We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › Sand filters are commonly used for keeping your swimming pool’s water clean, but over ...

A sand filter, or "filtration basin", is a stormwater quality treatment system that works by using a two-component clarification system: the first is a sediment forebay for settling large particles ...

In many of the same hot regions of the world prone to drought and water contamination grows a tree whose seeds attract and kill bacteria in water. It's a thin-branched, gangly-looking plant ...