WSSC Water Quality Monitoring



Here are the fifth round of results of WSSC's fecal bacteria monitoring tests which are required by the consent decree. One Sligo Creek site had the least (along with 25 other sites) Enterococci bacteria of the 40 tested sites; the other had the third most. These results are from this WSSC report.

March 26, 2008

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). Broad Creek
(downstream-Henson Creek)
<10
(<10)
0%Too few bacteria for non-human bacteria source determination
1). Broad Creek
(upstream-Henson Creek)
<100%Too few bacteria for non-human bacteria source determination
1). Cabin John
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Cabin John
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Indian Creek
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Indian Creek
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Lower Anacostia
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Lower Anacostia
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Muddy Branch
(downstream)
<10
(<10)
0%Too few bacteria for non-human bacteria source determination
1). Muddy Branch
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Northeast Branch
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Northeast Branch
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Oxon Run
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Paint Branch
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Paint Branch
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Parkway
(upstream-Walker Branch)
<100%Too few bacteria for non-human bacteria source determination
1). Piscataway
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Piscataway
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Seneca Creek
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Seneca Creek
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Sligo Creek
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Upper Beaverdam Creek
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Upper Beaverdam Creek
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Watts Branch
(downstream)
<100%Too few bacteria for non-human bacteria source determination
1). Watts Branch
(upstream)
<100%Too few bacteria for non-human bacteria source determination
1). Western Branch
(downstream)
<100%Too few bacteria for non-human bacteria source determination
27). Horsepen
(upstream)
130%31%16%7%18%19% 9%
27). Northwest Branch
(downstream)
130%31%17%11%0%28% 13%
27). Oxon Run
(upstream-Watts Branch)
130%25%9%10%0%44% 12%
30). Lower Beaverdam Creek
(upstream)
150%26%9%5%0%44% 16%
31). Rock Creek
(downstream)
350%37%16%9%0%25% 13%
32). Lower Beaverdam Creek
(downstream)
430%33%7%8%0%38% 14%
33). Parkway
(downstream-Bear Branch)
480%27%15%11%0%36% 11%
33). Rock Creek
(upstream)
480%34%10%21%0%19% 16%
35). Horsepen
(downstream)
600%35%15%6%15%17% 12%
36). Western Branch
(upstream)
700%31%9%15%0%32% 13%
37). Little Falls
(upstream)
780%34%13%6%0%33% 14%
38). Sligo Creek
(upstream)
900%26%19%8%0%29% 18%
39). Little Falls
(downstream)
105
(120)
0%
(0%)
36%
(33%)
9%
(11%)
13%
(16%)
21%
(21%)
21%
(19%)
40). Northwest Branch
(upstream)
2700%33%6%23%0%32% 6%
Numbers in parentheses() are results for field duplicate samples.