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Calidad del agua en estaciones seleccionadas del Lago Chairel |
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Concepto |
Unidades |
1990 |
1995 |
2000 |
2005 |
2006 |
2007 |
2008 |
2009 |
2010 |
2011 |
2012 |
2013 |
2014 |
2015 |
2016 |
2017 |
2018 |
2019 |
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Estación de medición |
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Nombre |
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Toma de agua potable (COAPA) |
Toma de agua potable (COAPA) |
El Moralillo |
El Moralillo |
El Moralillo |
El Moralillo |
El Moralillo |
El Moralillo |
El Moralillo |
El Moralillo |
Bocatoma Comapa Tampico |
Bocatoma Comapa Tampico |
Bocatoma Comapa Tampico |
Bocatoma Comapa Tampico |
Bocatoma Comapa Tampico |
Bocatoma Comapa Tampico |
Bocatoma Comapa Tampico |
Bocatoma Comapa Tampico |
|
Frecuencia de muestreo anual |
Número |
5 |
4 |
6 |
3 |
2 |
1 |
2 |
1 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
2 |
3 |
1 |
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Parámetros (mediana anual) |
|
Temperatura |
°C |
28 |
27 |
23.2 |
28.5 |
27.6 |
29 |
25.65 |
30 |
28.65 |
27.7 |
30 |
25.68 |
28.1 |
28.8 |
27.4 |
30.3 |
21 |
23.1 |
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Acidez |
pH |
nd |
nd |
7.975 |
8.46 |
8.05 |
7.43 |
7.93 |
7.99 |
7.65 |
7.65 |
7.89 |
nd |
7.935 |
8.05 |
8.05 |
8.3 |
7.9 |
8.3 |
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Oxígeno disuelto |
mg O2 / l |
5.6 |
6.4 |
6 |
8.1 |
6.75 |
6.5 |
7.7 |
6.65 |
6.25 |
5.225 |
6.71 |
nd |
8.54 |
6.76 |
6.3 |
7.15 |
4.8 |
4.9 |
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DBO (20°C 5d) |
mg O2/ l |
1.25 |
1.33 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<2 |
2.14 |
2.05 |
<2 |
<2 |
<2 |
3.04 |
<2 |
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DQO (K2Cr2O7) |
mg O2/ l |
17 |
14 |
2.75 |
3.3 |
1.78 |
0.74 |
1.63 |
nd |
1.0015 |
1.088 |
70.5 |
23.24 |
53.005 |
53.145 |
13.23 |
13.785 |
21.78 |
<10 |
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Sólidos suspendidos |
mg/ l |
13 |
30 |
17.85 |
17 |
14.7 |
18 |
18.5 |
37 |
25 |
31 |
18.5 |
275.5 |
<10 |
13 |
24 |
19.5 |
22 |
18 |
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Sólidos disueltos |
mg/ l |
664 |
882 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
446.08 |
633.6 |
460.48 |
523.84 |
555.52 |
524.8 |
561.92 |
561.28 |
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Nitrógeno total |
mg N/ l |
nd |
nd |
0.318 |
nd |
nd |
nd |
1.101 |
nd |
0.3805 |
0.508 |
2.109 |
0.31175 |
0.4835 |
0.6305 |
0.6429 |
0.2275 |
0.4470 |
0.173 |
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Nitratos |
mg NO3/ l |
<0.1 |
0.15 |
0.07 |
nd |
nd |
nd |
nd |
nd |
0.103 |
0.3465 |
0.029 |
0.0853 |
0.0355 |
0.0889 |
0.0189 |
0.0450 |
0.0850 |
<0.004 |
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Amonio |
mg NH4/ l |
nd |
nd |
0.0842 |
0.07 |
0.12 |
0.1 |
0.03 |
0.096 |
1.12 |
0.065 |
0.050 |
nd |
0.0445 |
0.0919 |
0.0743 |
0.0714 |
0.0929 |
0.0027 |
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Fósforo total |
mg P/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
0.09 |
0.06 |
0.0685 |
0.0405 |
0.04075 |
0.0233 |
0.0842 |
0.0546 |
0.0372 |
0.0152 |
0.1195 |
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Ortofosfatos |
mg P/ l |
<0.02 |
0.035 |
0.095 |
nd |
nd |
nd |
0.165 |
0.08 |
0.05 |
nd |
0.0255 |
0.0094 |
0.0005 |
0.05715 |
0.029 |
0.0222 |
<0.001 |
<0.001 |
|
Clorofila (en verano) |
mg /m3 |
nd |
nd |
7.715 |
0.75 |
5.475 |
6.85 |
5.75 |
6.2 |
8.195 |
0.004 |
0.011 |
14.9394 |
11.695 |
113.4232 |
16.3905 |
14.099 |
1.351 |
4.264 |
|
Coliformes fecales |
NMP/100 ml |
26 |
22.5 |
136.5 |
230 |
1246.5 |
430 |
nd |
nd |
nd |
nd |
460 |
596.5 |
2420 |
419.5 |
1091 |
14300 |
1200 |
11000 |
|
Arsénico total |
mg As/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
<0.00139 |
|
Cadmio total |
mg Cd/ l |
<0.001 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
<0.0002 |
|
Cromo total |
mg Cr/ l |
0.012 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00088 |
0.006978 |
<0.00088 |
<0.00088 |
<0.00088 |
0.0035 |
0.01357 |
0.008679 |
|
Plomo total |
mg Pb/ l |
0.038 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00154 |
0.0074 |
<0.00154 |
<0.00154 |
<0.00154 |
<0.00154 |
<0.00154 |
<0.00154 |
|
Mercurio total |
mg Hg/ l |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.00009 |
<0.00009 |
<0.00009 |
0.0007725 |
<0.00009 |
<0.00009 |
<0.00009 |
<0.00009 |
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Níquel total |
mg Ni/ l |
0.5 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
<0.0002 |
0.0015105 |
<0.0002 |
<0.0002 |
<0.0002 |
0.00144 |
0.00248 |
<0.0002 |
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Notas: |
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La fuente reporta los datos con medianas en vez de promedios debido a la alta sensibilidad de los promedios a los valores extremos. |
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Ubicación geográfica de las estaciones de medición. Bocatoma Comapa Tampico: 22° 14' 18.24'' lat.N, 97° 52' 35.04'' long. W (todos los nombres de estación que se presentan corresponden a la misma). |
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nd. No disponible |
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Fuente: |
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Comisión Nacional del Agua, Gerencia de Calidad del Agua, Junio 2020 |
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