不同的净水技术性能上有很大差异。
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污染物	过量摄入可能引起的主要病症	沉淀/过滤	煮沸	紫外线杀菌	臭氧杀菌	活性碳过滤	离子交换	蒸馏	反渗透R.O.
异臭物	食欲不振.毒素	●	●	●	●	●	●	●	●
沉淀物	结石.肠炎	●	●	●	●	●	●	●	●
有机物	毒素	●	●	●	●	●	●	●	●
氯化物	防蛀牙/致癌	●	●	●	●	●	●	●	●
细菌	細菌性传染病	●	●	●	●	●	●	●	●
病毒	病毒性传染病	●	●	●	●	●	●	●	●
钙	结石症.痛风	●	●	●	●	●	●	●	●
镁	消化系统疾病	●	●	●	●	●	●	●	●
余氯	产生致癌物	●	●	●	●	●	●	●	●
钠	高血压/心脏病	●	●	●	●	●	●	●	●
磷	有机磷中毒	●	●	●	●	●	●	●	●
铅	肾脏病/神经痛	●	●	●	●	●	●	●	●
砷	乌脚病/神经炎	●	●	●	●	●	●	●	●
硫	消化系统疾病	●	●	●	●	●	●	●	●
钾	电解质不平衡	●	●	●	●	●	●	●	●
镉	骨骼变形/背痛	●	●	●	●	●	●	●	●
碱	酸碱不平衡	●	●	●	●	●	●	●	●
农药	中毒/肝炎	●	●	●	●	●	●	●	●
除草剂	中毒/肝炎	●	●	●	●	●	●	●	●
DIOXIN	畸形儿/肝炎	●	●	●	●	●	●	●	●
三氯甲烷	致癌	●	●	●	●	●	●	●	●
放射性粒子	癌	●	●	●	●	●	●	●	●

(●全部除去 ●90-99%除去 ●√部分除去 ×●无法去除)