Preprints
https://doi.org/10.5194/dwes-2020-31
https://doi.org/10.5194/dwes-2020-31
13 Jan 2021
 | 13 Jan 2021
Status: this preprint was under review for the journal DWES. A final paper is not foreseen.

Investigation and assessment of supplied water quality in Rajshahi City Corporation of Bangladesh

Saleha Akhter Poly, Arif Hasnat, Hasib Imran Tusher, and H. M. Rasel

Abstract. This paper has investigated the extensive implementation of distinct types of pipes in the Water Distribution System (WDS) and evaluated the impacts of particular leachable organic chemicals and bacteriological issues. Besides, the paper inspects significant parameters of water quality as the population of Rajshahi City, Bangladesh relies on water provided via pipes for drinking and other domestic purposes. This study aims to assess the quality of physical, chemical, and microbiological parameters of supplied drinking water through lines in Rajshahi City Corporation (RCC) by Rajshahi Water Supply and Sewerage Authority (RWASA). Therefore, the study managed a total of sixteen physical, chemical, and microbiological parameters to analyse them in the laboratory. The experimental results showed that pH and hardness of all samples were within the allowable limit as per Bangladesh Drinking Water Standards (BDWSs) and World Health Organization (WHO). All models contained an extreme level of iron and manganese. They also included a negligible amount of arsenic. The experiment detected lesser Dissolved Oxygen (DO), Residual Chlorine (Residual Cl), and the undesirable odour in about 90 % samples. All samples contained Total Coliform (TC) and Escherichia coli (E. coli) bacteria. A few samples contained a significant amount of turbidity, Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), and Electrical Conductivity (EC). The authors developed a statistical analysis by SPSS software to co-relate the parameters. This study recommends the presence of such bacteria, iron, and manganese in the pipeline.

This preprint has been withdrawn.

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Saleha Akhter Poly, Arif Hasnat, Hasib Imran Tusher, and H. M. Rasel

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on dwes-2020-31', Anonymous Referee #1, 01 Feb 2021
  • RC2: 'Comment on dwes-2020-31', Anonymous Referee #2, 30 Mar 2021

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on dwes-2020-31', Anonymous Referee #1, 01 Feb 2021
  • RC2: 'Comment on dwes-2020-31', Anonymous Referee #2, 30 Mar 2021
Saleha Akhter Poly, Arif Hasnat, Hasib Imran Tusher, and H. M. Rasel
Saleha Akhter Poly, Arif Hasnat, Hasib Imran Tusher, and H. M. Rasel

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Short summary
This research investigated sixteen physical, chemical, and microbiological parameters to assess the drinking water in Rajshahi City Corporation supplied by Rajshahi Water Supply and Sewerage Authority. The results observed pH and hardness within the allowable limit, an extreme level of iron and manganese, a negligible amount of arsenic, lesser dissolved oxygen and residual chlorine, and the undesirable odour in the samples as per Bangladesh Drinking Water Standards and World Health Organization.