Iron Horse Trail Lake at Iron Horse Beach (Sampling Site 47) |
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 4, 2015 |
No |
5.47 |
1 |
May 11, 2015 |
No |
8.7 |
6 |
May 18, 2015 |
No |
2.74 |
1046 |
May 25, 2015 |
No |
0.54 |
687 |
June 1, 2015 |
No |
8.06 |
19 |
June 8, 2015 |
No |
0 |
111 |
June 15, 2015 |
No |
0 |
57 |
June 22, 2015 |
No |
0 |
45 |
June 29, 2015 |
No |
0 |
91 |
July 6, 2015 |
No |
0 |
3 |
July 13, 2015 |
No |
2.57 |
7 |
July 20, 2015 |
No |
0.55 |
50 |
July 27, 2015 |
No |
6.19 |
6 |
August 3, 2015 |
No |
0.82 |
4 |
August 10, 2015 |
No |
0.2 |
2 |
August 17, 2015 |
No |
1.07 |
0 |
August 24, 2015 |
No |
0 |
261 |
August 31, 2015 |
No |
0.28 |
5 |
September 7, 2015 |
No |
0 |
3 |
September 14, 2015 |
No |
0 |
2 |
September 21, 2015 |
No |
1.84 |
6 |
September 28, 2015 |
No |
5.13 |
0 |