Analysis Of Quality Surveillance And Health Risk Assessment Of Fluoride In Drinking Water In Kunshan From 2010 To 2014

Objective To analyze the quality and perform an assessment on the health risk of fluoride of drinking water in Kunshan City from 2010 to 2014;By understanding on health-related knowledge and awareness of the city drinking water plant employees through the questionnaire and to facilitate a preliminary understanding of residents’ drinking water health knowledge deficiencies, to provide a theoretical basis for the relevant departments to formulate relevant policies and analyze the influencing factors of knowledge about drinking water health in water plant employees,thus to provide scientific bases for targeted intervention measures.Methods According to monitoring requirements and the actual situation of the region,we identify drinking water monitoring plan and set up monitoring points. In accordance with the relevant national standard, the water samples of source water, treated water and peripheral water during 2010-2014 were collected, inspected and evaluated.Technicians take appropriate measures to ensure the veracity and reliability of the results with the staff training, strengthening laboratory management and build system of audit quality control.Fluoride was assessed by risk evaluation models recommended by the U.S. environmental protection agency. Knowledge about health drinking water of water plant employees was investigated by using self-designed questionnaire survey. Choosing a total of 98 employees of water plant, and conducting a questionnaire survey, using Epei Data3.02 to establish a database and make entry, data collated for statistical analysis using SPSS17.0.Results During 2010 and 2014, 1176 samples were collected and monitored, including source water, chlorinated water, peripheral water, and the total qualification rate is 100.0%. Fluoride in drinking water in the region were within the standard range and showed the overall downward trend year by year.There were no significant differences in overall Fluoride a trend of fluctuations in different months。The Fluoride in the wet season was much the same as the dry season.The health risk of fluoride(P25,P75) in source water, chlorinated water, peripheral water in Kunshan for adults and children were 1.82×10-9/ y(1.59×10-9/ y,1.98×10-9/ y),1.76×10-9/ y(1.42×10-9/ y,1.80×10-9/ y),1.66×10-9/ y(1.44×10-9/ y,1.76× 10-9/ y),and 6.98×10-9/ y(6.12×10-9/ y,7.60 ×10-9/ y),6.75×10-9/y(5.44×10-9/ y,6.91×10-9/ y),6.38×10-9/ y(5.54×10-9/ y,6.76×10-9/y),respectively. Investigated a total of 98 people, 98 were valid questionnaires, the response rate of 100.0%, including 48 men(49.0%), 50 women(51.0%);aged 40~ most, accounting for 32.7%, followed by 30~, accounted for 29.6%;cultural degree was focused on the diploma and bachelor degree or above accounted for 69.4%;technology jobs accounting for the highest percentage, 35.7%;3 years or more employees accounted for 91.8%. Regression analysis showed that culture level, position and length of service had a significant influence on drinking water health knowledge levels, including standard regression coefficient respectively 0.35,-0.18,0.28.Conclusion During 2010-2014, the general situation of quality of drinking water in Kunshan City was good, and the health risk of fluoride in drinking water in Kunshan was in the range of acceptable levels. Comprehensive quality of waterworks staff was crucial for drinking water supply, processing, and emergency response, therefore we should constantly strengthen water plant employees on drinking water health knowledge propaganda and education, develop employees to drinking water health knowledge, a comprehensive understanding of the relationship between drinking water and health, so as to improve the overall health knowledge level of employees, ensure the hygienic safety of drinking water and protect the health of the local people.