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Annual Toxics Summary		 ARB's ADAM Air Quality Database
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Chloroform
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
0.01 0.01 * 0.01 0.02 0.004 19 0.02 *
2022
0.01 0.01 0.014 0.02 0.04 0.008 30 0.02 1
2021
0.01 0.01 * 0.02 0.04 0.007 23 0.02 *
2020
0.01 * * * 0.03 0.009 9 0.02 *
2019
0.01 0.01 0.017 0.03 0.05 0.011 30 0.02 1
2018
0.01 0.02 0.022 0.04 0.06 0.012 31 0.02 2
2017
0.01 0.02 0.028 0.04 0.06 0.014 30 0.02 2
2016
0.01 0.03 0.029 0.04 0.13 0.022 31 0.02 2
2015
0.01 0.03 0.030 0.04 0.06 0.011 30 0.02 2
2014
0.01 0.02 0.025 0.04 0.07 0.014 30 0.02 2
2013
0.01 0.02 0.023 0.04 0.05 0.012 31 0.02 2
2012
0.01 0.01 0.018 0.03 0.06 0.013 29 0.02 1
2011
0.01 0.02 0.023 0.04 0.05 0.013 31 0.02 2
2010
0.01 0.02 0.026 0.05 0.07 0.017 29 0.02 2
2009
0.01 0.01 0.020 0.04 0.06 0.014 28 0.02 2
2008
0.01 0.01 0.015 0.03 0.05 0.010 31 0.02 1
2007
0.01 0.01 0.017 0.03 0.06 0.013 29 0.02 1
2006
0.01 0.01 0.019 0.04 0.05 0.012 30 0.02 1
2005
0.01 0.02 0.020 0.04 0.05 0.012 31 0.02 2
2004
0.01 0.02 0.024 0.05 0.08 0.017 30 0.02 2
2003
0.01 0.03 0.036 0.05 0.11 0.019 31 0.02 3
2002
0.01 0.03 * 0.05 0.05 0.012 16 0.02 *
2001
0.01 0.03 0.028 0.05 0.06 0.015 30 0.02 2
2000
0.01 0.04 0.040 0.07 0.10 0.021 28 0.02 3
1999
0.01 0.04 * 0.06 0.11 0.024 20 0.02 *
1998
0.01 0.05 * 0.10 0.14 0.032 25 0.02 *
1997
0.01 0.03 0.030 0.05 0.06 0.014 28 0.02 2
1996
0.01 0.03 0.032 0.05 0.10 0.021 31 0.02 2
1995
0.01 0.02 0.022 0.04 0.06 0.015 29 0.02 2
1994
0.01 0.01 0.017 0.03 0.05 0.012 29 0.02 1
1993
0.01 0.02 * 0.05 0.06 0.017 27 0.02 *
1992
0.01 0.01 0.017 0.03 0.04 0.011 31 0.02 1
1991
0.01 0.02 * 0.05 0.09 0.020 25 0.02 *
1990
0.01 0.01 * 0.03 0.12 0.022 27 0.02 *
1989
0.01 0.03 0.038 0.07 0.09 0.021 23 0.02 3
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.