Monitoring And Analysis Of Drinking Water In Huangdao

ObjectivesThe safty of drinking water at rural area is the the most direct and most practical problems of the peasant masses, as well as the important symbol of the peasants’living conditions. Jiaonan government guarantees health and safety of rural drinking water as one of the priorities of the new health care reform and Twelfth Five-Year Plan. Through this study we intend to understand:1To find out the basic situation of every point which monitored centralized water-supply project of rural drinking water safety at Huangdao District (which also called Jiaonan formerly) during2010-2012.2To get the main unqualified indicators and sample test results of centralized water supply of rural drinking water safety from2010to2012at Huangdao District (Jiaonan), to grasp the differences in water quality during the dry season and the wet season of each rural drinking water monitoring point at Jiaonan.3To find out distribution of drinking water’s physical and chemical indicators of all the villages in the7sub district offices,11towns and2economic areas of HuangDao District(Jiaonan) at2008, combined with Jiaonan’s incidence of malignancy at2008, to investigate the correlation between the two.4To Know the health conditions of urban and rural drinking water at Huangdao District (Jiaonan),to provide the basis for improving the management level of drinking water.Methods 1To investigate the types of water source, the water processing mode, the form of sanitizing and the usage of sterilization equipments in Huangdao.230rural drinking water monitoring points were set up, water samples were gathered in dry season and wet season for testing, and various health indicators were analyzed.3To collect and analyze1379monitoring results of physical and chemical indicators of rural drinking water from Huangdao water company in2008, and combine with the incidence of malignant tumors in Huangdao to analyze the correlation between the two.4To collect and analyze438water samples testing results from huangdao center of disease control, and to explore the change rule of water quality in different years.5Epidata was used for inputting data and SPSS18.0was used for making statistical analysis.Results1Results of rural drinking water monitoring and analysis in Huangdao district (primary Jiaonan city) from2010to20121.1Results of rural drinking water monitoring and analysis in Huangdao district (primary Jiaonan city) in2010Totally,300water samples were collected in the year of2010. As a result, the qualification rate was54.3%, followed by the qualification rate in plentiful water period with21.3%. Additionally, in the dry period the qualification rate was the highest with88.7%. However, a significant difference was found between the two groups (χ2=137.66, P<0.01). Detecting items with lower qualification rate in plentiful water period were total coliform group34.7%), colony count (56.0%), thermotolerant coliform bacteria (62.0%) and nitrate nitrogen(80.0%) in sequence. Detecting items with lower qualification rate in dry period were nitrate nitrogen(90.6%), colony count, total coliform group(96.7%) and thermotolerant coliform bacteria(97.3%) in sequence.1.2Results of rural drinking water monitoring and analysis in Huangdao district (primary Jiaonan city) in2011 Totally,300water samples were collected in2011. Among the results, the qualification rate was(?)%, with (?)and76.7%belonging to the qualification rate in plentiful water period and the qualification rate in dry period respectively. There were significant differences between the two groups (χ2=113.83., P<0.01). Detecting items with lower qualification rate in plentiful water period were total coliform group ((?)%), colony count (?)), thermotolerant coliform bacteria (46.7%), nitrate nitrogen(96.7%) in sequence. Detecting items with lower qualification rate in dry period were total coliform group(85.3%), colony count(90.0%), nitrate nitrogen(93.3%), thermotolerant coliform bacteria(98.0%) in sequence.1.3Results of rural drinking water monitoring and analysis in Huangdao district (primary Jiaonan city) in2012In a sum,120water samples were collected in2012. The qualification rate was74.1%, which was higher than the qualification rate in plentiful water period and the qualification rate in dry period, with65%and71.7%, respectively. Comparison between the two groups, there were not significant differences found in this study.(χ2==0.62., P>0.05). Detecting items with lower qualification rate in plentiful water period were total coliform group (73.3%), nitrate nitrogen(83.3%), colony count (86.7%), thermotolerant coliform bacteria (46.7%), in sequence. Detecting items with lower qualification rate in dry period were nitrate nitrogen(83.3%), total coliform group(85.3%), colony count(95.0%), thermotolerant coliform bacteria(98.0%) in sequence.1.4Monitoring and analysis of rural drinking water in Huangdao district (the original Jiaonan City) from2010to2012.From2010to2012, a total of720water samples from Huangdao district (the original Jiaonan City) were detected. In sum, the qualified rate was54.4%. The qualified rate of water sample was46.0%,54.3%and46.0%from2010to2012respectively. The difference was significant between each year(χ2=27.26, P<0.01), and360water samples came from wet season with the qualified rate (?)%;360water samples came from dry season and the qualified rate was82.2%. There was significant difference between two seasons (χ2=217.48,P<0.01)2. The detection results of drinking water in urban and rural areas during2008-2012in Huangdao district (formerly the city of jiaonan)During2008-2012, a total of438water samples were detected. The qualified rate was76.0%, and the annual qualified rate were all above70%.The qualified rate of water samples were81.0%,77.4%,72.8%,77.4%and73.5%respectively from2008to2012. There was a significant difference of qualified rate among the years (χ2=12.74, P<0.05). The qualified rate of centralized water supply was81.5%and the qualified rate of decentralized water supply was68.8%. There was a significant difference between them (χ2=8.09,0.01<P<0.05).The project with lower qualified rate in the detection index was in turn the aerobic bacterial count(85.1%), total coli-forms(94.3%), nitrate nitrogen(95.2%), manganese(96.1%).3Test results of1379drinking water in all towns and sub district offices, in Huangdao district during20083.1The overall situation of domestic and drinking water on physical and chemical indicators in each towns and street agency of Huangdao district during2008In2008, samples size of test water was1379, and the percentage of pass was69.7. Among them, samples size of test water was650, with the percent of pass62.5%in wet season and729and76.1repectively in dry season; Comparison between the west and the dry season, the difference was statistically significant(P<0.05).3.2Physical and chemical index of domestic and drinking water in each towns and street agency of Huangdao district during2008Among the villages towns and streets office of Huangdao district, the highest percentage of pass was Zhushan street agency, with the percentage of pass95.3%.The lowest was Jiaohe economic zone,28.6%,while in wet and dry season the highest percentage of pass was Zhushan street agency and Tieshan street agency,95.0%and 97.2%respectively. Conversely, it was Jiaohe economic region,(?) in both seasons.3.3Test results of physical and chemical indicators of drinking water in the wet and dry season in Huangdao district (the original jiaonan) during2008During dry season, the minimum rate of pass indicators was nitrate nitrogen, and it was81.8%. Manganese is the lowest,99.3%in the category of metal, while the lowest was nitrate nitrogen and manganese, with the percentage of pass74.9and98respectively during wet season.Conclusions1From2010to2012, microbial index is primary unqualified index, which include the total number of colonies, thermotoletant coliform bacteria. It is retated to the rural drinking water pollution, lacking of regular use of sterilization and disinfection facilities in rural drinking water in Huangdao district2From2010to2012qualified rate in dry season is higher than wet season on rural drinking water in Huangdao district; in addition to the individual indicators, sensory properties, general chemical indicators and toxicology indicator has no significant statistical differences. It showed that it is stable on physical and chemical indicator of huangdao district. From2010to2012comparison between rural drinking water quality showed the worst in2011and the best in2012.3From2008to2012, urban and rural drinking water detection qualified rate is high in Huangdao district (the original jiaonan), the overall level is nice, water supply centrally is higher than the decentralized water supply. Drinking water unqualified index mainly include microbial index (total number of bacterial and colony total coliforms) nitrate nitrogen and manganese metal.4The overall situation is nice for physical and chemical indexes of1379drinking water in Huangdao district during2008, and higher qualification rate in the dry water season. The lowest indexes is nitrate nitrogen and manganese in wet and dry water season.Excessive levels of nitrate nitrogen and manganese is associated with esophageal cancer colorectal cancer, lung cancer, liver cancer, gastric cancer and son on.