Cost Benefit Analysis on Diarrhoeal Diseases Control due to Improved Drinking Water in Huaibei Rural Area

Sources of drinking water and amount of drinking water consumed were analyzed,among 10092 residents, the diarrhoeal diseases (DDs) were collected in 6 villages provided with deep-well tap water and orther 6 control villages using non-centralized water supply (NCWS) in Huaibei rural area. The results showed that after providing people with tap water from deep-well (TWDW), the amount of drinking water consumed reached the national standard of drinking water quantity to beconsumed in rural area and the drinking water quality was much better than that of NCWS. The average lasting time of DDs was 3.01 days. However 43.45% of the patients did not seek medical assistance.After contolling for confounding factors, the AR% of NCWS for DDs was 59.1%. The results showed that the ratio of cost for TWDW and the benefit gained from the reduotion of DDs was 1:5.43.