0034-7744 0034-7744 S0034-77442019000401037 10.15517/rbt.v67i4.33278 Germany Mexico Guatemala USA Mexico Mexico Mexico 00 09 2019 00 09 2019 67 4 1037 1058

2016 75 56-65 American Public Health Association (APHA), American Water Works Association (AWWA), Water Pollution Control Federation (WPCF). 1995 American Public Health Association (APHA). 1998 American Public Health Association (APHA), American Water Works Association (AWWA), Water Pollution Control Federation (WPCF). 2005 2006 230 1-2 1-2 52-69 2008 8 1-7 1988 36 1 1 123-7 2018 33 2 2 166-76 2002 1 248-61 1974 45 467-87 2002 11 463-7 2002 399-418 2016 786 5-21 2011 21 4 4 681-92 2012 39 497-509 2014 25 627-35 1998 19 139-59 2017 58 101-17 2002 6597 1980 57 419 419 2017 27 9 9 1308-17 2017 37 4302-15 2007 2018 189 76-90 2009 68 61-7 Golden Software, Inc. 2012 2000 2010 81 S133-40 1975 2007 26 1398-415 2008 88 93-112 2006 113 363-75 2011 3 81-91 1989 2002 64 165-74 2016 150 200-20 2011 18 3 3 343-7 2003 2009 36 21 21 L21701 2000 1999 146 219-38 2007 7 31-3 2010 1998 68 832-40 2015 17 7233 2010 2010 27 490-507 2011 661 407-33 2012 46 59-74 2013 61 2 2 603-44 2007 112 D24S08 R Core Team. 2013 2007 2002 27 117-31 2006 2010 725-71 2018 66 1 1 S123-31 2016 33 3 3 355-64 2007 17 4 4 989-1003 2011 2001