WATERRO RO membrane 75 GPD – Model DW-1812-75 WATERRO DW-1812-75 is a high-quality reverse osmosis membrane for domestic drinking water purification systems. The 75 GPD capacity ensures a stable purified water flow and effective reduction of dissolved salts and other contaminants. The membrane is compatible with standard 1812/2012 membrane housings and is designed for water with TDS up to 1000 ppm. Key advantages 75 GPD capacity Standard 1812 size Suitable for 1812/2012 membrane housings Recommended for water with TDS up to 1000 ppm Suitable for domestic RO systems Reliable long-term operation