Reverse osmosis (RO) is a popular method of water filtration that removes impurities and contaminants from tap water. It works by forcing water through a semipermeable membrane, leaving behind contaminants on one side and clean water on the other. In this article, we will review five different RO systems to help you choose the best one for your needs. 1. iSpring RCC7 High Capacity Under Sink 5-Stage Reverse Osmosis Drinking Water Filtration System: This system is designed to provide clean and healthy drinking water from any faucet, including hard water areas. It has a high capacity of up to 70 gallons per day (GPD) and features five stages of filtration for maximum contaminant removal. The iSpring RCC7 also includes an ultra-long life filter cartridge that can last up to two years with proper maintenance, making it a cost-effective option in the long run. 2. Ultimate Water Softener: This system is designed to soften hard water and improve its taste and odor. It uses a combination of ion exchange resins and activated carbon filters to remove impurities and contaminants from tap water. The Ultimate Water Softener also includes an automatic shut-off valve that prevents overuse, making it easy to maintain. 3. FS-TFC Reverse Osmosis Water Filtration System Under Sink Water Filter 5-Stage 100 GPD Plus Extra Set of 4 Filters for Free: This system is designed to provide clean and healthy drinking water from any faucet, including hard water areas. It has a high capacity of up to 100 gallons per day (GPD) and features five stages of filtration for maximum contaminant removal. The FS-TFC also includes an extra set of four filters for free, making it a cost-effective option in the long run. 4. Waterdrop RO Reverse Osmosis Water Filtration System: This system is designed to provide clean and healthy drinking water from any faucet, including hard water areas. It has a high capacity of up to 100 gallons per day (GPD) and features five stages of filtration for maximum contaminant removal. The Waterdrop RO also includes an automatic shut-off valve that prevents overuse, making it easy to maintain. 5. APEC Water Systems RO-90 Ultimate Series Top Tier Supreme Certified High Output 90 GPD Ultra Safe Reverse Osmosis Drinking Water Filter System: This system is designed to provide clean and healthy drinking water from any faucet, including hard water areas. It has a high capacity of up to 90 gallons per day (GPD) and features five stages of filtration for maximum contaminant removal. The APEC RO-90 also includes an automatic shut-off valve that prevents overuse, making it easy to maintain. In conclusion, reverse osmosis systems are a great way to provide clean and healthy drinking water from any faucet. When choosing the best system for your needs, consider factors such as capacity, filtration stages, and ease of maintenance.