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MCLs, DLRs, and PHGs for Regulated Drinking Water Contaminants <br />(Units are in milligrams per liter (mglL), unless otherwise noted.) <br />Last Update: September 23, 2015 <br />Chemicals with MCLs in 22 CCR §64444- Organic Chemicals <br />(a) Volatile Organic Chemicals (VOCs) <br />Benzene <br />0.001 <br />0.0005 <br />0.00015 <br />2001 <br />Carbon tetrachloride <br />0.0005 <br />0.0005 <br />0.0001 <br />2000 <br />1,2- Dichlorobenzene <br />0.6 <br />0.0005 <br />0.6 <br />1997 <br />rev2009 <br />1,4- Dichlorobenzene -DCB <br />0.005 <br />0.0005 <br />0.006 <br />1997 <br />1, 1 -Dichloroethane 1,1 -DCA <br />0.005 <br />0.0005 <br />0.003 <br />2003 <br />1,2- Dichloroethane(1,2 -DCA) <br />0.0005 <br />0.0005 <br />0.0004 <br />1 <br />rev20 2005 <br />1,1- Dichloroeth lene 1,1 -DCE <br />0.006 <br />0.0005 <br />0.01 <br />1999 <br />cis -1,2- Dichloroeth lene <br />0.006 <br />0.0005 <br />0.1 <br />2006 <br />trans -1,2- Dichloroeth lene <br />0.01 <br />0.0005 <br />0.06 <br />2006 <br />Dichloromethane (Methylene chloride) <br />0.005 <br />0.0005 <br />0.004 <br />2000 <br />1,2- Dichloro ro ane <br />0.005 <br />0.0005 <br />0.0005 <br />1999 <br />1,3- Dichloropropene <br />0.0005 <br />0.0005 <br />0.0002 <br />1999 <br />rev2006 <br />Eth (benzene <br />0.3 <br />0.0005 <br />0.3 <br />1997 <br />Methyl terfiaEy butyl ether MTBE <br />0.013 <br />0.003 <br />0.013 <br />1999 <br />Monochlorobenzene <br />0.07 <br />0.0005 <br />0.07 <br />2014 <br />Styrene <br />0.1 <br />0.0005 <br />0.0005 <br />2010 <br />1,1,2,2 - Tetrachloroethane <br />0.001 <br />0.0005 <br />0.0001 <br />2003 <br />Tetrachloroeth lene (PCE) <br />0.005 <br />0.0005 <br />0.00006 <br />2001 <br />Toluene <br />0.15 <br />0.0005 <br />0.15 <br />1999 <br />1,2,4 - Trichlorobenzene <br />0.005 <br />0.0005 <br />0.005 <br />1999 <br />1,1,1 - Trichloroethane 1,1,1 -TCA <br />0.2 <br />1 0.0005 <br />1 <br />2006 <br />1,1,2 - Trichloroethane 1,1,2 -TCA <br />0.005 <br />0.0005 <br />0.0003 <br />2006 <br />Trichloroeth lene (TCE) <br />0.005 <br />0.0005 <br />0.0017 <br />2009 <br />Trichlorofluorom ethane Freon 11 <br />0.15 <br />0.005 <br />1.3 <br />2014 <br />1,1,2 - Trichloro- 1,2,2 - Trifluoroethane (Freon <br />113 <br />12 <br />.. <br />001 <br />4 <br />1997 <br />rev2011 <br />Vinyl chloride <br />0.0005 <br />0.0005 <br />0.00005 <br />2000 <br />X lenes <br />1.75 <br />0.0005 <br />1.8 <br />1997 <br />Exhibit 3 <br />75C -15 <br />