Sites with perchloroethylene data available Available Substances Toxics Statistics Home Page Data Descriptions Page
California Home ARB: Home Search Site Map Contact Us
California Air Resources Board

Annual Toxics Summary
ARB's ADAM Air Quality Database
Riverside-Rubidoux FAQs
Perchloroethylene
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
0.005 0.01 * 0.03 0.09 0.019 20 0.01 *
2022
0.005 0.005 0.010 0.02 0.04 0.010 29 0.01 1
2021
0.005 0.005 * 0.02 0.03 0.007 22 0.01 *
2020
0.005 * * * 0.02 0.004 7 0.01 *
2019
0.005 0.01 * 0.02 0.04 0.007 26 0.01 *
2018
* * * * * * 0 * *
2017
0.005 0.005 * 0.02 0.04 0.009 20 0.01 *
2016
0.005 0.02 0.018 0.04 0.06 0.014 30 0.01 2
2015
0.005 0.03 * 0.04 0.06 0.014 25 0.01 *
2014
0.005 0.02 0.026 0.04 0.06 0.014 28 0.01 3
2013
0.005 0.02 0.022 0.05 0.06 0.016 31 0.01 3
2012
0.005 0.02 0.020 0.03 0.08 0.014 30 0.01 2
2011
0.005 0.02 0.019 0.04 0.05 0.013 31 0.01 2
2010
0.005 0.02 0.025 0.04 0.10 0.017 31 0.01 3
2009
0.005 0.02 * 0.04 0.20 0.037 27 0.01 *
2008
0.005 0.02 0.024 0.03 0.05 0.011 30 0.01 3
2007
0.005 0.03 0.035 0.05 0.12 0.026 30 0.01 4
2006
0.005 0.04 0.038 0.06 0.08 0.019 29 0.01 4
2005
0.01 0.04 0.046 0.09 0.12 0.031 31 0.01 5
2004
0.01 0.05 0.051 0.10 0.17 0.037 30 0.01 6
2003
0.01 0.05 0.060 0.10 0.17 0.037 30 0.01 7
2002
0.02 0.08 * 0.16 0.21 0.053 26 0.01 *
2001
0.01 0.11 0.112 0.19 0.27 0.064 31 0.01 13
2000
0.005 0.11 0.129 0.16 0.42 0.076 30 0.01 15
1999
0.005 0.15 * 0.30 0.39 0.108 23 0.01 *
1998
0.005 0.09 * 0.23 0.28 0.081 15 0.01 *
1997
0.05 * * * 0.05 0.200 1 0.01 *
1996
0.04 0.12 0.175 0.30 1.1 0.200 31 0.01 20
1995
0.03 0.13 0.177 0.38 0.53 0.146 31 0.01 20
1994
0.02 0.14 0.191 0.31 0.95 0.181 31 0.01 22
1993
0.02 0.17 0.198 0.35 0.70 0.167 29 0.01 23
1992
0.02 0.18 0.201 0.37 0.42 0.119 30 0.01 23
1991
0.06 0.23 0.276 0.47 0.87 0.200 29 0.01 32
1990
0.03 0.27 0.237 0.39 0.44 0.127 28 0.01 27
1989
0.05 0.23 * 0.41 0.52 0.128 22 0.01 *
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.