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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 * *
2013
* * * * * * 0 * *
2012
0.01 * * * 0.01 0.002 1 0.02 *
2011
0.01 0.01 0.010 0.01 0.02 0.002 30 0.02 0.3
2010
0.01 0.01 0.010 0.01 0.01 0.000 30 0.02 0.3
2009
0.01 0.01 0.010 0.01 0.01 0.000 32 0.02 0.3
2008
0.01 0.01 0.010 0.01 0.01 0.000 31 0.02 0.3
2007
0.01 0.01 0.010 0.01 0.01 0.000 29 0.02 0.3
2006
0.01 0.01 0.010 0.01 0.01 0.000 31 0.02 0.3
2005
0.01 0.01 0.011 0.01 0.04 0.005 34 0.02 0.3
2004
0.01 0.01 0.011 0.01 0.03 0.004 30 0.02 0.3
2003
0.01 0.01 0.011 0.01 0.03 0.004 31 0.02 0.3
2002
0.01 0.01 0.013 0.02 0.04 0.007 31 0.02 0.4
2001
0.01 0.01 0.012 0.01 0.04 0.007 30 0.02 0.4
2000
0.01 0.01 0.021 0.04 0.07 0.016 30 0.02 0.6
1999
0.01 0.01 * 0.04 0.08 0.019 19 0.02 *
1998
0.01 0.01 * 0.04 0.07 0.018 15 0.02 *
1997
0.01 0.01 0.016 0.01 0.16 0.028 29 0.02 0.5
1996
0.01 0.01 0.013 0.02 0.06 0.011 31 0.02 0.4
1995
0.01 0.01 0.013 0.02 0.03 0.006 30 0.02 0.4
1994
0.01 0.01 0.014 0.01 0.08 0.013 31 0.02 0.4
1993
0.01 0.01 0.014 0.03 0.07 0.013 30 0.02 0.4
1992
0.01 0.04 0.041 0.06 0.13 0.023 30 0.02 1
1991
0.01 0.03 0.031 0.05 0.09 0.019 29 0.02 0.9
1990
0.01 0.07 * 0.13 0.21 0.050 24 0.02 *
1989
* * * * * * 0 * *
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.