Cabot Preserve Weekly Sampling Results

Weekly sampling results from the distribution system at Cabot Preserve in Bedford, which obtains all of its water supply from Merrimack Village District.  Units are parts-per-trillion.

Date PFOA PFOS
1/23/18  16.3 2.3
1/16/18  19 1.89
1/08/18  18.3 1.98
1/02/18  13.7 2.24
12/27/17  15 2
12/19/17  17.6 <1.72
12/11/17 16.4 2
12/04/17 20.7 2.42
11/28/17 21.9 2.45
11/21/17 21.5 2.54
11/13/17 21.4 1.99
11/7/17 20.6 2.51
11/1/17 21.1 2.14
10/24/17 20.9 2.46
10/17/17 19.8 <1.85
10/10/17 21.6 2.66
10/3/17 16.9 2.05
9/26/17 19.3 2.05
9/20/17 13.6 2.21
9/12/17 15.5 2.16
9/5/17 15.3 1.86
8/29/17 14.6 2.05
8/22/17 14.4 <1.92
8/15/17 17.6 2.29
8/8/17 17.6 <1.92
8/1/17 20.2 2.65
7/25/17 19.7 2.39
7/18/17 17.8 2.66
7/11/17 (DUP) 17.4 2.28
7/11/17 17.4 <5
7/6/17 17.9 <5
6/27/2017 19 <5
6/20/17 21 4
6/13/17 11 <4
6/6/17 13 <4
6/1/17 13 <4
5/25/2017 14 <4
5/16/2017 16 <4
5/9/2017 17 <4
5/2/2017 18 <4
4/27/2017 17 <4
4/17/2017 14 <4
4/11/2017 13 <4
4/4/2017 11 <4
3/28/2017 12 <4
3/21/2017 12 <4
3/7/2017 11 <4
2/28/2017 12 <4
2/21/2017 11 <4
2/16/2017 12 <4
2/7/2017 15 <4
1/31/2017 16 <4
1/24/2017 16 <4
1/17/2017 16 <4
1/10/2017 16 <4
1/3/2017 18 <4
12/27/2016 19 <4
12/20/2016 3 <4
12/13/2016 18 <4
12/6/2016 15 <4
11/29/2016 16 <4
11/22/2016 16 <4
11/15/2016 24 <4
11/9/2016 20 <4
11/1/2016 21 <4
10/25/2016 19 <4
10/19/2016 21 <4
10/12/2016 18 <4
10/4/2016 16 <4
9/27/2016 19 <4
9/20/2016 15 <4
9/13/2016 14 <4
9/6/2016 17 <4
8/30/2016 13 <4
8/23/2016 17 <4
8/16/2016 15 <4
8/9/2016 15 <4
8/2/2016 16 <4
7/26/2016 14 <4
7/12/2016 13 <4
7/5/2016 10 <4
6/28/2016 11 <4
6/21/2016 12 <4
6/15/2016 9 <4
6/2/2016 12 <4
5/25/2016 12 <4
5/16/2016 11 <4
5/11/2016 11 <4
5/3/2016 14 <4
4/26/2016 38 <4
4/13/2016 52 8.1
4/6/2016 6.2 <5
3/16/2016 36 <4