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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
| 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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