Year 1988 | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021
Substance
Minimum Display Off | 1 | 5 | 10 | 20 | 50 | 100 | 500 | 1000

Year 2020 Pollution Heat Map for Trichloroethylene (TCE)

Legend Green No Substance Detected Yellow < Federal Threshold (FT) Orange FT - 2x FT
Red 2x FT - 10x FT Purple 10x FT - 100x FT Black > 100x FT
Gradients represent estimates based upon concentration.

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Data from the California Water Resources Control Board. Updated June 2, 2013.

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