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 3, 2010 |
No |
0.1 |
68 |
May 10, 2010 |
No |
0.14 |
86 |
May 17, 2010 |
No |
0.13 |
44 |
May 24, 2010 |
No |
0.31 |
142 |
May 31, 2010 |
No |
0.11 |
4 |
June 7, 2010 |
No |
0.47 |
11 |
June 14, 2010 |
No |
0.46 |
5 |
June 21, 2010 |
No |
5.25 |
205 |
June 28, 2010 |
No |
0.4 |
21 |
July 5, 2010 |
No |
4.31 |
166 |
July 12, 2010 |
No |
1.71 |
|
July 19, 2010 |
No |
0.7 |
40 |
July 26, 2010 |
No |
0.44 |
10 |
August 2, 2010 |
No |
3.66 |
3 |
August 9, 2010 |
No |
2.77 |
1 |
August 16, 2010 |
No |
11.9 |
1 |
August 23, 2010 |
No |
1.18 |
4 |
August 30, 2010 |
No |
0.67 |
0 |
September 6, 2010 |
No |
0.17 |
1 |
September 13, 2010 |
No |
4.25 |
1 |
September 20, 2010 |
No |
0 |
4 |
September 27, 2010 |
|
1.59 |
21 |