75 GPD RO Reverse Osmosis Membrane – 1812 TFC Type | High Rejection Replacement, SKU# TW-1812-75

Description

75 GPD RO Membrane – Application & Use Case

A 75 GPD (gallons per day) reverse osmosis membrane is one of the most widely used membrane ratings in residential RO systems. It provides a strong balance between water production speed and contaminant rejection, making it suitable for both traditional under-sink RO systems and select countertop RO applications.

This membrane is compatible with MyAquaFilter Countertop RO systems and is commonly selected when consistent water quality is desired with a moderate flow rate. It is also widely used in standard under-sink RO systems, with or without a storage tank.

Compared to lower-capacity membranes, a 75 GPD membrane offers dependable daily water production while maintaining excellent rejection performance, making it a popular choice for household drinking water needs.

What a 75 GPD RO Membrane Removes

Like other TFC (Thin Film Composite) reverse osmosis membranes, a 75 GPD membrane reduces contaminants by rejecting dissolved substances at the molecular level. Rather than targeting individual chemicals, the membrane reduces broad classes of dissolved impurities, allowing it to reduce thousands of potential contaminants that may be present in water.

Typical reductions include:

• Total Dissolved Solids (TDS)
• Fluoride
• Heavy metals (lead, arsenic, mercury, chromium)
• Nitrates and nitrites
• Dissolved salts and minerals (calcium, magnesium, sodium)
• Many dissolved inorganic and synthetic compounds

Actual performance depends on feed water quality, pressure, temperature, and proper pre-filtration. Not all contaminants are present in every water source.

What Does 75 GPD Mean?

GPD (Gallons Per Day) refers to the maximum amount of purified water the membrane can produce under ideal laboratory conditions (approximately 77°F / 25°C water temperature, ~60 psi pressure, and low feed-water TDS).

In real-world residential use, actual production is typically lower due to variations in water temperature, pressure, and incoming water quality.

Approximate Real-World Production

*Actual production varies based on feed water pressure, temperature, TDS, and system configuration.

Why Choose a 75 GPD RO Membrane?

A 75 GPD membrane is an excellent option for users who want reliable water production while maintaining strong filtration efficiency. It is often selected as a balanced solution between lower-output membranes and higher-GPD membranes designed for increased flow.

This membrane may be ideal if you:

• Use a countertop RO system without a storage tank
• Use a standard under-sink RO system (with or without a tank)
• Want a balance between flow rate and contaminant rejection
• Need consistent daily drinking water production

Compatibility & Installation Notes

This membrane uses the standard 1812 size, making it compatible with a wide range of residential reverse osmosis systems.

Fits systems using:

• 1812 RO membrane housings
• MyWaterClub Countertop RO systems
• Standard under-sink RO systems (tank-based or tankless designs)
• Systems designed specifically for a 75 GPD membrane

Important Notes

• Proper sediment and carbon pre-filtration is required to protect the membrane
• Carbon filters must remove chlorine and chloramine before water reaches the membrane
• The flow restrictor must be properly matched to the membrane’s capac