Authors :
M. Asadujjaman (Lecturer); Avizit Biswas
Volume/Issue :
Volume 8 - 2023, Issue 5 - May
Google Scholar :
https://bit.ly/3TmGbDi
Scribd :
https://tinyurl.com/yc75t6pu
DOI :
https://doi.org/10.5281/zenodo.8086088
Abstract :
It is indisputable that all life forms on Earth
are dependent on water for survival. However, water
sources such as rivers, lakes, ponds, glaciers, and rainfall
are threatened by urbanization, population growth,
household refuse, and industrialization. The Dharatana
River plays an essential role in meeting the diverse water
requirements of the surrounding communities, including
those for bathing, irrigation, domestic use, and fishing.
However, the rapid expansion of minor industries and
poultry farms may threaten the river's water quality.
Therefore, a thorough evaluation regarding the river's
water quality or various purposes is required. The influx
of pollutants has had a significant impact on the
Dharatana River, resulting in a progressive decline in its
water quality. For data collection, a 10-kilometer
segment of the river from Narasingh Datterber to Rastar
Mhatha Launch Ghat, five sampling points were
established. Monthly water samples collected and
analyzed in a laboratory throughout 2022. Twenty water
quality parameters, including physical, chemical, and
biological aspects, were investigated using standard
procedures. Twelve of these parameters were discovered
to exceed the Bangladeshi drinking water standards. The
purpose of this research is to evaluate the water quality
of the Dharatana River by collecting water samples from
five sampling sites and analyzing them in a laboratory.
Temperature, pH, turbidity, conductivity, and color
are some of the twenty water parameters. Other
parameters include alkalinity, hardness, TS, TDS, BOD,
COD, manganese, TSS, phosphate, nitrite, nitrate,
chloride, DO, fecal coliform, and total coliform were
among the twelve essential water quality parameters
measured. The obtained values of the parameters were
compared to WHO Standard and ECR'97 drinkable
water standards. Calculating the WQI according to the
National Sanitary Foundation (NSF) method, the water
quality was evaluated. The correlations between
chloride, IDS, and conductivity were identified as
significant by the research. This correlation analysis aids
in the management and monitoring of water Quality.
The 2014 average WQI indicated comparable water
quality in both the temporal (12-month) and spatial (5-
station) dimensions, with scores near to one another.
Five stations along the Dharatana River yielded water
samples with WQI values of 66.80, 64.50, 67.80, 68.50,
and 65.50 indicatingmoderate water quality. In 2014, the
average WQI was 64 based on temporal analysis and 65
based on spatial analysis, indicating similar trends. The
river water is undrinkable without purification. While
the WQI simplifies complex variables, it is unable to
differentiate between sources of pollution. Effective
water management strategies are indispensable for
enhancing the Dharatana River's water quality and
suitability for a variety of purposes.
Keywords :
Water Quality Index (WQI; Dharatana River; NSF-WQI.
It is indisputable that all life forms on Earth
are dependent on water for survival. However, water
sources such as rivers, lakes, ponds, glaciers, and rainfall
are threatened by urbanization, population growth,
household refuse, and industrialization. The Dharatana
River plays an essential role in meeting the diverse water
requirements of the surrounding communities, including
those for bathing, irrigation, domestic use, and fishing.
However, the rapid expansion of minor industries and
poultry farms may threaten the river's water quality.
Therefore, a thorough evaluation regarding the river's
water quality or various purposes is required. The influx
of pollutants has had a significant impact on the
Dharatana River, resulting in a progressive decline in its
water quality. For data collection, a 10-kilometer
segment of the river from Narasingh Datterber to Rastar
Mhatha Launch Ghat, five sampling points were
established. Monthly water samples collected and
analyzed in a laboratory throughout 2022. Twenty water
quality parameters, including physical, chemical, and
biological aspects, were investigated using standard
procedures. Twelve of these parameters were discovered
to exceed the Bangladeshi drinking water standards. The
purpose of this research is to evaluate the water quality
of the Dharatana River by collecting water samples from
five sampling sites and analyzing them in a laboratory.
Temperature, pH, turbidity, conductivity, and color
are some of the twenty water parameters. Other
parameters include alkalinity, hardness, TS, TDS, BOD,
COD, manganese, TSS, phosphate, nitrite, nitrate,
chloride, DO, fecal coliform, and total coliform were
among the twelve essential water quality parameters
measured. The obtained values of the parameters were
compared to WHO Standard and ECR'97 drinkable
water standards. Calculating the WQI according to the
National Sanitary Foundation (NSF) method, the water
quality was evaluated. The correlations between
chloride, IDS, and conductivity were identified as
significant by the research. This correlation analysis aids
in the management and monitoring of water Quality.
The 2014 average WQI indicated comparable water
quality in both the temporal (12-month) and spatial (5-
station) dimensions, with scores near to one another.
Five stations along the Dharatana River yielded water
samples with WQI values of 66.80, 64.50, 67.80, 68.50,
and 65.50 indicatingmoderate water quality. In 2014, the
average WQI was 64 based on temporal analysis and 65
based on spatial analysis, indicating similar trends. The
river water is undrinkable without purification. While
the WQI simplifies complex variables, it is unable to
differentiate between sources of pollution. Effective
water management strategies are indispensable for
enhancing the Dharatana River's water quality and
suitability for a variety of purposes.
Keywords :
Water Quality Index (WQI; Dharatana River; NSF-WQI.
