At present, production of drinking water in the water, usually in the process are: the depth of water treatment + conventional purification process. Ammonia is high, the need to consider before the conventional purification process, and then biological pretreatment. Namely:
 Biological pretreatment of raw water → → → conventional treatment Advanced Treatment → → Drinking Water Disinfection
 Deep oxidation of the depth of treatment technologies, activated carbon adsorption, ozone, a biological activated carbon (O3-BAC) and membrane processing. O3-BAC method in which water quality improvement effect of the fine and stable, reliable, moderate cost of processing such as the current application of more advanced treatment of the main process.
 Drinking water supply by:
 Drinking water supply means divided into two categories, one is filling (barrel or bottled), mainly for bottled drinking water and natural mineral water for drinking; the other is the establishment of specialized piped water supply to water users, primarily Used for drinking water. The following major water supply pipeline direct manner outlined.
City drinking water supply situation at home and abroad:
 (1) the supply of foreign status. Abroad mode of supply of drinking water in most cities to adopt a mode of supply pipe network, the implementation of drinking water quality standards more stringent than, as good water source protection, water treatment plants and to different degrees by the advanced treatment process, combined with the stability of pipe , Hence the good quality of water.
 Some cities have adopted the foreign quality of water supply mode, the main impact on water quality, high cost of water and to conserve water resources into account. Its characteristics are: a supply of drinking water for the city main water supply system, another set is designed to supply non-potable water system, usually non-potable water system is that local or regional, as the main system of supplementary water supply . Some local areas such as Japan, high-rise building in the wastewater treatment water reuse for flushing, the Hong Kong construction in some areas to do with water flushing.

(2)Domestic supply situation. Currently within the city limits of the municipal drinking water supply is still a sub-quality supply of advanced treatment of community-based approach, that tap water as raw water, centralized in-depth treatment in the district, in accordance with design specifications direct drinking water to "drink With clean water standards "(CJ94-2005) as the basis, to provide drinking water pipes, this approach is mainly used for the new living quarters, an important commercial pedestrian street urban and regional water supply and transformation. Large-scale municipal water supply system to supply drinking water the way the city has not been present, have been reported.