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Benzene
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
2024
* * * * * * 0 * *
2023
* * * * * * 0 * *
2022
* * * * * * 0 * *
2021
* * * * * * 0 * *
2020
* * * * * * 0 * *
2019
* * * * * * 0 * *
2018
* * * * * * 0 * *
2017
* * * * * * 0 * *
2016
* * * * * * 0 * *
2015
* * * * * * 0 * *
2014
* * * * * * 0 * *
2013
* * * * * * 0 * *
2012
* * * * * * 0 * *
2011
* * * * * * 0 * *
2010
* * * * * * 0 * *
2009
* * * * * * 0 * *
2008
* * * * * * 0 * *
2007
* * * * * * 0 * *
2006
* * * * * * 0 * *
2005
* * * * * * 0 * *
2004
* * * * * * 0 * *
2003
* * * * * * 0 * *
2002
0.27 * * * 1.5 0.459 9 0.05 *
2001
0.17 0.35 * 0.82 2.8 0.509 28 0.05 *
2000
0.1 0.4 0.70 1.6 3.1 0.69 30 0.2 182
1999
0.2 0.5 0.73 1.3 2.4 0.53 30 0.2 190
1998
0.1 0.8 1.04 2.1 4.1 0.85 31 0.2 272
1997
0.1 0.6 0.93 1.8 2.8 0.73 29 0.2 242
1996
0.25 0.8 0.97 2.7 3.7 0.99 32 0.5 251
1995
0.25 1.5 1.55 3.3 4.6 1.08 30 0.5 404
1994
0.25 1.7 1.88 3.3 7.8 1.49 31 0.5 490
1993
0.25 1.6 1.89 4.5 5.1 1.49 30 0.5 491
1992
0.25 1.5 2.03 4.6 5.0 1.46 31 0.5 528
1991
0.25 2.1 2.44 5.0 7.6 1.80 28 0.5 636
1990
0.9 2.3 3.02 5.3 10 2.20 27 0.5 786
1989
0.9 2.6 * 8.9 16 4.02 21 0.5 *
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.