Best Under Sink Water Filter
  • Home Master 7-Stage Loaded Reverse Osmosis FilterĀ 
  • iSpring RCC1UP-AK 5-stage Reverse Osmosis Filter
  • APEC Top Tier 5 Stage Reverse Osmosis Filter
  • Global Water RO-505 5-Stage Reverse Osmosis Filter
  • Aquasana 3-Stage Under Sink Water Filter


If you’re looking for the finest under sink water filter, it doesn’t get any better than the Home Master 7-Stage Reverse Osmosis Filter. It packed with features and solves common RO related issues making it a premium buy

However, if you’re on a budget the APEC Top Tier 5-Stage Reverse Osmosis Filter is our top pick and while slightly cheaper it comes with all the basic features you’d want in a good RO system.