8 Types of Water Filters 1. Activated Alumina If you need to remove fluoride or arsenic from your water, activated alumina (AA) is the best filter of choice.

As a homeowner, it's important to know where your home's main water shutoff valve is in order to shut off the entire water supply—and to be aware of the other valves, both indoors and outdoors.

If you have had your water tested and it has levels of lead above .10 PPB, you should take precautions, especially during pregnancy and if small children will be drinking the water.

Moreover, in some cases, this water contains microplastics, which is just another kind of contaminant. Filtered or purified water offers an eco-friendly and potentially healthier alternative.