The result of all-indicators and all-covering (which called‘double all’for short) monitoring on centralized drink-ing water source in Ningxia showed that groundwater is the main drinking sources of the cities in Ningxia,and the closure reservoirs in front of the mountain are the main drinking water sources in the southern mountain area. The monitoring data from 29 water sources show that every indicator from most water sources meets the national standards. In general, the water qualities of lake and reservoir water sources are slightly better than those of the groundwater sources. The water qualities of prefecture level cities’ water sources are better than those of the county level towns’ water sources. The water quality of artesian water source is better than that of diving type water source. A comprehensive analysis is made based on the‘dou-ble all’monitoring results. We have mastered the present situation and the spatial differentiation characteristics of the cen-tralized drinking water sources in Ningxia and some preliminarily countermeasures for protection of the environment in water source area are put forward.%对宁夏集中式生活饮用水源开展全指标、全覆盖的“双全”监测结果表明：宁夏城市饮用水以地下水为主，南部山区以山前截流的水库水为主；29个水源地的监测数据分析表明，大部分水源地各项指标均符合国家标准。总体来看，湖库型水源地水质略优于地下水型水源地；地级城市水源地水质优于县级城镇水源地；承压水型水源地水质优于潜水型水源地。根据“双全”监测情况综合分析，掌握了宁夏集中式饮用水水源地水质现状和空间分异特征，初步提出了水源地环境保护对策。
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