Brondell H630 Circle Reverse Osmosis Under-Sink System

The Brondell H630 Circle is a 3-stage under-sink reverse osmosis system with a 4th-stage remineralization post-filter that adds calcium and magnesium back to RO water to raise pH and improve taste. Stage 1 is a 5-micron sediment pre-filter. Stage 2 is a carbon block pre-filter removing chlorine and organics that degrade the RO membrane. Stage 3 is the 75 GPD TFC reverse osmosis membrane certified under NSF/ANSI 58 for TDS, lead, nitrates, fluoride, arsenic, barium, radium, selenium, and other health contaminants. Stage 4 is a calcite remineralization cartridge that adds calcium carbonate back to the RO permeate, raising pH from the acidic range (5.5-6.5 typical RO output) to the alkaline range (7.5-8.0). The 3-gallon pressurized tank stores RO water for peak demand. A dedicated chrome faucet with LED filter change indicator is included. Replacement filter sets (Brondell H630-T) are sold as a complete set for annual replacement.