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Microbiological and physicochemical water quality assessments of river water in an industrial region of the northwest coast of Borneo


Citation

Leong, Sui Sien and Ismail, Johan and Ahmad Denil, Nurdiyana and Sarbini, Shahrul Razid and Wasli, Wafri and Lingoh, Arlene Debbie (2018) Microbiological and physicochemical water quality assessments of river water in an industrial region of the northwest coast of Borneo. Water, 10 (11). art. no. 1648. pp. 1-12. ISSN 2073-4441

Abstract

Urbanization and ever increasing socioeconomic activities have degraded natural resources globally. This study monitored water quality (WQI) based on physicochemical and microbial qualities of river water in an industrial region northwest coast of Borneo. Microbiological parameters tested included total viable count (TVC), coliform count (TC), faecal coliform count (FC), and Escherichia coli confirmation. Physicochemical constituents evaluated included water temperatures (T), pH, total dissolved solids (TDS), salinity, electrical conductivity (EC), dissolved oxygen (DO), biochemical oxygen demand (BOD), ammoniacal nitrogen (NH3-N), chemical oxygen demand (COD) and total suspended solids (TSS). The mean microbial counts of samples were: TVC (3.9 × 102–3.0 × 104 cfu mL−1), TC and FC (23–>1600 MPN 100 mL−1) (MPN: the most probable number) and Escherichia coli growth was confirmed. The mean values of pH, TDS, salinity, EC and BOD are significantly different (p < 0.05) between the rivers ranged: pH (5.05 ± 0.03–6.10 ± 0.10), TDS (0.0 ± 0.0–38,600 ± 50 mg L−1), salinity (0.01 ± 0.0–3.07 ± 0.07%), EC (650 ± 25–19,566.67 ± 251.66 µS cm−1), and BOD (0.23 ± 0.10–3.12 ± 0.02 mgO2 L−1). The tested parameters of samples exceeded international limits with the exception of COD and TSS. The WQI of river water tested ranged from 65–73 under class III. Most of the river water was slightly polluted and a potential threat to public health.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Agriculture and Food Sciences
DOI Number: https://doi.org/10.3390/w10111648
Publisher: MDPI
Keywords: River; Physiochemical; Microbial; Water quality; Borneo
Depositing User: Nabilah Mustapa
Date Deposited: 08 Apr 2019 08:39
Last Modified: 08 Apr 2019 08:39
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/w10111648
URI: http://psasir.upm.edu.my/id/eprint/14440
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