| Water and people's health is closely connected. On the one hand, water is necessary to maintain people's health; on the other hand, it is also an important medium-borne disease. Chongqing municipal district is rich in water resources, there are more than 30,000,000 people live here, so the water quality for the health of residents in Chongqing is of great significance.We analyzed the water quality of the reservoir in Chongqing area of Chongqing, municipal drinking water in rural areas and the surface water in referred to the district in the region from 2001 to 2004. And also the county water-borne infectious diseases (hepatitis, dysentery, typhoid fever and paratyphoid) in 2004, as well as the incidence of rural drinking water quality in Chongqing situation was analysed. Preliminary analysis of monitoring data shows the water quality in recent years, Chongqing Municipality and the typical water-borne diseases referred to the relevant circumstances.The water quality of Yangtze River, Jialing River and Wujiang River is generally good, remained stable in recent years. There are a number of sections to meet the water quality of Grade I water quality standards; direct drinking water in rural areas, but total coliform bacteria and total concentration of more than average in rural areas, "Health and Drinking Water Standard "(GB5749-2006) standard guidelines. 2001-2004 years, Chongqing (40 counties) to refer the typical water-borne diseases, dysentery accumulated the highest incidence; cumulative incidence of hepatitis A second; the cumulative incidence of typhoid minimum. From the inter-annual change of view, hepatitis A and typhoid incidence decreased, the incidence of dysentery no laws. Three kinds of water-borne diseases in the referral, the incidence rate for men than women in general morbidity; both men and women from 2001 to 2004, four years, the incidence of both a downward trend year by year. In terms of age distribution in the coming year, the men and women in the age distribution of the incidence of hepatitis A is basically for the characteristics of the bipolar (5 and 80 years of age and above) lower, slightly higher than in the middle, but the trend was not apparent; men and women in the incidence of dysentery in the 5-year-old Following is the maximum age and then fell sharply, reaching a stable level, with the exception of 2001, the men and women in the incidence of typhoid fever in all ages have a more balanced, the basic 1 / below 100,000.Correlation analysis results show that the incidence of hepatitis A and the biological indicators of drinking water have no significant correlation, and the men and women in the incidence of dysentery, with the total number of bacteria showed a significant positive correlation with total coliform was no significant Related to each other. For typhoid fever, typhoid fever incidence of men and biology in drinking water indicators are no significant correlation, the incidence of typhoid and women with the total number of bacteria was more significant positive correlation with total coliform was no significant correlation. Single-factor regression analysis showed that the tests of several functions in the form of linear relationship between the raw data on the extent to fit the best, the incidence of dysentery and typhoid fever incidence of women with the total number of bacteria are a significant linear relationship. Multivariate regression analysis showed that the linear model with a single factor, in the mode to ensure that there is significant under the premise (P <0.05), in addition to male dysentery, the introduction of GPD, health conditions and other factors can affect to some extent Regression model to improve the ability to explain, but R2 does not increase significantly, with specific reasons for further study. |
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