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Annual Statewide Toxics Summary
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parts per billion
Read About New Estimated Risk
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
Estimated
Risk
2017
0.005 0.005 0.010 0.02 0.19 0.015 411 0.01 1
2016
0.005 0.005 0.017 0.04 0.38 0.025 429 0.01 2
2015
0.005 0.01 0.017 0.04 0.13 0.017 412 0.01 2
2014
0.005 0.01 0.019 0.04 0.22 0.021 387 0.01 2
2013
0.005 0.01 0.019 0.04 0.17 0.022 469 0.01 2
2012
0.005 0.01 0.019 0.04 0.21 0.022 467 0.01 2
2011
0.005 0.02 0.024 0.05 0.56 0.041 490 0.01 3
2010
0.005 0.02 0.026 0.05 0.17 0.025 473 0.01 3
2009
0.005 0.02 0.031 0.06 3.2 0.142 522 0.01 4
2008
0.005 0.02 0.033 0.06 2.0 0.095 518 0.01 4
2007
0.005 0.02 0.035 0.08 0.29 0.037 495 0.01 4
2006
0.005 0.03 0.039 0.08 0.42 0.044 504 0.01 5
2005
0.005 0.03 0.047 0.10 0.67 0.060 510 0.01 5
2004
0.005 0.03 0.046 0.09 0.70 0.053 503 0.01 5
2003
0.005 0.04 0.057 0.12 0.61 0.060 503 0.01 7
2002
0.005 0.05 0.077 0.17 0.92 0.099 459 0.01 9
2001
0.005 0.05 0.089 0.21 1.1 0.108 499 0.01 10
2000
0.005 0.07 0.115 0.24 1.9 0.152 497 0.01 13
1999
0.005 0.06 * 0.28 2.1 0.207 394 0.01 *
1998
0.005 0.04 0.114 0.28 2.2 0.196 512 0.01 13
1997
0.005 0.05 0.116 0.32 1.2 0.144 557 0.01 13
1996
0.005 0.06 0.134 0.34 1.5 0.191 626 0.01 16
1995
0.01 0.07 0.166 0.41 3.2 0.259 616 0.01 19
1994
0.005 0.07 0.180 0.40 7.7 0.399 611 0.01 21
1993
0.005 0.09 0.270 0.53 28 1.22 596 0.01 31
1992
0.005 0.13 0.210 0.54 1.6 0.227 598 0.01 24
1991
0.02 0.16 0.271 0.55 6.8 0.411 581 0.01 31
1990
0.02 0.17 0.277 0.58 5.0 0.388 579 0.01 32
1989
0.03 0.19 0.432 0.74 14 0.999 449 0.01 50
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.