供水與污水處理歷史(英语:History of watersupplyandsanitation) 印度社區雨水儲存池#類似水體(英语:Johad#Similar waterbodies) 印度河谷文明污水處理系統(英语:Sanitation of the Indus Valley Civilisation)
with domestic animals and livestock, andwatersupply directly from well and river [10]. ... Table 2: Summary of treatments and efficacy for Blastocystis
(原始内容存档 (PDF)于2018-02-11). Brown, Lester R. and Halweil, Brian (1999-09-23). Population Outrunning WaterSupply as World Hits 6 Billion. Worldwatch Institute