Erratum: Occurrence of pathogenic microorganisms in the Saint Lawrence River (Canada) and comparison of health risks for populations using it as their source of drinking water

2001 ◽  
Vol 47 (10) ◽  
pp. 965-967
Author(s):  
Pierre Payment ◽  
Aminata Berte ◽  
Michèle Prévost ◽  
Bruno Ménard ◽  
Benoît Barbeau
Keyword(s):  
Drinking Water ◽  
Health Risks ◽  
Pathogenic Microorganisms ◽  
Saint Lawrence River

DISINFEKSI UNTUK PROSES PENGOLAHAN AIR MINUM

2018 ◽  
Vol 3 (1) ◽  
Author(s):  
Nusa Idaman Said
Keyword(s):  
Drinking Water ◽  
Water Purification ◽  
Distribution System ◽  
Residual Effect ◽  
Drinking Water Treatment ◽  
Disinfection Byproducts ◽  
Water Disinfection ◽  
Pathogenic Microorganisms ◽  
Microbiological Contamination ◽  
Disinfection Process

Water disinfection means the removal, deactivation or killing of pathogenic microorganisms. Microorganisms are destroyed or deactivated, resulting in termination of growth and reproduction. When microorganisms are not removed from drinking water, drinking water usage will cause people to fall ill. Chemical inactivation of microbiological contamination in natural or untreated water is usually one of the final steps to reduce pathogenic microorganisms in drinking water. Combinations of water purification steps (oxidation, coagulation, settling, disinfection, and filtration) cause (drinking) water to be safe after production. As an extra measure many countries apply a second disinfection step at the end of the water purification process, in order to protect the water from microbiological contamination in the water distribution system. Usually one uses a different kind of disinfectant from the one earlier in the process, during this disinfection process. The secondary disinfection makes sure that bacteria will not multiply in the water during distribution. This paper describes several technique of disinfection process for drinking water treatment. Disinfection can be attained by means of physical or chemical disinfectants. The agents also remove organic contaminants from water, which serve as nutrients or shelters for microorganisms. Disinfectants should not only kill microorganisms. Disinfectants must also have a residual effect, which means that they remain active in the water after disinfection. For chemical disinfection of water the following disinfectants can be used such as Chlorine (Cl2),  Hypo chlorite (OCl-), Chloramines, Chlorine dioxide (ClO2), Ozone (O3), Hydrogen peroxide etch. For physical disinfection of water the following disinfectants can be used is Ultraviolet light (UV). Every technique has its specific advantages and and disadvantages its own application area sucs as environmentally friendly, disinfection byproducts, effectivity, investment, operational costs etc. Kata Kunci : Disinfeksi, bakteria, virus, air minum, khlor, hip khlorit, khloramine, khlor dioksida, ozon, UV.

scholarly journals Drinking water quality in areas impacted by oil activities in Ecuador: Associated health risks and social perception of human exposure

2019 ◽  
Vol 690 ◽  
pp. 1203-1217 ◽  
Author(s):  
Laurence Maurice ◽  
Fausto López ◽  
Sylvia Becerra ◽  
Hala Jamhoury ◽  
Karyn Le Menach ◽  
...  
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Health Risks ◽  
Social Perception ◽  
Human Exposure ◽  
Drinking Water Quality

scholarly journals A systematic review of waterborne disease burden methodologies from developed countries

2014 ◽  
Vol 12 (4) ◽  
pp. 634-655 ◽  
Author(s):  
H. M. Murphy ◽  
K. D. M. Pintar ◽  
E. A. McBean ◽  
M. K. Thomas
Keyword(s):  
Systematic Review ◽  
Drinking Water ◽  
Health Risks ◽  
Distribution System ◽  
National Level ◽  
Developed Countries ◽  
Extreme Weather Events ◽  
Treatment Level ◽  
Waterborne Disease ◽  
True Incidence

The true incidence of endemic acute gastrointestinal illness (AGI) attributable to drinking water in Canada is unknown. Using a systematic review framework, the literature was evaluated to identify methods used to attribute AGI to drinking water. Several strategies have been suggested or applied to quantify AGI attributable to drinking water at a national level. These vary from simple point estimates, to quantitative microbial risk assessment, to Monte Carlo simulations, which rely on assumptions and epidemiological data from the literature. Using two methods proposed by researchers in the USA, this paper compares the current approaches and key assumptions. Knowledge gaps are identified to inform future waterborne disease attribution estimates. To improve future estimates, there is a need for robust epidemiological studies that quantify the health risks associated with small, private water systems, groundwater systems and the influence of distribution system intrusions on risk. Quantification of the occurrence of enteric pathogens in water supplies, particularly for groundwater, is needed. In addition, there are unanswered questions regarding the susceptibility of vulnerable sub-populations to these pathogens and the influence of extreme weather events (precipitation) on AGI-related health risks. National centralized data to quantify the proportions of the population served by different water sources, by treatment level, source water quality, and the condition of the distribution system infrastructure, are needed.

Control of health risks in drinking water through point-of-use systems

2009 ◽  
Vol 54 (12) ◽  
pp. 1996-2001 ◽  
Author(s):  
RuiPing Liu ◽  
JiuHui Qu
Keyword(s):  
Drinking Water ◽  
Health Risks ◽  
Point Of Use

Giardia, Cryptosporidium, and Cyclospora and Their Impact on Foods: A Review

1999 ◽  
Vol 62 (9) ◽  
pp. 1059-1070 ◽  
Author(s):  
JOAN B. ROSE ◽  
THERESA R. SLIFKO
Keyword(s):  
Health Risks ◽  
Food Industry ◽  
Foodborne Disease ◽  
Pathogenic Microorganisms ◽  
Maturation Period ◽  
Food Borne ◽  
Cryptosporidium Oocysts ◽  
Control And Prevention ◽  
Waterborne Transmission ◽  
And Control

While the risk from pathogenic microorganisms in foods has been recognized for hundreds of years, bacterial agents are generally implicated as the contaminants. Although many outbreaks of gastroenteritis caused by protozoan pathogens have occurred, it is only in the last 3 years that attention has focused on protozoan association with foodborne transmission. Recognized as waterborne parasites, Giardia, Cryptosporidium, and Cyclospora have now been associated with several food-borne outbreaks. The oocysts and cysts of these organisms can persist and survive for long periods of time both in water and on foods. While Cyclospora oocysts require a maturation period, Cryptosporidium oocysts and Giardia cysts are immediately infectious upon excretion from the previous host. As a result, these parasites have emerged as public health risks and have become a concern to the food industry. More than 200 cases of foodborne giardiasis (seven outbreaks) were reported from 1979 to 1990. Four foodborne Cryptosporidium outbreaks (with a total of 252 cases) have been documented since 1993. Cyclospora caused a series of sporadic outbreaks of cyclosporasis throughout North America that have affected over 3,038 people since 1995. Control and prevention of protozoan foodborne disease depends upon our ability to prevent, remove, or kill protozoan contaminants. This review will address the biology, foodborne and waterborne transmission, survival, and methods for detection and control of Giardia, Cryptosporidium, and Cyclospora.

scholarly journals ANALISIS RISIKO KESEHATAN LINGKUNGAN (ARKL) PARAMETER AIR MINUM UNTUK PEKERJA DI KABUPATEN PASURUAN TAHUN 2017

2019 ◽  
Vol 3 (1) ◽  
pp. 61-69
Author(s):  
Linda Agustina
Keyword(s):  
Drinking Water ◽  
Health Risks ◽  
Secondary Data ◽  
Quality Standard ◽  
Chemical Agent ◽  
Laboratory Examination ◽  
Water Parameters ◽  
Environmental Health Risks ◽  
Living Things ◽  
Risk Characteristics

Water is a basic necessity for life that most importance substance. Water must be available sufficiently in quality, quantity and continuity for human survival. Ideal drinking water should be clean, colorless, non-sticky and odorless. Drinking water should not contain pathogenic germs and all living things that endanger human health, do not contain chemicals that can change bodily functions and can be economically harmful. The purpose of this study is to analyze environmental health risks in drinking water parameters for workers in Pasuruan Regency in 2017. The method of this research is by collecting secondary data, which is 32 points of location of drinking water in Pasuruan Regency. Secondary data were obtained from the results of laboratory tests, and data on the various parameters of BBTKLPP laboratory examination along with SNI and related regulations and literature from several sources to support the available data. Then the secondary data obtained is calculated the maximum and minimum of concentration values, intake and health risk characteristics of each chemical agent in the parameters of drinking water. The research results show that the concentration of Fe in drinking water exceeds the predetermined quality standard, namely Cmax 0.8364.

Concentrations and potential health risks of strontium in drinking water from Xi'an, Northwest China

2018 ◽  
Vol 164 ◽  
pp. 181-188 ◽  
Author(s):  
Hui Zhang ◽  
Xue Zhou ◽  
Luobin Wang ◽  
Wendong Wang ◽  
Jinlan Xu
Keyword(s):  
Drinking Water ◽  
Health Risks ◽  
Northwest China ◽  
Potential Health
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