PuROTwist reverse osmosis (RO) systems are point-of-use, under-sink water filtration units known for their quick-connect, twist-off filters that allow for maintenance without tools or mess. These systems typically feature a four-stage filtration process that reduces up to 99% of common impurities, including lead, chlorine, fluoride, and TDS (total dissolved solids).
The Purotwist reverse osmosis drinking water system is designed for easy installation and maintenance. Please note that routine maintenance is essential to the longevity and performance of RO systems. Filters should be changed every six months depending on the quality of the feed water supply. The Manufacturer recommends a TDS test every six months.
PuROTwist Gold series Features:

• Stage 1 - Sediment Filter: Removes dirt, sand, and physical particles down to 5 microns.
• Stage 2 - Carbon Pre-Filter: Protects the RO membrane by removing chlorine and sediment.
• Stage 3 - Reverse Osmosis Membrane: Membrane reduces a high percentage of dissolved inorganics.
• Stage 4 - Post Carbon Filter: A final polishing process that enhances and clarifies your drinking water.
• Contaminant Reduction: TDS, Barium, Cadmium, Hexavalent and Trivalent, Chromium, Lead, Copper, Radium 226/228, Selenium, Fluoride, Nitrate/Nitrite
• Additional Hardware: Systems include an RO Water Storage Tank, a Chrome RO Faucet (air-gap or non-air-gap), and an installation kit.
• Auto shut off valve
• Tank ball valve
• Feed supply
• 3/8" From tank to faucet for full flow
• Omnipure Q Series Water Filters
• John Guest fittings
• Drain connector

Maintenance & Filter Replacement

• The PuROTwist systems use Omnipure Q-Series quick-change cartridges.
• Annual Maintenance: Sediment and carbon filters (Stages 1, 2, and 4) should be replaced every 6–12 months.
• RO Membrane: The central RO membrane typically requires replacement every 24 months.