Fresh-water lakes and streams furnish nearly all of our surface water supplies . 我們所用的地表水幾乎全由淡水湖和河流供給。
However , because cyanobacteria have strong smells and tastes and interfere with certain water treatment processes , most municipalities with a history of blooms monitor their surface water supplies for cyanobacteria 但是,由于藍藻具有強烈氣味和口味、干預某些水處理過程最具有歷史直轄市花開藍藻監(jiān)測地表水供應
Surface water supplies , problems and solutions ; the small farm dam how to construct one ; well drilling the von der rigg ; spring and groundwater protection ; urban water supply and sanitation ; water vending ; roof catchment systems 地表水供給的問題與解決方法;如何建造農(nóng)場小蓄水池;鑿井;泉水與地下水的保護;城市供水與衛(wèi)生設備;水的銷售;屋頂排水系統(tǒng)。