sam12

  When it comes to living a healthy life, water is at the top of the list. Even though many people in the United States have access to clean water through faucets, two million Americans lack access to untainted water. Moreover, according to the US Environmental Protection Agency, the number of contaminants that make water undrinkable is astronomical. This is where water filters come in handy. What is the process of water filtration? Water can be filtered in three ways: physically, chemically, and via reverse osmosis. In physical filtration, water is strained through a membrane layer, which captures particles and prevents them from reaching the purified water. Chemical filtration involves treating water with an active substance, such as carbon, which pulls contaminants like lead out of the water.  In contrast to physical and chemical filtration, reverse osmosis uses pressure to push water through a semipermeable membrane layer. There are pores in this membrane large enough to let water