US Water Residential Membrane 100 GPD

List Price $75.51 Factory Direct Price $50.34 Sale Price $41.95
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US Water 100 Gallon Per Day Premium Reverse Osmosis TFC Membrane

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US Water 100Gallon Per Day Premium Reverse Osmosis TFC Membrane

11.75" x 1.75" 100 GPD Standard Size RO Membrane

Replaces the Following Membranes

  • RO UltraTec
  • Filmtec TW30-1812-100
  • Desal TFM100
  • Watts W-1812-100

Operating Limits

  • Membrane Type: Thin Film Composite
  • Maximum Operating Temperature: 110°F (43°C)
  • Maximum Operating Pressure: 125 PSI
  • Maximum Feed Flow Rate: 1 GPM
  • Minimum Concentrate Flow Rate: 4 x Permeate
  • pH Range, Continuous Operation: 3 - 11
  • Maximum Feed Water Turbidity: 1 NTU
  • Maximum Feed Silt Density Index (SDI): 5 SDI
  • Chlorine Tolerance: 0 PPM


  • NSF 58 Approved
  • 100% Integrity Tested
  • Shipped Dry for Extended Shelf Life
  • Accommodates all 2” x 12” Residential Membrane Housings
  • Made in the U.S.A.

Dimensions (Inches)

A: 11.75
B: 10.00
C: 0.86
D: 0.88
E: 1.78

NOTE: If you are changing membranes, it is always a good practice to change the drain line flow restrictor on the reverse osmosis system. It can become plugged with years of usage (which mean that you don't have enough flow to drain to properly flush the impurities off the membranes' surface, causing early membrane failure), or if you are installing a larger or smaller membrane, the flow restrictor needs to be changed.

additional information

American MadeYes
Filter SizeOther Sizes
Filter TypeMembranes
ManufacturerUS Water Systems