Calidad reportada
Excelente Buena Aceptable Contaminada Fuertemente contaminada
Región Hidrológico Administrativa Año
I. Península de Baja California 2003 12.4 18.8 0.0 56.3 12.5
  2004 0.0 13.3 13.3 66.7 6.7
  2005 0.0 20.0 26.7 40.0 13.3
  2006 0.0 0.0 33.3 53.3 13.3
  2007 0.0 0.0 0.0 0.0 0.0
  2008 12.4 12.5 6.3 62.5 6.3
  2009 4.5 0.0 13.6 68.2 13.7
  2010 0.0 9.5 14.3 76.2 0.0
  2011 0.0 11.1 11.1 66.7 11.1
  2012 9.4 11.8 9.4 55.3 14.1
  2013 0.0 7.1 25.0 54.8 13.1
  2014 1.3 10.5 32.9 44.7 10.5
II. Noroeste 2003 0.0 0.0 0.0 0.0 0.0
  2004 0.0 0.0 0.0 71.4 28.6
  2005 0.0 0.0 50.0 42.9 7.1
  2006 0.0 0.0 42.9 35.7 21.4
  2007 0.0 0.0 50.0 35.7 14.3
  2008 28.5 35.7 14.3 17.9 3.6
  2009 43.5 17.7 24.2 14.5 0.1
  2010 39.1 28.1 17.2 12.5 3.1
  2011 32.0 39.6 20.8 5.7 1.9
  2012 28.2 39.4 21.1 11.3 0.0
  2013 0.0 7.9 47.4 42.1 2.6
  2014 1.4 9.6 45.2 42.5 1.4
III. Pacífico Norte 2003 33.3 9.5 23.8 28.6 4.8
  2004 23.8 23.8 19.0 33.3 0.0
  2005 38.1 14.3 14.3 23.8 9.5
  2006 19.4 36.1 22.2 16.7 5.6
  2007 25.0 18.8 18.8 37.5 0.0
  2008 18.7 12.5 37.5 31.3 0.0
  2009 11.7 41.2 11.8 35.3 0.0
  2010 11.8 41.2 23.5 23.5 0.0
  2011 16.7 53.3 10.0 20.0 0.0
  2012 21.2 34.8 31.5 10.3 2.2
  2013 0.0 2.3 59.1 36.7 1.9
  2014 0.0 7.3 61.2 31.6 0.0
IV. Balsas 2003 10.7 25.0 7.1 35.7 21.5
  2004 11.6 16.3 18.6 37.2 16.3
  2005 15.0 27.5 10.0 35.0 12.5
  2006 7.0 20.9 9.3 44.2 18.6
  2007 12.8 21.3 21.3 29.8 14.9
  2008 15.5 17.2 31.0 20.7 15.6
  2009 9.5 21.4 27.4 28.6 13.1
  2010 17.0 19.7 29.1 29.9 4.3
  2011 19.4 17.8 29.4 29.4 4.0
  2012 30.8 13.9 19.8 27.2 8.3
  2013 1.2 10.3 34.6 40.4 13.5
  2014 1.3 13.0 35.5 38.4 11.7
V. Pacífico Sur 2003 20.0 40.0 40.0 0.0 0.0
  2004 0.0 0.0 0.0 0.0 0.0
  2006 0.0 0.0 0.0 0.0 0.0
  2007 0.0 0.0 0.0 0.0 0.0
  2008 71.4 21.4 0.0 7.2 0.0
  2009 96.0 0.0 4.0 0.0 0.0
  2010 63.1 19.3 7.0 1.8 8.8
  2011 64.8 16.9 11.3 7.0 0.0
  2012 19.0 25.4 38.0 15.5 2.1
  2013 0.8 17.2 31.1 41.8 9.1
  2014 1.4 9.2 41.5 47.2 0.7
VI. Río Bravo 2003 34.6 42.3 19.2 3.9 0.0
  2004 44.4 24.4 17.8 13.3 0.0
  2005 0.0 5.3 15.8 79.0 0.0
  2006 20.6 17.6 41.2 17.6 2.9
  2007 28.6 38.1 23.8 9.5 0.0
  2008 32.8 31.1 19.7 16.4 0.0
  2009 51.6 39.8 1.1 7.5 0.0
  2010 53.8 34.4 8.6 3.2 0.0
  2011 59.1 22.7 18.2 0.0 0.0
  2012 45.9 19.4 20.7 12.6 1.4
  2013 32.1 13.6 37.6 15.7 1.0
  2014 10.2 27.0 39.3 20.9 2.5
VII. Cuencas Centrales del Norte 2003 29.4 35.3 35.3 0.0 0.0
  2004 5.6 38.9 44.4 11.1 0.0
  2005 20.0 25.0 55.0 0.0 0.0
  2006 25.0 20.0 45.0 10.0 0.0
  2007 20.0 50.0 30.0 0.0 0.0
  2008 14.3 28.6 57.1 0.0 0.0
  2009 25.0 30.0 45.0 0.0 0.0
  2010 35.0 45.0 15.0 5.0 0.0
  2011 30.0 45.0 20.0 5.0 0.0
  2012 25.6 34.9 20.9 18.6 0.0
  2013 0.0 0.0 54.3 43.5 2.2
  2014 0.0 0.0 56.5 43.5 0.0
VIII. Lerma-Santiago-Pacífico 2003 10.0 17.8 22.2 35.6 14.4
  2004 8.0 11.4 28.4 38.6 13.6
  2005 9.8 14.6 19.5 42.7 13.4
  2006 3.0 8.9 27.7 47.5 12.9
  2007 0.0 17.2 29.3 40.4 13.1
  2008 1.3 14.1 29.5 44.3 10.8
  2009 4.0 17.3 26.7 42.0 10.0
  2010 3.3 12.0 38.0 38.0 8.7
  2011 1.2 18.8 38.2 33.3 8.5
  2012 16.1 8.5 22.8 44.9 7.7
  2013 0.3 3.1 25.3 63.5 7.8
  2014 1.5 4.8 21.2 65.7 6.8
IX. Golfo Norte 2003 53.3 17.8 22.2 4.4 2.3
  2004 49.0 27.5 13.7 7.8 2.0
  2005 62.8 19.6 11.8 3.9 2.0
  2006 51.0 27.5 17.6 2.0 2.0
  2007 46.0 28.0 16.0 8.0 2.0
  2008 50.9 27.3 14.5 5.5 1.8
  2009 55.6 22.2 11.1 6.7 4.4
  2010 57.9 26.3 10.5 3.5 1.8
  2011 64.9 17.5 7.0 10.6 0.0
  2012 57.4 3.8 7.7 27.7 3.4
  2013 49.4 8.2 18.9 21.0 2.5
  2014 14.9 31.8 30.2 21.1 2.1
X. Golfo Centro 2003 33.3 33.3 25.0 8.4 0.0
  2004 42.9 11.4 8.6 22.9 14.3
  2005 37.5 15.6 12.5 25.0 9.4
  2006 48.8 14.0 16.3 16.3 4.7
  2007 43.6 20.5 7.7 20.5 7.7
  2008 44.1 23.3 14.0 16.3 2.3
  2009 39.6 8.3 22.9 25.0 4.2
  2010 28.2 26.1 26.1 19.6 0.0
  2011 23.9 23.9 23.9 21.7 6.6
  2012 22.4 19.0 29.3 24.1 5.2
  2013 13.7 6.8 49.4 27.7 2.4
  2014 3.2 8.4 40.6 44.6 3.2
XI. Frontera Sur 2003 66.6 22.2 5.6 0.0 5.6
  2004 0.0 0.0 0.0 0.0 0.0
  2005 44.4 22.2 14.8 18.5 0.0
  2006 9.4 43.8 28.1 15.6 3.1
  2007 32.3 35.5 22.6 6.5 3.2
  2008 31.2 46.9 15.6 6.3 0.0
  2009 16.6 50.0 13.9 13.9 5.6
  2010 30.5 38.9 16.7 13.9 0.0
  2011 38.2 32.4 20.6 8.8 0.0
  2012 64.8 13.3 12.9 7.8 1.2
  2013 37.5 21.1 25.4 14.8 1.2
  2014 4.0 44.8 38.8 11.2 1.2
XII. Península de Yucatán 2003 79.9 6.7 6.7 6.7 0.0
  2004 57.1 35.7 7.1 0.0 0.0
  2005 64.3 28.6 0.0 7.1 0.0
  2006 53.3 33.3 13.3 0.0 0.0
  2007 71.4 21.4 7.1 0.0 0.0
  2008 64.3 21.4 14.3 0.0 0.0
  2009 55.0 30.0 10.0 5.0 0.0
  2010 45.0 45.0 5.0 5.0 0.0
  2011 27.3 54.5 18.2 0.0 0.0
  2012 79.1 9.0 10.4 1.5 0.0
  2013 28.3 26.4 18.9 26.4 0.0
  2014 0.0 34.0 41.5 24.5 0.0
XIII. Aguas del Valle de México 2003 6.2 12.5 12.5 6.3 62.5
  2004 4.0 4.0 20.0 12.0 60.0
  2005 4.0 4.0 12.0 20.0 60.0
  2006 4.0 4.0 4.0 32.0 56.0
  2007 4.0 8.0 12.0 24.0 52.0
  2008 4.0 8.0 16.0 20.0 52.0
  2009 4.1 0.0 12.5 29.2 54.2
  2010 3.7 3.7 18.5 22.2 51.9
  2011 5.0 0.0 15.0 30.0 50.0
  2012 20.0 3.6 16.4 27.3 32.7
  2013 2.9 3.0 17.9 46.3 29.9
  2014 0.0 1.0 34.0 43.3 21.6
Nacional 2003 28.8 21.4 18.4 20.4 11.0
  2004 24.0 18.2 19.6 26.2 11.9
  2005 26.0 17.0 18.0 28.0 11.0
  2006 19.6 18.9 23.8 26.8 11.0
  2007 21.9 23.7 21.9 22.4 10.1
  2008 23.3 22.2 22.9 23.7 7.9
  2009 28.3 22.1 18.6 23.5 7.5
  2010 29.2 23.6 21.2 20.4 5.6
  2011 28.7 23.3 23.5 19.9 4.6
  2012 32.1 15.2 21.0 26.2 5.5
  2013 13.8 8.9 33.2 38.1 6.0
  2014 3.7 15.5 35.6 40.2 5.0

NOTAS DE LA VARIABLE

WebFOCUS Report
Porcentaje de sitios de monitoreo en cuerpos de agua superficiales que miden DQO, según el nivel reportado de calidad del agua DQO: Demanda Química de Oxígeno. Indicador que se utiliza para determinar la cantidad total de materia orgánica, proveniente principalmente de las descargas de aguas residuales tanto de origen municipal como no municipal, presente en los cuerpos de agua, y que incide en la disminución del contenido de oxígeno disuelto al aumentar la concentración de materia, provocando una perdida en la calidad del agua.
Los valores de DQO se expresan en mg/l; de acuerdo con este indicador, los niveles de calidad del agua son los siguientes:
Excelente, si DQO =10
Buena, si 10 < DQO =20
Aceptable, si 20 < DQO =40
Contaminada, si 40 < DQO =200
Fuertemente contaminada, si DQO > 200


FUENTES

Comisión Nacional del Agua, Estadísticas del Agua en México Ediciones 2005-2015. Secretaría del Medio Ambiente y Recursos Naturales, México.