scholarly journals Evaluation of Rainwater Quality in Different Areas of Dhaka City

2021 ◽  
Vol 8 (9) ◽  
pp. 168-172
Author(s):  
Md. Sazzadul Haque ◽  
◽  
Fatema Naznin Rinkey ◽  
Keyword(s):  
Water Quality ◽  
Rainwater Harvesting ◽  
World Health ◽  
Dhaka City ◽  
Water Quality Standards ◽  
Health Organization ◽  
Motorized Vehicles ◽  
Rainwater Quality ◽  
Construction Works

Since rainwater harvesting system was assessed to be potential in residential, industrial, educational and other institutions so the study was focused on the rainwater quality of samples collected from rooftop surface runoff of different locations of Dhaka city which is the 2nd most polluted city of the world. Locations were based upon residential, commercial, industrial zone within the area, motorized vehicles use, population, construction works etc. The rooftops were taken mainly of concrete made rooftops and within a single area 03 locations were chosen and a sample of rainwater was collected from a tin made rooftop within that area. The main purpose of this assessment was to compare the rainwater quality of different locations with the drinking water quality standards of Bangladesh and World Health Organization (WHO) in order to observe whether the water needs of further treatment or not for potable use. The samples were checked of physical (Turbidity) and chemical (pH, Electric Conductivity, Total Dissolved Solids, Nitrate, Nitrite, Sulfate, Chloride & Fluoride) characteristics of water quality. In terms of pH, Nitrate and Fluoride values, there were significant imbalance with the standards and thus required treatment for potable use. And other parameters were within the standards.

scholarly journals Water Quality of the Trstionica River (Bosnia and Herzegovina)

2020 ◽  
Vol 69 (7-8) ◽  
pp. 371-376
Author(s):  
Šuhreta Delibašić ◽  
Jasna Huremović ◽  
Sabina Žero ◽  
Sabina Gojak-Salimović
Keyword(s):  
Water Quality ◽  
Bosnia And Herzegovina ◽  
Limit Of Detection ◽  
Weather Conditions ◽  
Ion Exchange Resin ◽  
World Health ◽  
Mean Values ◽  
Significant Difference ◽  
Health Organization

The present study was conducted to investigate the water quality of the Trstionica River, Bosnia and Herzegovina. The physicochemical properties (temperature, pH, conductivity, total solids after evaporation at 105 °C), content of metals (calcium (Ca), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), magnesium (Mg), manganese (Mn), sodium (Na), nickel (Ni), lead (Pb) and zinc (Zn)), and anions (chloride (Cl–), and phosphate (PO43–)) were determined in water samples collected at seven locations during two sampling periods: unstable weather conditions (precipitation), and stable weather conditions (without precipitation). There was a significant difference in the content of individual parameters in the river water depending on the sampling time. For determination of metals concentrations, which were below the limit of detection, a preconcentration method using an ion-exchange resin was applied. The metals concentrations during the rainy day were in the order Ca > Mg > Na > Fe > Cu > Zn > Pb > Mn with mean values of 343, 6.03, 1.94, 0.18, 0.20, 0.03, 0.02, 0.01 mg dm–3, respectively, and during stable weather conditions: Ca > Mg > Na > Cu > Fe > Mn > Zn with mean values of 288, 7.62, 2.38, 0.11, 0.10, 0.01, 0.01 mg dm–3, respectively. Cd, Cr, and Ni concentrations were below limit of detection in both cases. Obtained values were compared with World Health Organization (WHO) regulations. The results showed that the Trstionica River in the investigated part of the stream meets most of the parameters required by the regulations. The correlation between analysed parameters was assessed, as well. Based on the calculated water quality index values, the water of Trstionica River falls into the category of excellent water.

scholarly journals Assessment of Water Quality of Blue Nile River in Sudan

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.

scholarly journals Groundwater quality assessment of Shahdadkot, Qubo Saeed Khan and Sijawal Junejo Talukas of District Qambar Shahdadkot, Sindh

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Muhammad Farooque Lanjwani ◽  
Muhammad Yar Khuhawar ◽  
Taj Muhammad Jahangir Khuhawar
Keyword(s):  
Water Quality ◽  
Principal Component ◽  
Quality Parameters ◽  
World Health ◽  
Coefficient Of Determination ◽  
High Concentration ◽  
Permissible Limits ◽  
Groundwater Samples ◽  
Health Organization

AbstractThe study examines the water quality of Shahdadkot, Qubo Saeed Khan and Sijawal Junejo talukas of Qambar Shahdadkot District, less affected by industrial contamination. A total of 38 groundwater samples were collected and analysed for 28 parameters. The results indicated that 57.89% samples were not suitable for drinking purpose with total dissolved solids above than maximum permissible limit of World Health Organization (WHO) (1000 mg/L). The pH, total phosphate, orthophosphate and nitrite were within WHO limits. The concentration of essential metals more than half samples, fluoride in 60.52% and heavy metals 0–50% were contaminated higher than permissible limits of WHO. The statistical analysis of water quality parameters was also carried out to evaluate coefficient of determination among the parameters, cluster analysis and principal component analysis. Water quality determined for irrigation based on Kelly index (KI), sodium percentage (Na%), chloride–sulphate ratio, sodium adsorption ratio, permeability index (PI), chloroalkaline indices 1 (CAI-1), residual sodium carbonate and chloride bicarbonate ratio indicated that samples (55 to 100%) could be used for irrigation purposes. The consumption of water with high concentration of salts and fluoride above the permissible limits may be a cause of a number of diseases in the area.

Ecological and Geochemical Features of the Underground Waters of the Semipalatinsk Test Site

2020 ◽  
Vol 24 (11) ◽  
pp. 30-35
Author(s):  
G.M. Yessilkanov ◽  
M.T. Dyussembayeva ◽  
L.P. Rikhvanov ◽  
N.Zh. Mukhamediyarov ◽  
A.Zh. Tashekova
Keyword(s):  
Water Quality ◽  
Test Site ◽  
World Health ◽  
Chemical Components ◽  
Underground Waters ◽  
Semipalatinsk Test Site ◽  
Quality Of Water ◽  
The Republic ◽  
Health Organization

The results of the study of ecological and geochemical features and assessment of the water quality of water sources located on the territory of the Semipalatinsk test site are presented. The studied waters are diverse in chemical composition: 14 % of the samples had hydrocarbonate, 69 % – sulfate, and 17 % – chloride types of waters. On the basis of the revealed features of the elemental composition of the underground waters of the Semipalatinsk test site, decreasing series of excess of the average concentrations of elements in water in relation to the composition of waters of the zones of hypergenesis and continental salinization were constructed: U14 > Mo8 > Sr8 > V3 (hypergenesis zone), U5 > Mo3 > Sr3 > V2 (zone of continental salinization). For the groundwater of the Semipalatinsk test site, specific elements were identified, such as U, Mo, Sr and V. The water quality was assessed for the studied chemical components based on comparison with the standards of the Republic of Kazakhstan and the World Health Organization (SaNPiN No. 209, WHO 2011).

scholarly journals Spatial-temporal variation and modeling of rainwater quality

2021 ◽  
Vol 10 (3) ◽  
pp. e45810313598
Author(s):  
Emmanuel Kennedy da Costa Teixeira ◽  
Letícia Gabriela Andrade Policarpo ◽  
Suely Riciati da Silva ◽  
Eliane Prado Cunha Costa dos Santos
Keyword(s):  
Water Quality ◽  
Temporal Variation ◽  
Suspended Solids ◽  
Rainwater Harvesting ◽  
Drainage System ◽  
Two Cities ◽  
The Subject ◽  
High Concentrations ◽  
Rainwater Quality

Rainwater harvesting (RWH) is an alternative to the problem of water scarcity. However, its quality must be analyzed before its use, so that it does not represent any danger to the consumer. Thus, the objective of this paper was to analyze the spatial-temporal variation of water quality of rainwater in two cities and observe whether its parameters meet the norm related to the subject. In addition, the concentration of total suspended solids (TSS) that flow into the drainage system was also simulated. Rainwater samples were collected at several points in Congonhas and Ouro Branco - MG, over a period of two years. The results showed that there was spatial-temporal variation in water quality. There were points where the quality met the standard in some moments and did not meet in others, due to its temporal variation. It was also observed that the catchment surface influenced the quality of rainwater, so that the water that came into contact with the roof had its quality deteriorated, at first. However, throughout the rainy event, the quality improved, but at certain times, it was not enough to meet the standard. The rainwater quality simulation, carried out at SWMM, showed high concentrations of TSS, which were higher to that allowed for launching into receiving bodies.

scholarly journals An investigation of some water quality properties from different sources in Pelengana commune, Segou, Mali

2018 ◽  
Vol 8 (3) ◽  
pp. 449-458 ◽  
Author(s):  
Amadou Toure ◽  
Duan Wenbiao ◽  
Zakaria Keita
Keyword(s):  
Water Quality ◽  
Principal Component ◽  
World Health ◽  
Quality Properties ◽  
Quality Of Water ◽  
Physical And Chemical Quality ◽  
Health Organization ◽  
Physical And Chemical ◽  
Different Sources

Abstract An assessment of consumer quality perception, as well as some physical and chemical characteristics of water samples sourced from wells, boreholes, and rivers in the locality of Pelengana commune, in Mali, was carried out. The World Health Organization (WHO) Guideline (or other) Values (GVs) for drinking water quality was used as a benchmark. One-way analysis of variance (ANOVA) alongside Duncan's multiple comparison tests for significant differences, and Principal Component Analysis (PCA) were used in analyzing differences and correlations regarding the parameters investigated. Results revealed that the majority of the households (61.2%) regarded wells and river water as unsafe for drinking. The physical and chemical quality of water was affected by climatic season. Also, with the exception of iron (average values), the parameters studied met the WHO GVs. Based on the analyzed parameters, the quality of these different water sources is chemically acceptable.

scholarly journals Perspectives in Water Quality Assessment

2019 ◽  
Vol 8 (2S4) ◽  
pp. 7-11
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Water Quality Assessment ◽  
Machine Learning Algorithms ◽  
National Standard ◽  
World Health ◽  
Index Method ◽  
Quality Of Water ◽  
Health Organization

One can assess the quality of water by water quality index method and it is a mathematical method to evaluate the water quality based on physical or chemical parameters, using WQI one can evaluate the water quality of both ground water and surface water, while determining the WQI one can use the standards or guidelines provided by some standard organizations like WHO (world health organization), National Standard Body of India (BIS), ICMR (Indian Council for Medical Research) etc. To assign grade to the water samples under study, apart from the WQI there are some other popular techniques used to evaluate water quality they are statistical methods, multivariate statistics, neural networks, fuzzy logic and machine learning algorithms. The aim of this study is to give insight into various methods used or developed to evaluate water quality of both ground and surface water by earlier research works.

Spatial And Seasonal Variation For Water Quality Indices of Gomal Zam Dam And Its Tributaries In The South Waziristan District, Pakistan

2021 ◽  
Author(s):  
Said Muhammad ◽  
Insha Ullah
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Winter Season ◽  
World Health ◽  
Dominant Factor ◽  
Water Characteristics ◽  
Quality Of Water ◽  
Spatial And Seasonal Variation ◽  
Health Organization

Abstract This study investigated the quality of water in the Gomal Zam Dam and its tributaries, south Waziristan District, Pakistan. For this purpose, water samples were collected from the Gomal Zam Dam and its tributaries in the winter and summer seasons (n=24 in each season). Water samples were analyzed for the anions using a multi-parameter analyzer (CONSORT 6030, Belgium) and cations by the Atomic Absorption Spectrophotometer (AAS, AAnalyst 700, PerkinElmer). Water characteristics were compared and found within drinking water guidelines set by the world health organization (WHO), except turbidity. Water characteristics were evaluated for the water quality index (WQI) and sodium hazards such as sodium adsorption ratio (SAR) and sodium percentage (Na%). Based on WQI and sodium hazards, the water of Gomal Zam Dam and its tributaries were observed as good and in permissible levels for drinking and irrigation water, respectively. The winter season has slightly poor water quality compared to the summer season due to higher contamination. Gibbs’s and Piper's models showed that the water quality of Gomal Zam Dam and its tributaries was mainly characterized by the weathering of bedrocks. The studied water is classified as Na-Cl type and Mg-HCO3 types in the summer and winter seasons, respectively. Statistical analyses revealed that geogenic sources of rock weathering are the dominant factor for controlling the water quality of the area.

scholarly journals Microbial contamination of non-household drinking water sources: a systematic review

2018 ◽  
Vol 8 (3) ◽  
pp. 374-385 ◽  
Author(s):  
Lydia Abebe ◽  
Andrew J. Karon ◽  
Andrew J. Koltun ◽  
Ryan D. Cronk ◽  
Robert E. S. Bain ◽  
...  
Keyword(s):  
Systematic Review ◽  
Water Quality ◽  
Drinking Water ◽  
Health Care Facilities ◽  
World Health ◽  
Mass Gatherings ◽  
Thermotolerant Coliforms ◽  
Unsafe Water ◽  
Health Organization

Abstract Drinking water in non-household settings (e.g. schools, health care facilities (HCFs), restaurants, and mass gatherings) that is free of contamination is important for human health, especially in settings with vulnerable populations who are more at risk from the use of unsafe drinking water, such as immunocompromised patients in HCFs and children at school. Few studies have characterized water quality in non-household settings. We examined the quality of drinking water in non-household settings using studies identified through a previous systematic review. This review evaluated the quality (Escherichia coli, thermotolerant coliforms, and total coliforms) of drinking water in non-household settings. We found that drinking water in non-household settings is often non-compliant with health-based standards as defined by the World Health Organization. More research is necessary to determine the extent to which drinking-water quality in non-household settings differs from community settings to better understand how to effectively and appropriately address their challenges unique to safe water in non-household settings. This is of particular relevance to public health since people spend much of their day outside the home where they may consume unsafe water.

scholarly journals HYDROCHEMICAL FACIES DESCRIPTION TO ASSESS THE WATER QUALITY OF HABBANIYA LAKE, IRAQ

2020 ◽  
Vol 53 (2F) ◽  
pp. 94-107
Author(s):  
Mahmood Al-Kubaisi
Keyword(s):  
Water Quality ◽  
Major Ions ◽  
Hydrochemical Facies ◽  
World Health ◽  
Total Hardness ◽  
Line Diagram ◽  
Class 1 ◽  
Health Organization ◽  
Dominant Cation

The present study depicts the hydrochemical processes controlling the variance in the hydrochemical facies for sixteen samples obtained from Habbaniya Lake. The water samples were analyzed for the major ions (cations and anions) data in mg/l, total dissolved solids in mg/l, pH unitless, electrical conductivity in μS/cm, and temperature in °C. Piper trilinear (three-line) diagram indicates the overall of samples belongs to class 1 (Ca2+, Mg2+, Cl-, SO42-), category I (SO42- - Cl- and Ca2+ - Mg2+), and permanent total hardness (calcium chloride type). The contribution of cations in the Habbaniya lake was almost the same percentage (no dominant cation), while the SO42- is the dominant ion of the surface water in the Habbaniya lake. The analytical values showed that overall the samples were freshwater and low enrichment salts within the permissible limits of the World Health Organization standards. Irrigation parameters and water quality index were calculated for samples to assess water for agricultural and drinking uses for the inhabitants of the study area. The basic exchange is the exchange of Na+ and K+ ions in water with Mg2+ and Ca2+ ions in materials which is exposed to weathering.

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