Seasonal Variation in Water Quality: A Study with Reference to River Kuwano, Basti, (U.P.), India

The sublittoral macrobenthic invertebrate populations of the Upper Clyde Estuary are described. The estuary has a long history of organic pollution. The long term changes in species composition, faunal density and dominance patterns between 1974 and 1980 are presented. The fauna is dominated by brackish, pollution tolerant oligochaetes and polychaetes. Fluctuations in populations can be related to both seasonal variation in environmental conditions and long term improvements in water quality through a reduction in pollution loading to the estuary.

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Hydrogeochemistry and surface water quality assessment of IB valley coalfield area, India

Applied Water Science ◽

10.1007/s13201-021-01433-1 ◽

2021 ◽

Vol 11 (9) ◽

Author(s):

Bishnu Prasad Sahoo ◽

Himanshu Bhushan Sahu ◽

Dhruti Sundar Pradhan

Keyword(s):

Water Quality ◽

Heavy Metal ◽

Seasonal Variation ◽

Surface Water ◽

Water Samples ◽

Nickel Aluminum ◽

Acid Mine ◽

Significant Seasonal Variation ◽

Cadmium Selenium ◽

High Degree

AbstractCoal mining and ancillary activities have the potential to cause water pollution characterized by acid mine drainage, acid mine leachates, extreme pH conditions and heavy metal contaminations. In the present work, 33 water samples in premonsoon and 34 water samples in monsoon were collected from the surface water bodies of Ib Valley coalfield, India for hydrogeochemical analysis. In premonsoon, pH, TSS, Turbidity, DO, BOD, COD, Magnesium, Cadmium, Selenium, Nickel, Aluminum and in monsoon, pH, TSS, Turbidity, DO, BOD, COD, Iron, Cadmium, Selenium, Nickel and Aluminum were nonconforming to the permissible limit set by the Bureau of Indian Standards, World Health Organisation and Ministry of Environment, Forest and Climate Change, Government of India. The average BOD/COD ratio of less than 0.6 in both seasons indicated Ib valley coalfield water was not fairly biodegradable. The analysis of variance (ANOVA) revealed that significant seasonal variation (p < 0.05) was observed in the hydro-chemical parameters viz. TSS, turbidity, redox potential, acidity, total hardness, bicarbonate alkalinity, chloride, sulfate, nitrate, sodium, calcium, magnesium, iron, cadmium, chromium and magnesium during the entire sampling period. Whereas, no significant seasonal variation (p > 0.05) was observed in pH, EC, TDS, DO, BOD, residual chlorine, COD, oil and grease, fluoride, potassium, zinc, copper, selenium, nickel, aluminum, boron, silica, temperature, salinity, cyanide and phenol. Water Quality Index revealed that 39.39% and 35.29% samples belong to poor water quality category in premonsoon and monsoon, respectively. As per Heavy Metal Pollution Index, Degree of Contamination (Cd) and Heavy metal evaluation index, medium degree of pollution were exhibited by 51.52%, 30.30% and 45.45% samples in premonsoon and 20.59%, 35.29% and 26.47% samples in monsoon. Whereas, 5.88%, 2.94% and 5.88% samples were having high degree of pollution in monsoon and 15.15% samples caused high degree of pollution with respect to Cd in premonsoon. However, EC, Na%, PI, SAR and RSC values suggested that the water can be used for irrigation. Water type of the region had been found to be Ca–Mg–Cl–SO4 by Piper diagram.

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Physico-chemical attributes of water of Hakaluki Haor, Sylhet, Bangladesh

Jahangirnagar University Journal of Biological Sciences ◽

10.3329/jujbs.v3i2.28287 ◽

2016 ◽

Vol 3 (2) ◽

pp. 67-72

Author(s):

Md Tajul Islam ◽

M Mahfuzur Rahman ◽

Hassan Mahmud

Keyword(s):

Water Quality ◽

Seasonal Variation ◽

Water Samples ◽

Water Quality Assessment ◽

Inorganic Pollutants ◽

Chemical Parameters ◽

Ph Values ◽

Physico Chemical ◽

Significant Seasonal Variation ◽

Chemical Attributes

Water quality assessment has been carried out in the Hakaluki Haor of greater Sylhet district during May, 2013 to February, 2014. Water samples were collected from 5 spots during 4 seasons and a total of 15 physico-chemical parameters were studied. Significant seasonal variation was observed in all seasons among physico-chemical parameters. pH values varied from 5.9 - 7.1, water temperature varied from 23.7 26.7OC, transference varied from 23-53 cm, TSS varied from 18.1-192 mg/l, TDS varied 25-193.5 mg/l, EC varied from 30-680 ?s/cm , DO content of water varied from 4.6 - 5.6mg/l, BOD varied from 0.2-2.614 mg/l, COD varied from 38-312 mg/l, NO3-N varied from 0.1-30.4 mg/l, NH3 varied from 0.9-2.18 mg/l, alkalinity varied from 12-42 mg/l and PO4 varied from 0.9 -13.4 (mg/l). Agricultural and inorganic pollutants have been observed as the main causes of the Haor water pollution.Jahangirnagar University J. Biol. Sci. 3(2): 67-72, 2014 (December)

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Assessment of Water Quality of Blue Nile River in Sudan

Journal of Agronomy Research ◽

10.14302/issn.2639-3166.jar-18-2457 ◽

2018 ◽

Vol 1 (3) ◽

pp. 1-14

Author(s):

Rasha Babiker Gurashi Abu Sabah ◽

Abubaker Haroun Mohamed Adam ◽

Dawoud Mohamed Ali

Keyword(s):

Water Quality ◽

Seasonal Variation ◽

World Health ◽

Nile River ◽

Blue Nile ◽

Surrounding Environment ◽

The World ◽

Living Organisms ◽

Health Organization

The objectives of this study were to quantify the fresh water quality of Blue Nile River before processing, identify the pollutants, and to determine the most polluted areas, and their impacts on living organisms as well as the surrounding environment. Thus, random water samples were collected and analyzed at the laboratory of the Ministry of Irrigation and Water Resources, Ground water and Wadis Directorates - Khartoum. The outcomes were compared with the World Health Organization standardization. The results revealed variations in the concentration of the studied elements taken from the different locations. But, the results indicated that the water quality is good, and it is within the permissible water use. However, further study is recommended to include seasonal variation as well as the biological analysis.

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Longitudinal study of microbial load of drinking water and seasonal variation of water quality at the point of use in food establishments of Addis Ababa, Ethiopia

Journal of Water Sanitation and Hygiene for Development ◽

10.2166/washdev.2020.186 ◽

2020 ◽

Vol 10 (4) ◽

pp. 969-978

Author(s):

Aderajew Mekonnen Girmay ◽

Sirak Robele Gari ◽

Azage Gebreyohannes Gebremariam ◽

Bezatu Mengistie Alemu ◽

Martin R. Evans ◽

...

Keyword(s):

Water Quality ◽

Drinking Water ◽

Seasonal Variation ◽

Longitudinal Study ◽

Health Risk ◽

Addis Ababa ◽

Dry Season ◽

Microbial Load ◽

Food Outlets ◽

Point Of Use

Abstract The study aimed to determine the status of microbial load of drinking water and seasonal variation of water quality. An institution-based longitudinal study was conducted. 1,141 food establishments were divided into slum and non-slum areas based on their location. Moreover, they were categorized as large and small food establishments. Then, 125 food outlets were selected using a simple random sampling technique. From the selected food outlets, 250 drinking water samples were collected directly from the drinking water storage in the rainy and the dry seasons. Data analysis was conducted using a repeated-measure ANOVA statistical model. The finding indicated that, 26.4% and 10.7% of the food establishments' drinking water was positive for Escherichia coli in the wet and the dry season, respectively. Moreover, 3.2% and 1.6% of the food establishments' drinking water had very high health risk to customers during the wet and the dry season, respectively. The drinking water at the point of use was found to be vulnerable to microbiological contamination and had a serious health risk. Therefore, good sanitation and proper handling of drinking water, and effective drinking water treatment, such as disinfection and filtration, should be practiced in all food establishments.

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