Oliver Lake at North Beach (Sampling Site 33) |
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 6, 2013 |
No |
0 |
33 |
May 13, 2013 |
|
|
5 |
May 20, 2013 |
No |
0 |
19 |
May 27, 2013 |
No |
0.06 |
197 |
June 3, 2013 |
No |
0 |
3 |
June 10, 2013 |
No |
0.05 |
44 |
June 17, 2013 |
No |
0.01 |
11 |
June 24, 2013 |
No |
0.02 |
72 |
July 1, 2013 |
No |
0 |
56 |
July 8, 2013 |
No |
0.19 |
51 |
July 15, 2013 |
No |
0.41 |
156 |
July 22, 2013 |
No |
0.03 |
108 |
July 29, 2013 |
No |
0.17 |
1046 |
August 5, 2013 |
No |
0.25 |
223 |
August 12, 2013 |
No |
0.08 |
2419 |
August 19, 2013 |
No |
0.11 |
2419 |
August 26, 2013 |
No |
0 |
31 |
September 2, 2013 |
No |
0.18 |
2 |
September 9, 2013 |
|
|
4 |
September 16, 2013 |
No |
0 |
22 |
September 23, 2013 |
No |
0 |
579 |
September 30, 2013 |
|
|
2 |