Today, we show you how to build a water filter tank to clean underground water for daily ... To solve this, we constructed a natural filtration system to purify it for safe use.

Washing your hands, taking a shower or filling up your water bottle from the fountain in your dorm hall—these everyday ...

A large underground pipe connects the tank to the home's drain system. In a conventional septic system, waste water and solids flow through the pipe into the tank, where they're partially broken ...