PUBLIC BATHING BEACH E. COLI BACTERIA LEVELS FOR GENESEE COUNTY LAKES.
September 23, 2005
Contact: Brian
McKenzie, Supervisor
Environmental Health Services
Phone:
810-257-3603
Fax: 810-257-3125
The Genesee County Health Department has lifted the
advisory against total
body contact (swimming) at Mott Lake -- Bluebell Beach as the E. coli
bacteria have returned to background levels.
All monitoring points in Genesee County are in compliance with State guidelines for bacterial concentrations
at bathing beaches.
Significant
rain events, such as experienced yesterday,
Thursday
September, 22 2005
,
can dramatically increase E. coli bacteria levels in lakes and other
surface waters. Therefore, the Genesee County Health Department is
advising any beach patrons exercise due caution with total body
contact in area surface waters.
Exposure to any recreational water can be a potential health risk.
Gastrointestinal and dermatological illnesses have been associated with
recreational water exposure.
Your Genesee County Health Department uses the following rules to
interpret the E. coli test results. (By authority conferred on the
director of public health by section 12544 of Act No. 368 of the Public
Acts of 1978, as amended, being S333.12544 of the Michigan Compiled Laws):
R 325.2102 Sanitation and safety determinations. Rule 2. (1) Bacterial
concentrations in water at a bathing beach, as determined by standard
methods, shall contain not more than 130 Escherichia coli (E. coli) per
100 milliliters, as a 30-day geometric mean. Compliance shall be based on
the geometric mean of all individual samples taken during 5 or more
sampling events representatively spread over a 30-day period. Each
sampling event shall consist of 3 or more samples taken at representative
locations within a designated sampling area. Bathing beach waters shall
not contain more than a maximum of 300 E. coli per 100 milliliters.
Compliance shall be based on the geometric mean of 3 or more samples taken
during the same sampling event at representative locations within a
defined sampling area.
This is our final beach sampling report 2005. Sampling will resume
in early May of 2006.
2005 Bacterial Concentrations of Escherichia coli per 100 milliliters
|
LOCATIONS:
|
*Week
of 5/16
|
*Week
of 5/23
|
*Week
of 5/30
|
*Week
of
6/6
|
*Week
of 6/13
|
*Week
of 6/20
|
*Week
of 6/27
|
*Week
of
7/4
|
*Week
of 7/11
|
*Week
of 7/18
|
*Week
of 7/25
|
*Week
of 8/1
|
*Week
of 8/8
|
*Week
of 8/15
|
*Week
of 8/22
|
*Week
of 8/29
|
*Week
of 9/9
|
*Week
of 9/12
|
*Week
of 9/19
|
**30 Day
Mean
|
|
Buell
Lake
Boat
Ramp
|
3
|
22
|
6
|
11
|
184
|
41
|
17
|
34
|
163
|
6
|
4
|
9
|
15
|
39
|
24
|
8
|
3
|
15
|
15
|
10
|
|
Byram
Lake
Clover
Beach
|
1
|
1
|
20
|
91
|
60
|
17
|
9
|
34
|
30
|
226
|
40
|
48
|
20
|
26
|
3
|
18
|
20
|
5
|
27
|
11
|
|
Covenant
Hill Camp
|
7
|
142
|
2
|
15
|
199
|
9
|
9
|
37
|
7
|
92
|
191
|
10
|
10
|
8
|
15
|
20
|
1
|
4
|
2
|
5
|
|
Copneconic
Camp
|
3
|
2
|
2
|
3
|
2
|
1
|
4
|
3
|
4
|
49
|
17
|
17
|
12
|
4
|
3
|
10
|
7
|
16
|
26
|
9
|
|
Crooked
Lake
|
95
|
7
|
4
|
101
|
33
|
123
|
138
|
47
|
93
|
75
|
206
|
9
|
9
|
6
|
3
|
4
|
4
|
37
|
2
|
5
|
|
Dollar
Lake
|
4
|
55
|
101
|
7
|
229
|
29
|
185
|
38
|
100
|
87
|
85
|
146
|
7
|
289
|
3
|
4
|
4
|
18
|
149
|
10
|
|
Fenton
Lake - DNR Dock
|
1
|
23
|
4
|
3
|
5
|
73
|
37
|
3
|
6
|
10
|
32
|
16
|
6
|
8
|
1
|
6
|
6
|
26
|
2
|
4
|
|
-
Twp. Hall
|
1
|
1
|
2
|
72
|
127
|
28
|
125
|
6
|
3
|
7
|
39
|
14
|
15
|
4
|
2
|
3
|
10
|
24
|
66
|
10
|
|
Hasler
Lake
Campground
|
2
|
2
|
9
|
7
|
16
|
16
|
3
|
5
|
2
|
5
|
86
|
22
|
8
|
7
|
1
|
5
|
5
|
24
|
1
|
4
|
|
Holloway
Reservoir
- Buttercup Beach
|
29
|
248
|
6
|
7
|
49
|
10
|
134
|
11
|
22
|
12
|
102
|
21
|
84
|
45
|
24
|
9
|
2
|
7
|
15
|
8
|
|
-
Walleye Pike
|
27
|
8
|
1
|
11
|
16
|
2
|
2
|
6
|
1
|
5
|
8
|
8
|
22
|
116
|
20
|
9
|
2
|
24
|
6
|
9
|
|
Lake
Linda
|
9
|
26
|
1
|
9
|
30
|
7
|
3
|
3
|
3
|
5
|
113
|
65
|
85
|
98
|
*2419
|
13
|
2
|
23
|
12
|
25
|
|
Lake
Ponemah
|
15
|
41
|
27
|
16
|
10
|
13
|
38
|
4
|
5
|
12
|
28
|
14
|
7
|
13
|
2
|
14
|
10
|
6
|
44
|
10
|
|
Lobdell
Lake
|
5
|
1
|
12
|
2
|
27
|
5
|
8
|
4
|
11
|
5
|
38
|
6
|
8
|
8
|
3
|
10
|
8
|
6
|
3
|
5
|
|
Mott
Lake
- Bluebell
Beach
|
62
|
20
|
9
|
24
|
13
|
60
|
*336
|
18
|
23
|
12
|
56
|
62
|
*310
|
*320
|
160
|
119
|
53
|
70
|
86
|
95
|
|
- Bluegill Boat Ramp
|
12
|
6
|
2
|
2
|
8
|
11
|
3
|
5
|
3
|
7
|
5
|
11
|
15
|
72
|
37
|
6
|
2
|
8
|
12
|
8
|
|
Myers
Lake
|
1
|
3
|
1
|
29
|
73
|
40
|
174
|
5
|
5
|
227
|
46
|
40
|
8
|
5
|
2
|
15
|
5
|
3
|
1
|
4
|
|
Pinewood
Lake
|
1
|
7
|
1
|
8
|
23
|
1
|
1
|
6
|
6
|
12
|
51
|
1
|
1
|
2
|
1
|
6
|
6
|
3
|
N/A
|
3
|
|
Silver
Lake - Marina
|
38
|
2
|
4
|
33
|
57
|
15
|
44
|
7
|
7
|
13
|
32
|
7
|
5
|
7
|
4
|
18
|
3
|
6
|
189
|
12
|
|
-
Beach
|
3
|
3
|
2
|
70
|
56
|
160
|
36
|
3
|
28
|
9
|
46
|
19
|
23
|
83
|
5
|
11
|
24
|
6
|
26
|
12
|
|
West
Sister
Lake
|
3
|
46
|
1
|
1
|
37
|
1
|
94
|
8
|
8
|
83
|
251
|
44
|
264
|
1
|
20
|
21
|
3
|
25
|
5
|
11
|
*
Not to
Exceed
State
guideline of 300 E. coli per 100 ml
** Not to
Exceed
State
guideline of 130 E. coli per 100 ml
|
