Watts (W-315) 3 Stage 50 GPD Reverse Osmosis System

The W-315 is capable of producing 50 gallons per day and typically fits in a sink cabinet. The Watts's RO System is a 3 stage reverse osmosis system which contains two replacement water filter cartridges and one membrane. Below is a break down of each stage and the compatible replacement membrane and filter part numbers that can be found on our site. This particular system uses a TFC or TFM (thin film composite) membrane and is chlorine sensitive. It is highly recommended to use a carbon filter in the STAGE 1 filter housing.

The full system is also available for purchase.  Please click here to purchase the Watts W-315 RO system.

STAGE 1 : 32-250-125-975

STAGE 2 : W-1812-50

STAGE 3 : 32-250-125-975