自然水飲用安全技術討論
Submitted by superL l - running water is dealt with and use: The running water? Modern social civilization? The thing, it brings us life to move convenience on, it is you and I used and got. But in recent years, because the worker, agriculture are becoming more serious to the rivers and creeks, lake pollution, so that our running water and source of water are full of cause of disease and noxious substance, include it is raised, melted that some heavy metal, pesticide and water She are excellent, form a kind of natural phenomena polluted slowly.