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Trichloroethylene
parts per billion
Read About Estimated Risk
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
Estimated
Risk
2023
* * * * * * 0 * *
2022
* * * * * * 0 * *
2021
* * * * * * 0 * *
2020
* * * * * * 0 * *
2019
* * * * * * 0 * *
2018
* * * * * * 0 * *
2017
* * * * * * 0 * *
2016
* * * * * * 0 * *
2015
* * * * * * 0 * *
2014
0.01 0.01 * 0.02 0.07 0.017 15 0.02 *
2013
0.01 0.01 0.021 0.03 0.20 0.036 29 0.02 0.6
2012
0.01 0.01 0.016 0.04 0.07 0.015 29 0.02 0.5
2011
0.01 0.02 0.047 0.07 0.42 0.092 27 0.02 1
2010
0.01 0.01 0.017 0.03 0.06 0.014 29 0.02 0.5
2009
0.01 0.01 0.014 0.02 0.04 0.008 31 0.02 0.4
2008
0.01 0.01 0.018 0.04 0.05 0.012 30 0.02 0.6
2007
0.01 0.02 0.026 0.05 0.10 0.021 29 0.02 0.8
2006
0.01 0.02 0.047 0.07 0.34 0.066 31 0.02 1
2005
0.01 0.04 0.058 0.12 0.18 0.049 29 0.02 2
2004
0.01 0.04 0.040 0.08 0.19 0.037 31 0.02 1
2003
0.01 0.04 * 0.08 0.18 0.037 26 0.02 *
2002
0.01 0.03 0.048 0.09 0.23 0.045 31 0.02 1
2001
0.01 0.04 0.048 0.08 0.17 0.035 30 0.02 1
2000
0.01 0.04 0.049 0.09 0.19 0.037 29 0.02 2
1999
0.01 0.04 * 0.10 0.13 0.037 23 0.02 *
1998
0.01 0.03 0.043 0.07 0.29 0.053 29 0.02 1
1997
0.01 0.02 0.028 0.07 0.09 0.026 29 0.02 0.9
1996
0.01 0.03 0.049 0.06 0.53 0.091 30 0.02 2
1995
0.01 0.05 0.052 0.09 0.10 0.022 31 0.02 2
1994
0.01 0.07 0.078 0.14 0.24 0.057 28 0.02 2
1993
0.01 0.05 0.061 0.09 0.28 0.048 32 0.02 2
1992
0.01 0.10 0.096 0.13 0.15 0.035 30 0.02 3
1991
0.06 0.14 0.260 0.20 4.2 0.754 29 0.02 8
1990
0.08 0.26 0.250 0.40 0.47 0.114 30 0.02 8
1989
0.06 0.25 * 0.43 0.55 0.159 12 0.02 *
Graph It!
Notes Values below the Limit of Detection (LoD) assumed to be ½ LoD.
Means and risks shown only for years with data in all 12 months.
"*" means there was insufficient or no data available to determine the value.