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

Jayana, Bina Laxmi; Prasai, Tista; Singh, Anjana; Yami, Kayo Devi

doi:10.3126/njst.v10i0.2955

Cited by 38 publications

(34 citation statements)

References 2 publications

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“…Overall 301 (51%) groundwater samples crossed WHO guideline values for iron which was also similar to previous studies , Bajracharya 2007, Jayana 2009, Manandhar 2010, Pant 2010. Similarly, 15% of tap and 15% treated water samples were contaminated from iron.…”

Section: Bacteriological Analysissupporting

confidence: 87%

“…Overall, 11 (2%) groundwater samples in which 9 well sample and 2 boring water samples exceeded the WHO recommended values for chloride which was similar to previous studies (Maharjan 2000, Jayana 2009. Chloride in drinking water enters through natural sources, sewage and industrial effluents, urban runoff containing deionizing salts and saline intrusion.…”

Section: Bacteriological Analysissupporting

confidence: 82%

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Drinking Water Quality of Kathmandu Valley

Koju

Prasai

Shrestha

et al. 2015

Nepal Journal of Science and Technology

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This research was conducted to analyze drinking water quality of Kathmandu valley. Total 969 water samples (392 from dug wells, 287 from deep boring, 218 from treated water, 46 from tap and 26 from other water sources) received from different places of Kathmandu, Lalitpur and Bhaktapur districts during March 2012 to March 2013. These samples were analyzed for the determination of physical (pH, temperature, conductivity, turbidity), chemical (hardness, chloride, iron, arsenic, ammonia, nitrate) and microbiological (total Coliform) parameters. It was found that the temperature and nitrate were within the WHO standards while pH, conductivity, turbidity, chloride, iron, arsenic, ammonia, and Coliform bacteria exceeded the WHO standard guideline. In ground water ( well and Boring), pH, conductivity, hardness, turbidity, iron, arsenic, chloride, ammonia and total Coliform count crossed WHO standards as 5%, 2%, 0.8%, 36%, 51%, 0.1%, 2%, 11% and 86 % respectively. Hardness was within the standard in both reated and tap water samples. Compared to treated water, pH, arsenic and chloride were within the standard in tap water. The common problematic parameters of different sources of drinking were turbidity, iron, ammonia and conductivity. Coliform bacteria were found in 36% samples of treated water whereas 80% tap water samples were contaminated from Coliform bacteria.DOI: http://dx.doi.org/10.3126/njst.v15i1.12027Nepal Journal of Science and TechnologyVol. 15, No.1 (2014) 115-120

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Section: Bacteriological Analysissupporting

confidence: 87%

Section: Bacteriological Analysissupporting

confidence: 82%

Drinking Water Quality of Kathmandu Valley

Koju

Prasai

Shrestha

et al. 2015

Nepal Journal of Science and Technology

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“…Generally the natural content of chromium in drinking water is very low ranging from 10 to 50 μg/L except for the regions with substantial chromium deposits (Jayana et al, 2009). Chromium in excess amounts can be toxic especially in the hexavalent form.…”

Section: Resultsmentioning

confidence: 99%

Concentration and Health Implication of Heavy Metals in Drinking Water from Urban Areas of Tigray Region, Northern Ethiopia

Mebrahtu¹,

Zerabruk²

2011

mejs

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The study was undertaken to assess the status of drinking water quality in the urban areas of the Tigray region, northern Ethiopia. A total of 106 drinking water samples were collected from 16 densely populated urban areas of the region, viz.: Alamata, Korem, Maichew, Adigudom, AbyiAdi, Hagereselam, Zalambessa, Adigrat, Edagahamus, Firewoini, Wukro, Mekelle, Indaselassie, Axum, Adwa, and Enticho. All the samples were analyzed for six physicochemical parameters such as temperature, conductivity, total dissolved solids (TDS), salinity, pH, and turbidity and ten heavy metals,viz., As, Cd, Co, Cu, Cr, Fe, Mn, Ni, Pb, and Zn using standard procedures. The results were compared with other national and international standards. Among the analyzed samples, regarding physicochemical parameters, 84.01 % for electrical conductivity, 47.17 % for TDS and 31.13% for turbidity show concentrations higher than the WHO (2008) recommended values. More than 93.4% of the samples were within the United States Environmental Protection Agency (US EPA) admissible pH limit (6.5-8.5) and all the samples analyzed were within the EU (1998) admissible pH limit (6.5-9.5). All samples contain manganese and copper within the WHO (2008) maximum admissible limit, but arsenic (40.3 %), cadmium (7.46 %), chromium (64.18 %), iron (37.31 %), nickel (7 %), and lead (29.85 %) crossed the maximum admissible and desirable limits recommended by WHO (2008). The maximum admissible limit of cobalt in drinking water is not mentioned by WHO, but all the samples analyzed were found to comply the New Zealand (1000 μg/L) and US EPA (100 μg/L) maximum admissible limits. Although no guideline is set by WHO (2008) for Zinc level in drinking water, of the samples analyzed, 94.02% comply the New Zealand standard and 97.01% comply all the maximum admissible limits referred in the present study. In general, the results of the present study have shown that some of the physico-chemical parameters have shown values higher than the WHO (2008) recommended maximum admissible limits. This is an indication of pollution hazards and weak drinking water treatment practices in the areas, which in turn have important human health implications. This study, therefore, recommends the government and other responsible authorities to take appropriate corrective measures.

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“…Studies of K.C (1992), Pradhananga et al (1993), Karmacharya and Pariyar (1999), NESS (1999), ENPHO (2000), Khadka (2001) Bajracharya (2007) and Jayana (2007) also found higher ammonia content in the ground water samples of Kathmandu valley. Presence of ammonia does not always mean that it is due to domestic pollution.…”

Section: Discussionmentioning

confidence: 99%