Scottsdale Water Treatment Plant   MIB and Geosmin Data ND= none detectable NS= No sample. Sample was either lost or broken. * = Low Surrogate    # = High Surrogate

Date MIB (ng/L) Geosmin (ng/L) MIB (ng/L)
Glendale Lab
Split of sample
Geosmin (ng/L)
Glendale Lab
Split of sample
6/30/98 ND 37.7#
6/16/98 2.6 5.5*
5/27/98 6.8 4.4
3/27/98 ND ND*
2/24/98 ND ND ND 2.1
1/15/98 ND ND ND ND
12/17/97 ND ND 3.6 4.9
11/17/97 2 2 4.2 2.5
10/29/97 ND ND 6.8 3.4
10/15/97 2 6 6.8 5.1*
9/29/97 ND 33 6.9 6.5*
9/10/97 7 ND
8/27/97 ND ND ND ND
8/14/97 3 ND 7.7 ND
7/31/97 ND ND ND ND
7/15/97 3 ND 2.6 ND
7/1/97 Not Sampled Not Sampled Not Sampled Not Sampled
6/17/97 ND ND ND ND
6/3/97 1 ND 2.9 ND
5/20/97 1 ND ND ND
5/8/97 ND ND <2.0 <2.0
4/8/97 ND ND <2.0 <2.0
3/6/97 ND ND
2/4/97 ND ND
1/7/97 ND ND
12/11/96 ND ND
12/4/96 13 ND
11/20/96 ND ND
11/12/96 ND ND
11/6/96 ND ND
10/22/96 13 ND
10/9/96 NS NS
9/19/96 ND ND
9/4/96 ND ND
8/17/96 NS NS
7/5/96 ND 1