scholarly journals Hydrochemical investigation of the wells water in Bayanzurkh, Ulaanbaatar

2020 ◽  
pp. 63-69
Author(s):  
Odontuya G ◽  
Oyuntsetseg D ◽  
Khureldavaa O ◽  
Tsiiregzen A ◽  
Dulamsuren G ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Samples ◽  
National Standards ◽  
National Standard ◽  
World Health ◽  
Total Hardness ◽  
Chemical Compositions ◽  
Well Waters ◽  
Microbiological Properties

This study aimed to determine water-rock interactions depending on mineralization and assess to detailed water quality  study of the well waters for drinking purpose in Bayanzurkh district. Totally, 55 well water samples were collected from 7subdistricts of Bayanzurkh district. Determinations of the all sample are performed by water quality parameters such as radiological, physico-chemical and chemical compositions and microbiological properties. The chemical data illustrates that the well waters were neutral to slightly alkaline, and total hardness observed in 46 water samples was soft to softer and 9 water samples was hard to very hard. The hydrochemical data indicates that 53 well waters belong to the HCO3- - Ca2+, Mg2+ type, and others are HCO3-- Mg2+ and SO42--Na+ type of water. The results were compared with National standard (MNS 0900:2018) and with World health organization (WHO, 2017) guidelines for drinking water quality. Among these 25 well waters were overrated by permissible concentration of MNS 0900:2018 and WHO guidelines for the following radiological, chemical compositions and microbiological properties. However, 30 well waters were suitable for drinking water by their permissible value of national standards. According to the Gibbs diagram, all studied well waters were belonging to the rock-water interaction dominance area which was indicated by hydrochemical processes. Баянзүрх дүүргийн гүний худгуудын усны гидрохимийн судалгаа Хураангуй: Энэхүү судалгаагаар Баянзүрх дүүргийн иргэдийн унд ахуйн хэрэгцээндээ ашиглаж буй гүний худгийн усанд нарийвчилсан судалгааг явуулсаны үндсэн дээр усны чанарыг үнэлэх мөн эрдэсжилтээс хамааруулан ус чулуулгийн харилцан үйлчлэлийг тодорхойлох зорилгоор энэхүү ажлыг хийж гүйцэтгэсэн. Баянзүрх дүүргийн 7 хороонд байрлах унд ахуйн зориулалтаар ашигладаг 55 гүний худгийн усны сорьцонд физик-хими, химийн найрлага, микроэлемент, бичил амь судлал болон цацрагийн аюулгүйн үзүүлэлтүүдийг тодорхойлсон болно. Судалгаанд хамрагдсан гүний худгуудын ус нь саармагаас сул шүлтлэг орчинтой, зөөлнөөс зөөлөвтөр устай 46 худаг, хатуувтараас хатуу устай 9 худаг байгаа ба 53 гүний худаг нь HCO3- - Ca2+, Mg2+-ийн төрлийн, бусад нь  HCO3-- Mg2+  болон SO42--Na+  төрлийн усны ангилалд хамаарагдаж байна. Баянзүрх дүүргийн иргэдийн унд ахуйн хэрэгцээндээ ашиглаж буй нийт 55 гүний худгийн ус судалгаанд хамрагдсанаас 25 худгийн ус нь зарим анион, катион болон бичил амь судлал, цацрагийн аюулгүйн үзүүлэлтээрээ Монгол улсад мөрдөгдөж байгаа ундны усны стандарт MNS 0900:2018 болон Дэлхийн Эрүүл Мэндийн байгууллагаас гаргасан улс орнуудын мөрддөг ундны усны стандарт шаардлагыг хангахгүй байна. Харин 30 гүний худгийн ус нь бүх үзүүлэлтээрээ Монгол улсад мөрдөж буй MNS 0900:2018 стандартын шаардлагыг хангаж байна. Ус, чулуулгийн харилцан үйлчлэлийг Гиббсийн диаграмм ашиглан тодорхойлоход худгуудын ус нь чулуулаг давамгайлсан мужид оршиж байгаа нь худгийн усны найрлага тухайн орчны геологийн тогтоц болон чулуулгаас хамаарч байгаа бөгөөд ус, чулуулгийн харилцан үйлчлэлд орж байна. Түлхүүр үг: Баянзүрх дүүрэг, ундны ус, химийн найрлага, гүний худаг, ус, чулуулаг

scholarly journals Metalliferous content of drinking water and sediments in storage tanks of some schools in Erbil city, Iraq

2020 ◽  
Vol 9 (3) ◽  
Author(s):  
Hawraz Sami Khalid ◽  
Hoshyar Saadi Ali ◽  
Dhary Almashhadany
Keyword(s):  
Heavy Metals ◽  
Water Quality ◽  
Heavy Metal ◽  
Drinking Water ◽  
Water Samples ◽  
World Health ◽  
Storage Tanks ◽  
Quality Indices ◽  
Toxic Heavy Metals ◽  
Water Quality Indices

The present study was conducted to evaluate the quality of drinking water in randomly selected schools in Erbil city, Kurdistan Region, Iraq. The water quality indices such as the Heavy metal Pollution Index (HPI) and Heavy metal Evaluation Index (HEI) were applied to characterize water quality. Eighteen schools were incorporated and sampled for their water storage tanks available to students. Water samples and sediment samples from tanks floor were analyzed by Inductively Coupled Plasma Optical Emission Spectrometer for the determination of twenty-two metal elements. In drinking water samples, all detected metals did not exceed the permissible limits of the World Health Organization. The results of this study showed that the average values of HPI and HEI for As, Cd, Cr, Cu, Fe, Pb, Mn, Ni, and Zn were 54.442 and 0.221, respectively. According to data of the water quality indices, the schools drinking water quality are good and suitable for drinking in terms of heavy metals. However, sediments samples contained high concentrations of all elements including the toxic heavy metals (As, Cd, Cr, and Pb). Re-suspension of sediments into water column after refilling storage tanks can pose a serious threat to students drinking water from such vessels. It is therefore recommended that proper storage tanks are provided to the schools accompanied by continuous sanitation and hygiene practice to mitigate the corrosion of tanks to avoid health risks of toxic metal

scholarly journals IMPACTS OF DUMPSITE ON SOIL AND GROUNDWATER QUALITY: A CASE STUDY OF ERINFUN COMMUNITY, ADO EKITI, SOUTHWESTERN NIGERIA

2021 ◽  
Vol 5 (2) ◽  
pp. 112-116
Author(s):  
F., F. Akinola ◽  
M., O. Lasisi ◽  
B., S. Awe
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Sample ◽  
Biochemical Oxygen Demand ◽  
Water Samples ◽  
Physicochemical Parameters ◽  
Oxygen Demand ◽  
Soil Samples ◽  
World Health ◽  
Health Organization

Groundwater pollution has increased as a result of poor waste disposal practices in developing countries. The purpose of this study was to determine the levels of physicochemical parameters and heavy metal concentrations in order to investigate the impact of dumpsites on groundwater and soil quality in Erinfun community. Four (4) water samples were collected hand dug well and four (4) soil samples designated Ss1 to Ss4 were collected at distances of 10, 20, 30 and 40 m, respectively, away from the waste dumpsite. Physicochemical parameters and traces such as odour, colour, taste and temperature, as well as Biochemical Oxygen Demand, Chemical Oxygen Demand, Dissolve Oxygen, Total Dissolve Solid, pH, and chloride were measured in collected water samples. Collected soil samples were also analyzed for heavy metals such as Magnesium, Zinc, Iron, Chromium, and Lead. All the physical parameters of the water samples analysed were found not to be within the acceptable limit of World Health Organization and Nigerian Standard of Drinking Water Quality standards. The chemical constituents tested were within the acceptable limit of World Health Organization and Nigerian Standard of Drinking Water Quality except for the Biochemical Oxygen Demand, Chemical Oxygen Demand and Dissolve Oxygen of water samples 1 and 2, respectively. The concentration of trace metals in water sample test were within health limit except for Magnesium and Iron which has the highest concentrations in water sample 1 at 10 m away from dumpsite (61.00 mg/l and 0.46 mg/l). Consequently, open dumpsites are discouraged, and constructed standard landfills with appropriate monitoring guidelines are recommended.

scholarly journals Bacteriological and Physicochemical Assessment of Water Quality of the Public Swimming Pools in Klang Valley Malaysia

2020 ◽  
Author(s):  
Muhammad Naim Rosli
Keyword(s):  
Water Quality ◽  
Water Samples ◽  
Physicochemical Parameters ◽  
National Standard ◽  
World Health ◽  
Personal Hygiene ◽  
Plate Count ◽  
Total Bacterial Count ◽  
Swimming Pools

Abstract Background: Water is essential for life and it been used for various activities such as drinking, bathing, and recreational purposes and also one of the modes of the transmission of the disease.Objective: The objective of this study to assess the presence of bacteriological and physicochemical quality of swimming pools’ water in Lembah Klang, Malaysia.Methodology: Seven water samples collected from outdoor and indoor swimming pools (hotel, apartment, and public swimming pool) in Lembah Klang, Malaysia. Water samples were collected in sterile bottles (30 ml). Physicochemical parameters were determined using water quality testing kit pH & chlorine apparatuses. The water sample was cultured and incubated. The presence of bacteria was counted by the total bacterial count method.Result: The ranges of mean values of the various chlorine level parameters of the selected water samples investigated for the apartment, hotel, and municipal were, 0.56±1.01, 0.77±0.95, and 1.19±0.91. All the physicochemical parameters except conductivity values were within the permissible limits of the World Health Organization (WHO) standards 2006 and American National Standard for Water Quality in Public Pools and Spas (ANSI/APSP) 2015. The mean, standard plate count of water samples from the selected apartment, hotel, and municipal’s swimming pools were, 28407.14±28469.05, 8192.86±10556.36, and 3257.14±6250.17which above the WHO Guideline limit, thus signifying contamination.Conclusion: The study recommends improvement in the personal hygiene of swimmers, adequate cleansing of the pools, and enforcement of standards by the government.

Assessment of drinking water quality within amalgamated territorial communities

2021 ◽  
Vol 6 (4) ◽  
pp. 201-210
Author(s):  
Ruslana Valerko ◽  
◽  
Liudmyla Herasymchuk ◽  
Yevgenii Hurskyi ◽  
Anastasiya Pavlenko ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Water Samples ◽  
Pure Water ◽  
Local Population ◽  
National Standards ◽  
Drinking Water Quality ◽  
Nitrate Content ◽  
Rural Settlements

One of the main problems of rural residential areas is to provide the local population with quality drinking water, which is a major factor influencing their health. To solve this problem, it is necessary to implement effective measures not only at the state level but also at the regional and local levels. The main purpose of decentralization of power is to transfer the power and appropriate financial resources to the lowest levels of local self-government, which makes it possible for created amalgamated communities to use these resources to solve the priority issues. However, to determine the ecological state of rural settlements in the subsystem of drinking water quality, it is necessary to assess its quality in the territory where the community is situated. The investigation was carried out in 15 rural settlements of the Teterivka amalgamated community of the amalgamated Zhytomyr district. 36 water samples were selected from the sources of non-centralized water supply. Water quality classes were determined following DSTU (National Standards of Ukraine) 4808:2007 “Sources of Centralized Drinking Water Supply. Hygienic and Environmental Requirements for Water Quality and Selection Rules”. As a result, it has been established that nitrates make the largest contribution to the pollution of drinking water. In 47% of the selected samples, the nitrate content on average exceeded the norm; and in 46.7% of the investigated settlements, water belongs to quality class 4, defined as “mediocre”, “partially potable” of undesirable quality. A critical situation was recorded in the villages of Mykhailivka, Nova Rudnia and Staroshiika, where the nitrate content in all selected samples of the well water exceeded the norm. On average, 61% of the selected water samples did not meet the standard and were below the standard. According to the pH indicator, the quality classes vary from “excellent”, very pure water grading to the class of “good”, pure water of the desired quality to “satisfactory”, slightly contaminated water of acceptable quality. The total iron content exceeded the standard in 5.6% of the selected samples.

scholarly journals Assessment of Drinking Water Quality of Madhyapur-Thimi and Study of Antibiotic Sensitivity against Bacterial Isolates

1970 ◽  
Vol 10 ◽  
pp. 167-172 ◽  
Author(s):  
Bina Laxmi Jayana ◽  
Tista Prasai ◽  
Anjana Singh ◽  
Kayo Devi Yami
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Samples ◽  
Enteric Bacteria ◽  
Drinking Water Quality ◽  
National Standard ◽  
Guideline Value ◽  
Guideline Values ◽  
Who Guideline

The study was undertaken to assess the existing status of drinking water quality of Madhyapur-Thimi. A total of 105 water samples comprising 50 (47.61%) wells, 45 (42.82%) tap water and 10 (9.52%) stone spouts were randomly collected. The physicochemical and microbiological parameters were analyzed following standard technique. The pH (1.9%), conductivity (34.28%) and turbidity (16.19%) of water samples had crossed the permissible guideline values as prescribed by WHO and national standard. All samples contained nitrate values within the WHO permissible value as well as national standard but hardness (2%), chloride (2.85%), iron (26.66%), ammonia (11.42%), and arsenic content (1.90%) crossed the WHO guideline value but none of the water samples crossed the national standard for arsenic. Arsenic having 0.025mg/l (25ppb) was detected from two well water samples, Makanani well and Ajimanani well. Total coliform count showed 64.76% of samples crossed the WHO guideline values. Eleven different kinds of enteric bacteria were isolated from different sources, Enterobacter spp. being the predominant. Isolates were subjected for antibiotic susceptibility pattern using ten antibiotics. Among total isolates, resistance was directed to 79.5% Erythromycin, 62.67% Penicillin G, 61.9% Amoxycillin, 34.5% Ampicillin, 21.1% Tetracycline, 15.4% Ceftriaxone, 14.7% Amikacin, 14.7% Cephotaxine, 5.6% Chlorophenical and 5.6% Ofloxacin respectively.Key words: Coliform; Enteric bacteria; Permissible value; Physicochemical; Antibiotic resistanceDOI: 10.3126/njst.v10i0.2955Nepal Journal of Science and Technology Vol. 10, 2009 Page: 167-172

scholarly journals Ground Water Quality of Gandhinagar Taluka, Gujarat, India

2008 ◽  
Vol 5 (3) ◽  
pp. 435-446 ◽  
Author(s):  
Mayur C. Shah ◽  
Prateek G. Shilpkar ◽  
Pradip B. Acharya
Keyword(s):  
Water Quality ◽  
Dissolved Oxygen ◽  
Water Samples ◽  
Oxygen Demand ◽  
Total Alkalinity ◽  
World Health ◽  
Total Hardness ◽  
Drinking And Irrigation ◽  
Quality Of Water

Present communication deals with study of physico-chemical parameters such as pH, electrical conductivity (EC), total dissolved solids (TDS), total alkalinity (TA), calcium hardness (CaH), magnesium hardness (MgH), total hardness (TH), chloride (Cl-), fluoride (F-), sodium (Na+), potassium (K+), dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD) and sulphate (SO42-) of water samples of bore wells of forty villages of Gandhinagar taluka of Gujarat state,India. The experimental values of water samples were compared with standard values given by World Health Organization (WHO) and United State Salinity Laboratory for drinking and irrigation purposes respectively. Water Quality Index (WQI) was also calculated to know the over all quality of water samples. The statistical analysis like mean, standard deviation (SD), coefficient of variance (% CV), analysis of variance (ANOVA),t-test, coefficient of correlation (r) and regression analysis of obtained data were carried out. The results show that the quality of water is poor and quite good for drinking and irrigation purposes respectively. The variance was found significant at 1% level of significance in case of sodium and potassium content and at 5% in case of total alkalinity and dissolved oxygen among the four regions (North, South, East and West) of Gandhinagar taluka. The linear relation also established for each pair of water quality parameters of studied water samples.

scholarly journals Evaluation of Drinking Water Quality in Schools in a District Area in Hanoi, Vietnam

2020 ◽  
Vol 14 ◽  
pp. 117863022095967
Author(s):  
Dang The Hung ◽  
Vu Thi Cuc ◽  
Vu Thi Bich Phuong ◽  
Dao Thi Thanh Diu ◽  
Nguyen Thi Huyen Trang ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Samples ◽  
Primary Schools ◽  
Tap Water ◽  
Total Iron ◽  
Drinking Water Quality ◽  
National Standard ◽  
Taste And Odor

Background: Drinking water quality affects directly human health. Assessment and prevention of water-borne diseases are crucial for primary prevention, especially for children. Objective: The main aim of this study was to investigate the quality of drinking water from tap water in preschools and primary schools in a district area in Hanoi City, Vietnam. Methods: A cross-sectional study was performed from August to October 2019. Water samples from tap water of 154 schools in a district area of Hanoi were collected to determine the quality of drinking water. From each school, at least 2 bottles of water samples were collected on the basis of a standard operating procedure (SOP). Each water sample was analyzed for microbial and physicochemical parameters, including Color, Taste and Odor, Turbidity, pH, Nitrite, Nitrate, Ammonium, Total Iron, Permanganate, Chloride, Hardness, Total Manganese, Sulfate, Arsenic, Coliform, and E.coli, by analytical methods. The obtained values of each parameter were compared with the standard values set by WHO and National Technical Regulation on Domestic Water Quality of Vietnam. Results: All of the schools employed community water system as a main source for drinking water. The results showed that all tested samples were found to be within the standards for some physicochemical properties, including Color, Taste and Odor, Hardness, Chloride, Total Iron (Fe2+ và Fe3+), Total Manganese (Mn), Nitrate (NO3–), Sulfate (SO42–), and Total Arsenic (As). On the other hand, some samples did not meet the allowable limits of the national standard, due to pH (3.9%), Turbidity (0.6%), Nitrite (3.2%), Permanganate (6.5%), and Ammonium (5.8%). Furthermore, the microbial data revealed that the substandard water samples from municipal water systems were contaminated by Coliform (9.7%) and/or E.coli (7.8%). Conclusions and recommendations: Contaminants such as bacterial and chemical agents in to drinking water could be occurred during transport, storage and handling before using by the consumer without regular surveillance. A periodic treatment procedure and monitoring system to keep the level of microbial and chemical contamination of drinking water in schools under control should be performed.

An analysis of ground water quality in a water stressed urban centre: a case of Gweru city, Zimbabwe

2016 ◽  
Vol 11 (2) ◽  
pp. 329-341
Author(s):  
C. Mukanga ◽  
T. Chitata ◽  
B. T. Mudereri
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Ground Water ◽  
Health Risks ◽  
World Health ◽  
Total Hardness ◽  
Physical Parameters ◽  
Biological Parameters ◽  
Ground Water Quality ◽  
Filtration Method

Ground water quality conformance to the World Health Organisation standards for drinking water was carried out and inferred to the health risks associated with use of such quality of water. Water samples were collected thrice a month, from nine boreholes, over a period of twelve months and analysed for physical, chemical and biological parameters. Chemical parameters were tested using UV-Vis photometry. Physical parameters were measured using HI9829 waterproof portable logging multi-parameter meter and biological parameters were determined using the Minimal Media ONRG-MUG test and the Membrane Filtration Method (MF). Results shows that total hardness and Fe concentration were above limit in 78% and 56% of the sampled boreholes, respectively. pH, EC, Ca, Cl, Fl, Mn, Mg and Turbidity were within the acceptable WHO limits. Of the sampled boreholes, 67% were not conforming to the Escherichia coli loads recommended for drinking water. Parametric correlations showed strong and significant correlations between chlorides and fluorides (r = 0.68; p < 0.05), Nitrates and Sulphates (r = 0.78; p < 0.05). There is need to treat borehole water to eliminate E. coli and reduce nitrates and total hardness. Furthermore, analysis and monitoring systems to determine temporal variability and health risks, respectively, needs to be put in place.

scholarly journals Groundwater quality assessment near a Nigerian dumpsite

1970 ◽  
Vol 10 (5) ◽  
pp. 588-596
Author(s):  
O.A. Mokuolu ◽  
S.O. Jacob ◽  
A.M. Ayanshola
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Ground Water ◽  
Solid Waste ◽  
Oxygen Demand ◽  
Chloride Ion ◽  
World Health ◽  
Total Hardness ◽  
Human Consumption ◽  
Groundwater Assessment

Municipal solid waste collected in Nigeria are often disposed of in uncontrolled dumpsites and/or burnt in the open spaces and consequently causing significant pollution on surface water, ground water and the air. An investigational study was carried out on the level of pollution on groundwater near Gbagede dumpsite in Kwara state. Ground water samples, GW1, GW2, GW3 were taken at three different locations: 186 m, 290 m, and 326 m from the edge of the dumpsite. Physicochemical parameters evaluated include; pH, total hardness, Total Dissolved Solids, Total Suspended Solids, alkalinity, turbidity, Chemical Oxygen Demand, Biochemical Oxygen Demand, Dissolved Oxygen, Nitrate ion, Chloride ion, Sulphate ion, Electrical conductivity, Calcium ion and Magnesium ion using standard laboratory procedures. The results of the evaluations were compared with the World Health Organization (WHO) and Nigerian Standard for Drinking Water Quality (NSDWQ) to establish its suitability for human consumption. Results fell within the stipulated range of WHO and NSDWQ standard for drinking water. It was however observed that the water quality improves with distance from the dumpsite. Statistical analyses indicated mild differences among all the parameters tested for in the samples at 95% confidence level. Uncontrolled accumulation of leachates from the dumpsite may pose potential risk to the source of water for the community in the near future. It was recommended that the dumpsite be relocated from the current residential area.Key Words: Groundwater, Assessment, Contaminants, Solid-waste, Water quality

scholarly journals Temporal Variation of Drinking Water Quality Parameters for Sulaimani City, Kurdistan Region, Iraq

2020 ◽  
Vol 4 (2) ◽  
pp. 99
Author(s):  
Yaseen Ahmed Hamaamin ◽  
Jwan Bahadeen Abdullah
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Samples ◽  
Chemical Properties ◽  
Quality Parameters ◽  
Drinking Water Quality ◽  
World Health ◽  
Quality Of Water ◽  
Physical And Chemical

Water is vital for all forms of life on earth. Assessing the quality of water especially drinking water is one of the important processes worldwide which affect public health. In this study, the quality of drinking water in Sulaimani City is monitored for a study period of 1 year. A total number of 78 water samples were collected and analyzed for 17 physical and chemical properties of water supply system to the city. Samples of water are collected from the three main sources of drinking water for Sulaimani City (Sarchnar, Dukan line-1, and Dukan line-2) from February to August 2019. The results of physical and chemical parameters of collected water samples were compared with the World Health Organization and Iraqi standards for drinking water quality. The results of this study showed that mostly all parameters were within the standards except the turbidity parameter which was exceeded the allowable standards in some cases. This research concluded that, in general, the quality of drinking water at the three main sources of Sulaimani City is suitable and acceptable for drinking.

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