Rockford Lake at SW Beach (Sampling Site 36) |
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 |
0 |
11 |
May 11, 2015 |
No |
0 |
91 |
May 18, 2015 |
No |
0 |
82 |
May 25, 2015 |
No |
0.24 |
7 |
June 1, 2015 |
No |
1.25 |
2 |
June 8, 2015 |
No |
0 |
49 |
June 15, 2015 |
No |
0 |
47 |
June 22, 2015 |
No |
0 |
54 |
June 29, 2015 |
No |
0 |
13 |
July 6, 2015 |
No |
0 |
9 |
July 13, 2015 |
No |
2.34 |
4 |
July 20, 2015 |
No |
11.1 |
96 |
July 27, 2015 |
No |
0 |
17 |
August 3, 2015 |
No |
16.31 |
0 |
August 10, 2015 |
No |
8.57 |
0 |
August 17, 2015 |
No |
2.5 |
0 |
August 24, 2015 |
No |
4.55 |
0 |
August 31, 2015 |
No |
0 |
0 |
September 7, 2015 |
No |
2.37 |
1 |
September 14, 2015 |
No |
12.88 |
1 |
September 21, 2015 |
Yes |
24.15 |
0 |
September 28, 2015 |
Yes |
21.28 |
1 |