我省南北气候、地理差异很大,水源条件相差悬殊,不同地区有不同的供水形式。合理确定供水规模,搞好水厂总体设计,选用合适的水处理工艺和经济耐用的管材等是从事供水行业人员所关心的问题。供水规模定得过大,将导致投资过大,成本过高。村镇供水工程的设计年限一般以10年左右为 South and North of our province climate, geographical differences, water conditions vary greatly, different regions have different forms of water supply. Reasonably determine the scale of water supply, improve the overall design of the water plant, the selection of appropriate water treatment processes and economic and durable pipe is engaged in water supply industry personnel are concerned about. The scale of water supply is set too large, will lead to excessive investment, the cost is too high. The design of village water supply project is generally about 10 years