MORE than one in five people feel the environment they live and work in is harming their health, according to a survey released yesterday. Residents of polluted West Kowloon were the most worried about the environment's impact on their health, even though their rates of illness were no higher than elsewhere. People in the cleaner New Territories North district were the least concerned. The survey of 3,800 people by Hong Kong University, the Hong Kong Medical Association and RTHK also found people were unhappy with the physical conditions at their places of work. Dr Lam Tai-hing, a reader at the university's department of community medicine, said New Territories North workplaces drew the most satisfaction. The worst places to work were said to be the industrial regions of East Kowloon, which includes Kwun Tong, and New Territories South, which includes Tsuen Wan. Overall, 21 per cent said poor air in their neighbourhoods affected their health, while 40 per cent said poor air at work did so. More than a quarter (27 per cent) said noise in their neighbourhoods affected their health, while 39 per cent were affected at work. But the results for reported illness did not match up with people's perceptions. For example, in West Kowloon, where respondents had the greatest concern about the environment, 29 per cent reported being sick in the two weeks prior to the survey - compared with 31 per cent living in East Kowloon and 25 per cent living in New Territories North. ''The degree of complaint about the environment doesn't really correlate directly with the degree of illnesses,'' Dr Lam said. He hoped the results would help raise awareness about the environment and health. The survey was done in conjunction with the RTHK programme, Doctor and You, and the results will be passed on to district boards.