نتایج جستجو برای: water wells

تعداد نتایج: 560243  

2013
Bixiong Ye Linsheng Yang Yonghua Li Wuyi Wang Hairong Li

Bacterial contamination of drinking water is a major public health problem in rural China. To explore bacterial contamination in rural areas of Beijing and identify possible causes of bacteria in drinking water samples, water samples were collected from wells in ten rural districts of Beijing, China. Total bacterial count, total coliforms and Escherichia coli in drinking water were then determi...

2014
Clemens Karwautz Tillmann Lueders

The microbial monitoring of drinking water production systems is essential to assure water quality and minimize possible risks. However, the comparative impact of microbes from the surrounding aquifer and of those established within drinking water wells on water parameters remains poorly understood. High pressure jetting is a routine method to impede well clogging by fine sediments and also bio...

2017
Osvalda De Giglio Giuseppina Caggiano Francesco Bagordo Giovanna Barbuti Silvia Brigida Federica Lugoli Tiziana Grassi Giuseppina La Rosa Luca Lucentini Vito Felice Uricchio Antonella De Donno Maria Teresa Montagna

According to Italian Ministerial Decree No. 185 of 12 June 2003, water is considered suitable for irrigation if levels of fecal bacteria (i.e., Escherichia coli and Salmonella) are within certain parameters. The detection of other microorganisms is not required. The aim of this study is to determine the bacteriological quality of groundwater used for irrigation and the occurrence of enteric vir...

2008
Bryan R. Swistock Stephanie Clemens William E. Sharpe

This research was sponsored by a grant from the Center for Rural Pennsylvania, a legislative agency of the Pennsylvania General Assembly. The Center for Rural Pennsylvania is a bipartisan, bicameral legislative agency that serves as a resource for rural policy within the Pennsylvania General Assembly. It was created in 1987 under Act 16, the Rural Revitalization Act, to promote and sustain the ...

Journal: :The Science of the total environment 2016
C Joon Chuah Han Rui Lye Alan D Ziegler Spencer H Wood Chatpat Kongpun Sunsanee Rajchagool

In Northern Thailand, incidences of fluorosis resulting from the consumption of high-fluoride drinking-water have been documented. In this study, we mapped the high-fluoride endemic areas and described the relevant transport processes of fluoride in enriched waters in the provinces of Chiang Mai and Lamphun. Over one thousand surface and sub-surface water samples including a total of 995 collec...

2016
Saranjam Khan

used to be previously. At the present time cholera is a problem of the villages. Our present methods of dealing with cholera are of the suppressive rather than preventive type. Any organization for the control of the disease is put into action after an epidemic of cholera has already started; this can never be successful. On the other hand if we can ensure the safety of drinking water in the vi...

2013
Lisa J Molofsky John A Connor Albert S Wylie Tom Wagner Shahla K Farhat

Testing of 1701 water wells in northeastern Pennsylvania shows that methane is ubiquitous in groundwater, with higher concentrations observed in valleys vs. upland areas and in association with calcium-sodium-bicarbonate, sodium-bicarbonate, and sodium-chloride rich waters--indicating that, on a regional scale, methane concentrations are best correlated to topographic and hydrogeologic features...

Journal: :Revista do Instituto de Medicina Tropical de Sao Paulo 2015
Rogerio Tiyo Carla Zangari de Souza Letícia Nishi Camila Fernanda Brustolin Bianca Altrão Ratti Ana Lucia Falavigna Guilherme

The aim of this work was to compare, from a parasitological ( Cryptosporidium spp. and Giardia duodenalis), bacteriological (total and thermotolerants coliforms) and physicochemical perspective, water sources used for drinking and irrigation of vegetables intended to be sold for human consumption. From January 2010 to May 2011, samples of different water sources from vegetable producing propert...

2016
Dennis Guignet Patrick J. Walsh Rachel Northcutt

Few studies have examined the impacts of ground water quality on residential property values. Using a unique data set of well tests, we link residential real estate transactions to home-specific contamination and conduct a hedonic analysis of sales in Lake County, Florida, where pollution concerns relate primarily to agricultural run-off. We find that recent testing and contamination of ground ...

Journal: :Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin 2011
K W Larssen J E Afset B T Heier T Krogh K Handeland T Vikøren K Bergh

From January to March 2011, 39 cases of tularaemia were diagnosed in three counties in central Norway: 21 cases of oropharyngeal type, 10 cases of glandular/ulceroglandular type, two of respiratory and two of typhoid type. Three cases were asymptomatic and clinical information was unavailable for one case. The mean age was 40.3 years (range 2-89 years). Thirty-four reported use of drinking wate...

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