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
2015 28.6 19.0 8.3 38.1 6.0
2016 23.7 14.4 17.5 39.2 5.2
2017 34.0 12.4 17.5 34.0 2.1
2018 24.7 17.2 18.3 35.5 4.3
2019 22.6 16.7 23.8 29.8 7.1
2020 19.1 23.6 12.4 36.0 9.0
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
2015 42.9 35.7 9.5 9.5 2.4
2016 39.9 23.2 15.8 17.9 3.2
2017 21.0 22.1 29.5 23.2 4.2
2018 34.0 23.4 22.3 16.0 4.3
2019 12.2 28.6 34.7 18.4 6.1
2020 38.0 22.5 19.7 14.1 5.6
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
2015 33.2 37.4 18.2 11.2 0.0
2016 43.5 25.0 20.3 9.5 1.7
2017 24.7 28.7 29.6 14.8 2.2
2018 36.8 25.8 21.8 13.8 1.8
2019 21.6 28.6 30.0 16.6 3.2
2020 27.4 27.4 23.9 19.3 2.0
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
2015 12.5 16.1 28.3 30.9 12.2
2016 11.4 12.3 29.0 31.5 15.8
2017 10.9 13.0 32.6 29.6 13.9
2018 14.0 10.7 28.4 31.9 15.0
2019 16.0 8.9 23.0 29.8 22.3
2020 16.1 12.0 22.2 42.1 7.6
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
2015 4.2 33.1 48.6 11.3 2.8
2016 2.0 17.4 57.7 17.4 5.5
2017 10.5 17.1 49.3 16.4 6.7
2018 11.4 21.5 42.4 19.6 5.1
2019 10.7 34.4 33.6 13.7 7.6
2020 29.2 32.6 19.4 15.3 3.5
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
2015 33.8 26.1 23.9 15.5 0.7
2016 37.5 27.4 15.7 19.0 0.4
2017 31.7 26.5 19.4 21.3 1.1
2018 40.7 20.2 20.9 16.3 1.9
2019 41.5 23.0 16.5 15.0 4.0
2020 36.9 17.0 25.2 19.4 1.5
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
2015 38.8 24.5 24.5 10.2 2.0
2016 27.8 37.0 25.9 7.4 1.9
2017 38.2 20.0 23.6 14.5 3.7
2018 49.0 17.0 15.1 17.0 1.9
2019 14.0 18.0 42.0 24.0 2.0
2020 43.8 20.8 22.9 12.5 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
2015 10.9 9.2 22.5 50.5 7.0
2016 13.4 13.2 24.1 40.1 9.2
2017 9.2 11.2 25.8 44.8 9.0
2018 14.4 11.3 22.1 43.6 8.6
2019 9.0 12.6 23.6 46.0 8.8
2020 12.1 12.5 19.8 47.9 7.7
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
2015 46.6 18.3 14.3 16.7 4.0
2016 58.1 12.6 11.5 14.2 3.6
2017 48.3 17.1 16.7 15.2 2.7
2018 37.8 21.5 21.9 15.5 3.3
2019 32.0 17.0 20.8 23.9 6.3
2020 34.9 16.8 19.0 25.0 4.3
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
2015 13.4 16.8 40.5 24.4 5.0
2016 16.0 12.4 36.7 28.5 6.4
2017 10.2 15.3 40.9 29.6 4.0
2018 6.9 13.5 45.1 28.7 5.8
2019 9.3 28.5 27.6 24.4 10.2
2020 25.9 28.5 23.2 20.2 2.3
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
2015 16.5 37.2 34.9 9.2 2.3
2016 23.9 42.6 24.0 7.6 1.9
2017 13.4 39.8 37.1 9.3 0.4
2018 13.5 7.3 60.8 17.7 0.7
2019 10.8 15.1 42.2 27.9 4.0
2020 17.8 13.0 51.8 14.9 2.5
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
2015 7.5 35.8 35.8 18.9 1.9
2016 25.5 31.9 27.7 14.9 0.0
2017 4.1 39.6 29.2 27.1 0.0
2018 0.0 0.0 63.8 34.0 2.2
2019 0.0 0.0 28.6 69.0 2.4
2020 2.2 2.2 46.7 48.9 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
2015 1.3 2.7 22.7 37.3 36.0
2016 0.0 4.1 17.8 43.8 34.3
2017 0.0 5.6 18.3 50.7 25.4
2018 0.0 0.0 13.5 59.5 27.0
2019 0.0 12.9 16.1 38.7 32.3
2020 1.5 4.4 13.2 50.0 30.9
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
2015 20.5 21.1 26.0 26.6 5.8
2016 24.2 19.3 24.8 24.9 6.8
2017 18.5 19.1 28.9 27.5 6.0
2018 20.7 14.7 30.2 28.0 6.4
2019 15.8 18.3 26.8 30.0 9.1
2020 21.9 17.6 24.6 30.6 5.4

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 indicad or, 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
Simbología: "<", menor que;" >", mayor que; "<=", menor o igual que.

FUENTES

Comisión Nacional del Agua, Estadísticas del Agua en México Ediciones 2005-2018. Secretaría del Medio Ambiente y Recursos Naturales, México.
Comisión Nacional del Agua, Gerencia de Calidad del Agua, Septiembre, 2021.

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