Holmes Lake at North Shore (Sampling Site 19) |
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, 2016 |
No |
0 |
17 |
May 9, 2016 |
No |
0 |
11199 |
May 16, 2016 |
No |
0 |
29 |
May 23, 2016 |
No |
0 |
111 |
May 30, 2016 |
No |
0 |
148 |
June 6, 2016 |
No |
0.3 |
16 |
June 13, 2016 |
No |
0 |
3 |
June 20, 2016 |
No |
2.11 |
179 |
June 27, 2016 |
No |
4.19 |
6 |
July 4, 2016 |
No |
2.91 |
649 |
July 11, 2016 |
No |
2.83 |
41 |
July 18, 2016 |
No |
2.87 |
14 |
July 25, 2016 |
No |
2.99 |
1986 |
August 1, 2016 |
No |
1.71 |
12033 |
August 8, 2016 |
No |
0.97 |
383 |
August 15, 2016 |
No |
0.57 |
387 |
August 22, 2016 |
No |
1.02 |
7 |
August 29, 2016 |
No |
0.26 |
26 |
September 5, 2016 |
No |
0.56 |
21 |
September 12, 2016 |
No |
1.7 |
16 |
September 19, 2016 |
No |
1.86 |
45 |
September 26, 2016 |
No |
0.65 |
80 |