1405-7743 1405-7743 S1405-77432019000200001 10.22201/fi.25940732e.2019.20n2.013 Mexico Mexico Mexico Mexico Mexico 00 06 2019 00 06 2019 20 2 0 0

2009 26 3 3 724-30 APHA AWWA WPCF 1999 20th 2007 133 11 11 1042-50 1996 Mexico City, Mexico 2005 59 819-29 2009 57 87-90 2007 146 1-2 1-2 334-40 2010 64 2 2 237-45 EEU, European Union 1991 40-52 2002 22 3 3 269-82 2009 4 3-4 3-4 282-98 2005 40 9 9 1741-51 2001 Querétaro, Mexico 1999 33 9 9 2139-47 2006 129 1-3 1-3 80-100 2001 127 7 7 666-9 2004 54 7 7 1005-10 2011 2 1 1 259-70 2002 6 2 2 7-12 2010 30 1 1 80-5 2010 26 3 3 211-20 2011 16 4 4 379-86 2006 28 5 5 309-16 2004 21 5 5 549-57 2003 37 20 20 4823-34 2004 116 1-2 1-2 95-102 2005 108 SEMARNAT 1996 SEMARNAT 2009 2004 13 6 6 627-37 2003 53 7 7 737-44 2006 138 1 1 201-4 2003 2 6 6 413-27 1998 33 3 3 417-37 2010 88 4 4 276-84 2008 43 2 2 347-61 2001 36 1 1 39-48 2006