• Journal of Korean Society of Water and Wastewater
• /
• v.22 no.6
• /
• pp.665-672
• /
• 2008

It is necessary to implement the management plan for the production of safe and high quality drinking water from lake Paldang. To set up the plan, the water quality items such as BOD, T-P, SS and coliform were monitored for ten years, 1997~2006, and the influence of raw water quality on the drinking water treatment process and the treated water quality was also evaluated from 2004 to 2006. In conclusion, water quality items such as turbidity(SS), T-P(eutrophication), pathogens(fecal coliforms, enterovirus, reovirus, giardia, cryptosporidium), DOC(precursor of disinfection by-products), and micro-pollutants(phthalates, VOCs, heavy metals) are should be managed to get safe and high quality drinking water from lake Paldang.

• Journal of Environmental Health Sciences
• /
• v.10 no.1
• /
• pp.21-31
• /
• 1984

The purpose of this study was to find out more effective schemes on safe water supply in rural area. Then, this study was carried out to investigate drinking water qualities of 20 simple piped water supply systems and 20 water pumps in Chun Sung County, Kang Won Province from 12th December to 24th December, 1983 and was compared this results with the previous results that had been carried out at the same sample sites from 1st July to 30th August, 1981. 1. This results of water quality in winter are better than the previous results in summer because this results are identified as safe 20%, unsafe 35% in simple piped water supply systems, safe 50%, unsafe 20% in water pumps and the previous results are identified as safe 1.8%, unsafe 78.6% in simple piped water supply systems, safe 5.5%, unsafe 73.6% in water pumps. 2. Water qualities of water pumps are better than that of simple piped water supply systems because the former is identified as safe 50%, unsafe 20% and the latter is identified as safe 20%, unsafe 35%. 3. Drinking waters that are in need of chlorination in winter as well as summer are 45% of simple piped water supply systems and 30% of water pumps.

• Journal of Environmental Health Sciences
• /
• v.9 no.1
• /
• pp.77-84
• /
• 1983

A study was carried out to find drinking water qualities of 56 simple piped water supply systems and 37 water pumps in Chun Sung Conutry, Kang Won Province from 1st July to 30th August 1981. 1. The results of all kinds of water test are found to be safe at only one out of fifty six samples of simple piped water supply system at two out of thirty-seven samples of water pump and unsafe at the others. 2. In general Count of Bacteria test, twelve (21.4%) out of fifty six samples of the simple piped water are found to be safe for the legitimate standard of safty water, and five (13.5%) out of thirty=seven samples of pump water. 3. Escherichia coli group is negative at seven (12.5%) out of fifty-six samples of simple piped water, and eight (21.6%) out of thirty-seven samples of pump water. 4. The results of the physical and chemical examination of drinking water specimen are found to be safe at twelve out of fifty-six samples of simple piped water and at twenty-eight out of thirty-seven samples of pump water.

• Journal of Environmental Health Sciences
• /
• v.33 no.6
• /
• pp.517-521
• /
• 2007

To assess possible risks from the consumption of drinking water from various sources, a survey of the microbiological quality of tap water, commercial bottled drinking water which is exploited from natural mineral water, and natural spring water was conducted. A total of 4 different brands of commercial bottled drinking water, and 4 types of spring water from different sources, and tap water from 4 private houses were tested for four index microorganisms, and the microbial quality changes of the water during the storage at room temperature or refrigerated temperature for 7 days. Aerobic plate counts of all of the initial water samples were still within 100 CFU/ml (drinking water standard of Korea). Total coliforms, fecal coliforms, and E. coli were not detected in all of the water samples at initial. However, aerobic plate counts of three types of spring water and three types of bottled drinking water stored at room temperature showed higher levels than the standards in 5 days. Total coliforms were detected in three types of spring water after one day's storage at room temperature, and in one type of bottled drinking water after 5 days' storage. These results indicate that some of the spring water surveyed are not safe to drink, and the spring water and bottled drinking water after opening the lid should not be stored at room temperature, if they are used for drinking.

• The Journal of the Korea Contents Association
• /
• v.15 no.3
• /
• pp.336-351
• /
• 2015

This paper aims at investigating feasibility of social enterprise approach to water poverty, especially access to safe drinking water issue. Now. over 780 millions of people have no improved access to safe drinking water, which result in various diseases and high mortality in people of developing countries. Recently there is more growing interest on BOP business, a market approach which utilize vitality, innovativeness and profit motives of private business to tackle social problem like poverty. Many BOP businesses have been conducted in the form of social enterprise. In the paper, firstly the severe problems of no improved access to clean and safe drinking water were explained. Secondly, the potential of BOP business to address these problems was explored. Thirdly, some actual cases of social enterprises which successfully run their business were introduced. Fourthly, some business models for social enterprise to want to come into water market were discussed. Finally based on these discussions, some recommendation for Korean companies and government were also suggested.

• 수도
• /
• s.28
• /
• pp.27-36
• /
• 1983

Oxidation process constitute an important and often indispensable measure in the reliable production of safe drinking water. Optimal introduction of oxidation processes into the treatment of drinking water requires an exact knowledge of the reactions taking place and of their interrelationships. It is the aim of this paper to review the necessary knowledge in summarized form.

• Advances in environmental research
• /
• v.6 no.3
• /
• pp.203-216
• /
• 2017

For survival of human beings clean water is an essential commodity whereas contamination in drinking water threatens to mankind. The main cause of water contamination is social and development activities of human being along with increasing population. The community in the study area has acute shortage of drinking water along with about 40 to 60% has no access to safe drinking water. This study indicates drinking water quality of two major sources of coastal belt of Karachi one is supplied by Karachi Water & Sewerage Board (KWSB) as tap water and the other through groundwater. The physicochemical analysis was carried out by following the standard methods for checking the quality of drinking water. The analyzed results showed that the quality of groundwater was unfit as potable water. The most critical situation was observed as high level of contamination followed by high turbidity and increased salinity levels. TDS in surface water were found 12% above and TDS in groundwater was 20% below the National Drinking Water Quality Standards (NDWQS) of Pakistan as well as the permissible WHO drinking water quality guidelines.

• Hwankyungkyoyuk
• /
• v.3 no.1
• /
• pp.125-129
• /
• 1992

The purpose of this study was to investigate the condition of school water supply systems and to provide a way to supply safe and sanitary water in schools. In 1991 present, 56.9% of schools in the whole nation are provided with water supply system. And in urban schools, the percentage of small water supply system was larger than that in city. In the survey on water quality of supply water in Seoul city, the items violating the water quality standard were total bacteria, Zinc and Manganse. For supply the safe drinking water changing the old water mains and executing periodical water quality surveys are needed in addition regulations on school supply water and sanitation are also necessary to the drinking water management in schools.

• Journal of Korean Society on Water Environment
• /
• v.27 no.1
• /
• pp.1-8
• /
• 2011

Although Nepal is naturally bestowed with ample water resources, not all of the population has access to safe and clean drinking water. Waste water treatment is almost nonexistent. In the recent days the flow of population in the urban areas has increased the existing challenges of providing safe water and promoting sanitation. The prevalence of water borne diseases is high. This paper presents overview of issues like water pollution, arsenic contamination of drinking water, waste water treatment and effects of water contamination on public health. Comparison between waste water treatment regulations in South Korea and Nepal has also been made. Implementation strategies to tackle the existing water related problem for promoting public health is also recommended.

• Journal of Korean Society of Water and Wastewater
• /
• v.24 no.6
• /
• pp.675-682
• /
• 2010

Groundwater is an essential drinking water source in Gyungbuk, South Korea. The primary source of nitrate in groundwater is from nitrogen fertilizers. Efficient management of a small drinking water plant requires a good understanding of its status such as the objective and the cognition of users. The objective of this study is to understand user situation and produce useful user-friendly policy based on user cognition. Most people who participated in this study, should take their groundwater from a good quality source. Even though they would like to have a good facility for getting safe water, they were reluctant to do it due to the cost used. It means that people who drink groundwater have no idea that health safety is affected by groundwater quality. The volume used depended upon personal activities such as agriculture and stockbreeding. We can easily find groundwater with nitrate that exceeds drinking water standards. Therefore, we have to carry out groundwater management with two categories ; 1) drinking water only and 2) others according to objectives in small drinking water systems.