The APEC Water Systems Essence 5-Stage Reverse Osmosis Water Filter System is a popular choice in this category thanks to its five large-capacity filters, which can remove 99% of chlorine, taste, odor and VOCs, as well as toxic fluoride, sodium, arsenic, lead, nitrates, heavy metals and more. These systems typically involve several filtration stages, and they use a super-fine membrane to remove any minerals, salts, metals, cations or anions that may be dissolved in water. Many water filters use activated carbon or paper membranes to remove contaminants, but if you want to remove total dissolved solids (frequently called TDS) from your drinking supply, you’ll need a reverse osmosis water filter. Home Depot APEC Water Systems Essence 5-Stage Under-Sink Reverse Osmosis Water Filter System BUY AT HOME DEPOT Best Glass Water Filter: Hydros Glass Slim Pitcher.Best Water Filter For Hiking or Camping: Katadyn Vario Water Filter.Best Water Bottle Filter: Philips Water GoZero Everyday Water Filter Bottle.Best Water Filter For RV: Big Berkey Water Filter.Best Whole-House Filter: Pelican PSE1800 Whole House Water Filtration System.Best Water Filter For The Shower: AquaBliss High Output Revitalizing Shower Filter.Best Reverse Osmosis Filter System: APEC Water Systems Essence 5-Stage Under-Sink Reverse Osmosis Water Filter System.Best Under-Sink Water Filter System: Frizzlife Under Sink Water Filter System.Best Filter for Sink Faucet: PUR Faucet Mount Water Filtration System.Best Designed Water Filter Pitcher: Soma 10-Cup Pitcher.Best Value Water Filter Pitcher For Most People: Brita Standard Metro Water Filter Pitcher.If you’re ready to start drinking cleaner water, the following are the best water filters for every room of your home. I also like to see third party lab testing that can demonstrate that the system meets or exceeds water standards.” Feller also recommends checking the cost of replacement filters and how long each lasts to ensure it will be an economical choice for your home. When shopping for the best water filter for your needs, she recommends opting for one that purifies and filters out contaminants: “Look for a system that both filters AND purifies, and is transparent about the contaminants it removes. “Drinking purified water is a way to keep harmful contaminants out of your drinking water, which is better for our bodies and overall health.” “Water filters remove waterborne protozoa and bacteria, but not viruses, whereas water purifiers filter out impurities including protozoa, bacteria and viruses,” she explains. No one wants to be putting these contaminants into their body every time they take a sip of water (or cook, clean or bathe with it), and Feller explains that’s where water filters and purifiers come in handy.