0 a device for removing unwanted substances such as bacteria or harmful chemicals from drinking water
You can also bring tablets that you put in water to make it safe, or you can bring a water filter.
Emmett perforated the bottom of a coffee can and used greensand to make his own water filter.
Water filtered by two filters in tandem was used.
Bottled water typically has unknown fluoride levels, and some domestic water filters remove some or all fluoride.
Doulton's original organization for water filters remains in existence, although it has been sold and renamed several times.
They grew from only a few inches tall to several feet tall, allowing the animal to take advantage of water filtered by no other animals.
Ion exchange is a method widely used in household (laundry detergents and water filters) to produce soft water.