downstream)
41512%23%14%10%17%24%
24). Lower Beaverdam Creek
(downstream)
4509%23%10%9%23%26%
25). Oxon Run
(downstream)
4907%22%9%8%26%28%
26). Watts Branch
(downstream)
50014%20%9%12%0%20%25%
27). Muddy Branch
(downstream)
540
(525)
0%
(0%)
32%
(31%)
4%
(6%)
9%
(8%)
4%
(4%)
23%
(22%)
28%
(29%)
28). Horsepen
(upstream)
5486%28%10%9%11%21%15%
29). Little Falls
(upstream)
560
(570)
5%
(4%)
29%
(30%)
11%
(10%)
6%
(6%)
23%
(23%)
26%
(27%)
30). Watts Branch
(upstream)
5786%22%11%11%3%18%29%
31). Lower Beaverdam Creek
(upstream)
59524%21%7%10%21%17%
32). Muddy Branch
(upstream)
6256%24%3%11%0%21%35%
33). Parkway
(upstream - Walker Branch)
703
(695)
16%
(17%)
24%
(25%)
9%
(8%)
13%
(12%)
22%
(23%)
16%
(15%)
34). Rock Creek
(downstream)
74019%26%7%8%18%22%
35). Seneca Creek
(upstream)
97521%20%3%4%7%15%30%
36). Parkway
(downstream - Bear Branch)
139531%19%8%10%20%12%
37). Oxon Run
(upstream-Watts Branch)
148323%19%10%7%24%17%
38). Horsepen
(downstream)
167521%19%6%13%10%17%14%
39). Indian Creek
(upstream)
17156%25%10%9%23%27%
40). Northwest Branch
(upstream)
644021%27%11%8%21%12%
Numbers in parentheses() are results for field duplicate samples.