Genesee County Health Department
Better Life Through Better Health
Date: September 20, 2007
For Immediate Release
Contact: Brian McKenzie, Supervisor
Environmental Health Services
Phone: (810) 257-3603 Fax: (810) 257-3125
E. COLI BACTERIA RESULTS FOR GENESEE COUNTY
LAKES.
The Genesee County Health Department advises against total body contact
(swimming) due to elevated E. coli bacteria
levels at Bluebell Beach on Mott Lake and Buttercup Beach on Holloway
Reservoir; however these public beaches have already closed for the season. All other monitoring points in Genesee County are currently in compliance with
State guidelines for bacterial concentrations at bathing beaches.
Exposure to any recreational water can be a potential health risk.
Gastrointestinal and dermatological illnesses have been associated with
recreational water exposure. Rain and subsequent runoff can dramatically
increase E. coli bacteria levels in lakes and other surface waters.
Therefore, the Genesee County Health Department is advising that all beach
patrons exercise due caution with total body contact in area surface waters
after rain events.
Your Genesee County Health Department utilizes 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 §333.12544 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 for 2007. Sampling will resume in
early May of 2008.
2007 Bacterial
Concentrations of Escherichia coli per 100 milliliters
|
LOCATIONS: |
*Wk of
5/14 |
*Wk of
5/21 |
*Wk of 5/28 |
*Wk
of 6/4 |
*Wk
of 6/11 |
*Wk
of 6/18 |
*Wk
of 6/25 |
*Wk
of 7/2 |
*Wk of 7/9 |
*Wk
of 7/16 |
*Wk
of 7/23 |
*Wk
of 7/30 |
*Wk
of 8/6 |
*Wk
of 8/13 |
*Wk
of 8/20 |
*Wk
of 8/27 |
*Wk of 9/3 |
*Wk
of 9/10 |
*Wk
of 9/17 |
**30
Day Mean |
|
Buell Lake Boat
Ramp |
8 |
2 |
7 |
29 |
3 |
4 |
2 |
7 |
18 |
5 |
39 |
81 |
68 |
60 |
19 |
32 |
13 |
25 |
18 |
21 |
|
Byram Lk. Clover
Beach |
2 |
2 |
6 |
111 |
9 |
23 |
172 |
13 |
13 |
49 |
219 |
250 |
16 |
4 |
50 |
45 |
16 |
7 |
3 |
15 |
|
Covenant Hills
Camp |
7 |
9 |
9 |
63 |
14 |
14 |
16 |
17 |
3 |
4 |
7 |
50 |
3 |
2 |
6 |
11 |
7 |
7 |
1 |
5 |
|
Copneconic Camp
Beach |
4 |
4 |
29 |
2 |
2 |
24 |
21 |
1 |
9 |
4 |
7 |
1 |
5 |
29 |
10 |
7 |
3 |
1 |
1 |
3 |
|
Copneconic Day
Beach |
7 |
1 |
2 |
3 |
2 |
5 |
1 |
1 |
1 |
29 |
19 |
2 |
4 |
1 |
8 |
2 |
1 |
1 |
1 |
2 |
|
Crooked Lake |
14 |
20 |
15 |
61 |
8 |
13 |
62 |
10 |
15 |
23 |
22 |
8 |
15 |
13 |
80 |
11 |
5 |
8 |
6 |
12 |
|
Dollar Lake |
6 |
37 |
4 |
42 |
8 |
18 |
33 |
7 |
249 |
102 |
16 |
268 |
2 |
37 |
7 |
6 |
7 |
8 |
2 |
6 |
|
Lk Fenton Twp
Hall/Beach |
1 |
1 |
1 |
19 |
3 |
5 |
17 |
4 |
12 |
6 |
4 |
3 |
38 |
17 |
11 |
93 |
35 |
9 |
11 |
20 |
|
Hasler Lake
Campground |
7 |
5 |
13 |
8 |
2 |
5 |
2 |
1 |
1 |
1 |
4 |
2 |
2 |
11 |
2 |
5 |
2 |
15 |
2 |
3 |
|
Holloway-Buttercup
Beach |
5 |
5 |
2 |
16 |
1 |
10 |
221 |
2 |
14 |
24 |
6 |
5 |
20 |
24 |
249 |
156 |
*649 |
*885 |
21 |
**290 |
|
Lake Linda |
1 |
1 |
1 |
4 |
9 |
27 |
12 |
154 |
12 |
34 |
22 |
12 |
17 |
11 |
52 |
17 |
11 |
11 |
17 |
40 |
|
Mott Lake -
Bluebell Beach |
19 |
7 |
48 |
11 |
142 |
1 |
135 |
11 |
2 |
92 |
58 |
105 |
*376 |
212 |
*>300 |
64 |
*824 |
*1113 |
8 |
**255 |
|
Myers Lake |
3 |
3 |
6 |
65 |
5 |
2 |
23 |
5 |
11 |
7 |
36 |
4 |
6 |
15 |
60 |
40 |
8 |
3 |
2 |
10 |
|
Pinewood Lake |
1 |
8 |
5 |
146 |
30 |
19 |
7 |
5 |
48 |
6 |
4 |
4 |
2 |
9 |
3 |
6 |
3 |
12 |
53 |
8 |
|
Silver Lake
Beach/City Pk |
10 |
18 |
7 |
44 |
226 |
19 |
20 |
1 |
11 |
115 |
2 |
6 |
4 |
42 |
73 |
5 |
6 |
17 |
closed |
33 |
|
West Sister Lake |
2 |
3 |
19 |
48 |
8 |
2 |
2 |
23 |
4 |
3 |
2 |
7 |
2 |
13 |
5 |
3 |
1 |
5 |
2 |
3 |
* Not to Exceed State guideline
of 300 E. coli per 100 ml
** Not to Exceed State guideline
of 130 E. coli per 100 ml
| 
