Abstract
Abstract This research aims at using a combined water quality index (WQI) and pollution index (PI) to assess and characterize river water quality of Cau River which is one of the longest rivers in the north of Vietnam. Five different water quality and water pollution indices were used including the Water Quality Index (WQI), Comprehensive Pollution Index (CPI), Organic Pollution Index (OPI), Eutrophication Index (EI), and Trace Metal Pollution Index (TPI). The combined water pollution indices show more serious pollution towards the river downstream. In particular, CPI and OPI reveal a high risk of eutrophication. Cluster analysis was applied to classify water monitoring points into different quality groups in order to provide a better understanding of the water status in the river. This study indicates that a combined water quality analysis could be an option for decision making water use purposes while its single index shows the current situation of water quality.
Highlights
Water is a vital commodity, both to sustain life and for the global economy
The average values of ten consecutive years of water quality show that total suspended solids (TSS) and chemical oxygen demand (COD) exceed the regulated level indicated in Vietnam National Standards QCVN08:2015/ BTMT, column A1 – standard for domestic water usage (Table 4) (MONRE )
This study has suggested a possible combination of quality and pollution indices based on monitoring environmental parameters for river quality assessment
Summary
Water is a vital commodity, both to sustain life and for the global economy. Assessing water quality for different water use purposes, such as domestic use, irrigation, conservation and industrial usage, are an important strategy for food safety and human health. Water quality evaluation aims to identify the sources of water pollution and develop a strategy for sustainable water source management, maintaining and promoting human health and other social and economic growth (Carroll et al ). In Vietnam, research on water quality assessment mostly focuses on comparing the concentration of pollutant to the national surface water quality standard (MONRE ). The WQI has been used for 10 years (VEA ), a combination of WQI with other water pollution indices was not applied widely for water quality assessment research
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Water Supply: Research and Technology-Aqua
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
