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MBLR Water Sampling Results: E. coli
For graphs of this data, go here.
For map of sample sites, go here.
Water Quality Test: Membrane filtration (mTEC medium + urea
method)
L = Little River Estuary, M = Merriland River, BB = Branch
Brook, TNTC = too numerous to count, n.d. = no data
Decimal figures are sometimes presented because two dilutions
were run and averaged, or a plate was counted twice for quality control and
the results were averaged.
E. coli results reported as CFU/100mL (colony forming units per 100mL of sample water)
|
site
|
3-Dec-02
|
10-Dec-02
|
17-Dec-02
|
14-Jan-03
|
4-Feb-03
|
19-Feb-03
|
23-Feb-03
|
25-Feb-03
|
18-Mar-03
|
21-Mar-03
|
25-Mar-03
|
1-Apr-03
|
8-Apr-03
|
12-Apr-03
|
27-Apr-03
|
29-Apr-03
|
6-May-03
|
13-May-03
|
20-May-03
|
25-May-03
|
27-May-03
|
average
|
geomean
|
|
L1
|
0.0
|
3.3
|
1
|
3
|
6
|
1
|
0
|
10
|
9
|
10
|
46
|
6
|
10
|
26
|
34
|
> 400
|
11.0
|
7.6
|
|||||
|
L4
|
5.8
|
140
|
12
|
6
|
36
|
13
|
3
|
3.3
|
126
|
57
|
4
|
48
|
24
|
108
|
130
|
47.7
|
21.9
|
||||||
|
L6
|
12.5
|
3.0
|
18
|
0
|
1
|
5
|
1
|
12
|
27
|
13
|
8
|
84
|
90
|
12
|
12
|
75
|
4
|
156
|
700
|
64.9
|
14.9
|
||
|
M1
|
7.3
|
6.4
|
216.5
|
9
|
5
|
1
|
9
|
17
|
4
|
135
|
31
|
8.3
|
5
|
94
|
20
|
26
|
93
|
78
|
194
|
730
|
84.5
|
23.4
|
|
|
M2
|
9.1
|
2.0
|
184
|
6
|
4
|
2
|
3
|
23
|
7.5
|
2.5
|
17
|
42
|
46
|
38
|
228
|
280
|
55.9
|
15.9
|
|||||
|
M3
|
5.8
|
6.0
|
186
|
1
|
4
|
10
|
4
|
42
|
18.3
|
11.7
|
5
|
110
|
12
|
28
|
48
|
20
|
336
|
400
|
69.3
|
19.8
|
|||
|
M4
|
9.2
|
3.0
|
159
|
2.5
|
5
|
37
|
14
|
4
|
52
|
15
|
15.0
|
8.3
|
16
|
6
|
78
|
16
|
98
|
1000
|
85.4
|
19.2
|
|||
|
M5
|
7.5
|
3.0
|
207
|
6
|
51
|
0
|
5
|
22
|
25
|
44
|
39
|
15.8
|
8
|
185
|
28
|
12
|
208
|
20
|
36
|
190
|
55.6
|
25.9
|
|
|
M6
|
3.3
|
4.2
|
139
|
1
|
6
|
0
|
5
|
13.5
|
160
|
375
|
105
|
22.5
|
17.5
|
14
|
14
|
186
|
12
|
390
|
780
|
118.3
|
28.3
|
||
|
M7
|
49.0
|
5.8
|
159
|
2
|
3
|
9
|
4
|
76
|
455
|
91.7
|
17.5
|
15.8
|
60
|
96
|
18
|
8
|
82
|
50
|
114
|
310
|
81.3
|
31.7
|
|
|
BB1
|
13.3
|
0.0
|
14
|
5
|
4
|
2
|
37
|
8
|
16
|
9
|
12
|
36
|
136
|
10
|
258
|
820
|
86.3
|
19.3
|
|||||
|
BB2
|
10.8
|
5.0
|
5.5
|
0.5
|
8.8
|
2
|
4
|
1.5
|
64
|
9
|
11
|
4
|
62
|
12
|
14
|
70
|
16
|
488
|
820
|
84.6
|
13.2
|
||
|
BB3
|
15.8
|
6.7
|
12
|
1
|
3
|
4
|
1
|
0
|
23
|
43
|
4
|
15
|
6
|
12
|
40
|
20
|
24
|
372
|
490
|
57.5
|
12.5
|
||
|
BB4
|
39.0
|
8.2
|
35
|
3
|
3
|
6
|
19
|
25
|
5
|
4
|
1
|
25
|
0
|
22
|
18
|
26
|
90
|
124
|
25.2
|
12.5
|
|||
|
BB5
|
10.8
|
14.2
|
10
|
0
|
1
|
4
|
0
|
1
|
0
|
5
|
7
|
19
|
21.7
|
10
|
92
|
64
|
89
|
90
|
160
|
31.5
|
12.0
|
||
|
CF1
|
63.5
|
0.8
|
10
|
0
|
2
|
6
|
22
|
9.5
|
4
|
0
|
6
|
6
|
9
|
44
|
28
|
14.1
|
6.9
|
To learn more or to volunteer, contact us:
Fred Dillon or
Cayce Dalton at
Wells National Estuarine Research Reserve
Phone: 207-646-1555, ext. 103
Fax: 207-646-2930
