Branched Oak Lake at Area 10 Beach (Sampling Site 5a) |
The table below shows the most recent sampling information
for toxic algae (Microcystin)
and bacteria (E.coli)
,
Samples are typically collected on Monday and posted on the
web site on Thursday or Friday.
On the table below, the level to trigger a toxic
algae Health Alert is 20 parts per billion
for the toxin Microcystin. Health Alerts stay in
effect until the level stays below 20 ppb for
two consecutive weeks |
|
In the Bacteria (E.coli) column, a single sample
of 235 counts (or higher) per 100 ml
is considered a higher risk for illness through
ingestion |
.
Week Starting |
Weekly Health Alert |
Level of Microcystin (ppb) |
E. coli (# per 100 ml) |
May 2, 2011 |
No |
0.03 |
7 |
May 9, 2011 |
No |
0.07 |
1 |
May 16, 2011 |
No |
0.07 |
4 |
May 23, 2011 |
No |
.03 |
214 |
May 30, 2011 |
No |
0.06 |
105 |
June 6, 2011 |
No |
.07 |
23 |
June 13, 2011 |
No |
0.09 |
15 |
June 20, 2011 |
No |
2.23 |
20 |
June 27, 2011 |
No |
0.51 |
50 |
July 4, 2011 |
No |
0.52 |
16 |
July 11, 2011 |
No |
0.21 |
16 |
July 18, 2011 |
No |
3.65 |
137 |
July 25, 2011 |
No |
2.39 |
39 |
August 1, 2011 |
No |
1.89 |
10 |
August 8, 2011 |
No |
3.58 |
214 |
August 15, 2011 |
No |
2.81 |
86 |
August 22, 2011 |
No |
4.85 |
66 |
August 29, 2011 |
No |
3.24 |
281 |
September 5, 2011 |
No |
3.53 |
8 |
September 12, 2011 |
No |
3.52 |
5 |
September 19, 2011 |
No |
1.88 |
11 |
September 26, 2011 |
No |
0.90 |
16 |