Water quality of the Grijalva river on the Chiapas - Tabasco border
The objective was to characterize the water quality in a section of the Grijalva River and in some of its tributaries on the border between the States of Chiapas and Tabasco, in the rainy and dry seasons. Twenty-three physical, chemical and microbiological parameters as well as contaminants were d...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Universidad Juárez Autónoma de Tabasco
2018-01-01
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| Series: | Ecosistemas y Recursos Agropecuarios |
| Subjects: | |
| Online Access: | http://era.ujat.mx/index.php/rera/article/view/1334/947 |
| Summary: | The objective was to characterize the water quality in a section of the Grijalva River and in some of
its tributaries on the border between the States of Chiapas and Tabasco, in the rainy and dry seasons. Twenty-three
physical, chemical and microbiological parameters as well as contaminants were determined. The values obtained were
compared with the maximum permissible limits (MPLs) for water use and human consumption set out in Ocial
Mexican standard NOM-127-SSA1-1994, and with the water quality classication scale of the Comisión Nacional del
Agua (CONAGUA). The water quality in the studied section of the Grijalva River decreases as it descends to more
populated areas of the State of Tabasco. Water turbidity and E. coli coliform levels increase, both in the river channels
and in sources destined for human consumption. For the other variables evaluated, there are acceptable water quality
characteristics, mainly in the dry season, except for mercury, which occurs at levels higher than those recommended.
Further studies on the presence of mercury in the Grijalva River basin are recommended. |
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| ISSN: | 2007-9028 2007-901X |