For questions about the King County  Swimming Beach Monitoring Program, please contact Dean Wilson, Program Manager

For questions about the Swimming Beach Web site, please contact Daniel Smith

Idylwood Beach

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Sample DateFecal ColiformTemperature (C)Temperature (F)
9/22/20092721.070.0
9/15/2009121.070.0
9/8/2009821.070.0
8/31/20097223.073.0
8/25/2009422.072.0
8/18/20094315.059.0
8/11/2009423.073.0
8/4/20092526.079.0
7/28/20091424.075.0
7/21/2009522.072.0
7/14/2009 21.070.0
7/7/2009221.070.0
6/29/2009119.066.0
6/23/20093319.066.0
6/15/2009122.072.0
6/9/20091321.070.0
6/2/20095220.068.0
5/26/20091317.063.0
5/18/2009415.059.0
5/12/2009514.057.0
Fecal Coliform Geometric Mean
9
10
13
17
12
12
7
5
5
3
4
4
7
12
8
11
-99
-99
-99
-99

Table Legend

Cell Color Fecal Coliform Value Concern Level
Individual value < 200 CFU/100 ml Low Concern
Individual value > 200 & < 1000 CFU/100 ml Moderate Concern
Individual value > 1000 CFU/100 ml
or geometric mean > 200 CFU/100 ml		 High Concern


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Updated: 9/22/2009