H3500 Reverse Osmosis System

The Hague H3500 Reverse Osmosis System water system provides the highest quality of water right from your faucet. Get peace of mind while giving your family the best with a new RO filter.

  • Proven to reduce arsenic, fluoride, chromium+6, lead, and more.
  • Pre-filter removes chlorine, sediment, and other particles to prolong the life of the membrane cartridge.
  • Membrane filter provides microscopic contaminant reduction
  • Non-electric pump fills tank five times faster than conventional RO systems
  • Pre-tested for quality and assurance.
  • Filters down to 1 micron with dual-function pre-filter.
System Specs
Dimensions: 14.5” x 16.75”
25-Year Limited Warranty
WQA Certified

How The H3500 RO System Works

  1. Stage 1 & 2 Dual Function Pre-Filter
    Reduces suspended and particulate matter from incoming tap water down to 1 micron. Also reduces chlorine/chloramines taste and odor before passing through the RO membrane.
  2. Reverse Osmosis Membrane
    Semi-permeable membrane targets and reduces 13 contaminants, including fluoride, nitrates, nitrites, lead, radium and arsenic. Also reduces remaining suspended solids and dissolved solids from the water molecules. Then, these separated impurities are washed down the drain.
  3. Prolonged Contact Filter
    A specially designed filter that further reduces aesthetic chlorine from your water.
  4. GAC (Granular Activated Carbon) Block
    One final filtration pass to reduce any additional objectionable tastes and odors.
H3500 Feature Numbers

5 Stage Reverse Osmosis

Our 5 stage reverse osmosis unit features a non-electric permeate pump that fills the storage tank five times faster than a conventional RO Unit.

  • No More Bottled Water
  • Maintains Water Pressure Within 5 lbs. of Line Pressure
  • 5 Times Faster Than a Conventional RO Unit
  • Non-Electric Operation
H3500 diagram

H3500 Reduction

Substance %
Arsenic (+5)* 99.6%
Barium 98.8%
Cadmium 98.8%
Chromium(+6) 99.1%
Chromium(+3) 99.7%
Copper 99.0%
Substance %
Fluoride 97.7%
Lead 99.3%
Radium(226/228) 80.0%
Selenium 94.0%
TDS 96.8%
Nitrate/Nitrite 91.2%

Additional Compounds Reduced

  • alachlor
  • atrazine
  • benzene
  • carbofuran
  • carbon tetrachloride
  • chlorobenzene
  • chloropicrin
  • 2,4-D
  • dibromochloroproane (DBCP)
  • o-dichlorobenzene
  • p-dichlorobenzene
  • 1,2-dichloroethane
  • 1,1-dichloroethylene
  • cis-1,2-dichloroethylene
  • trans-1,2-dichloroethylene
  • 1,2-dichloropropane
  • cis-1,3-dichloropropylene
  • dinoseb
  • endrin
  • ethylbenzene
  • ethylene dibromide (EDB)
  • haloacetonitriles (HAN)
  • bromochloroacetonitrile
  • dibromoacetonitrile
  • dichloroacetonitrile
  • trichloroacetonitrile
  • haloketones (HK)
  • 1,1-dichloro-2-propanone
  • 1,1,1-trichloro-2-propanone
  • heptachlor (H-34, Heptox)
  • heptachlor epoxide
  • hexachlorobutadiene
  • hexachlorocyclopentadiene
  • lindane
  • methoxychlor
  • pentachlorophenol
  • simazine
  • styrene
  • 1,1,2,2-tetrachloroethane
  • tetrachloroethylene
  • toluene
  • 2,4,5-TP (silvex)
  • tribromoacetic acid
  • 1,2,4-trichlorobenzene
  • 1,1,1-trichloroethane
  • 1,1,2-trichloroethane
  • trichloroethylene
  • trihalomethanes
  • chloroform
  • bromoform
  • bromodichloromethane
  • chlorodibromomethane
  • xylenes


Reverse Osmosis (RO) is a filtration process that removes contaminants from water at the molecular level. By using pressure to squeeze your water against a special membrane, water molecules are separated from impurities. Rejected dissolved solids are automatically rinsed down the drain leaving only high-quality water for you to use.

The H3500 Reverse Osmosis System removes chlorine, sediment and other particles to provide high quality drinking water.

The H3500 is certified to reduce fluoride, lead, arsenic, nitrates/nitrites and eight other contaminants.

Yes! The best way to know what kind of water filtration you need is to perform a test to see the contaminants you are dealing with. We want to make sure all of our customers are consuming clean and pure water. Contact us today to get your water tested!

Hague Quality Water International warrants that upon receipt from the owner of any Hague RO dispensing spigot, filter housing and cap, PCF filter housing and cap, membrane housing and cap, found to be defective in material or workmanship, Hague will repair or replace the defective item, at no charge for that item, for 25 YEARS from date of installation.

The H3500 can filter up to 50 gallons per day. A storage tank included with the system will store up to 3 gallons at a time to ensure that you have freshly filtered water on demand.

The carbon filters should be changed every six months, and the RO membrane cartridge should be changed every 12 months. If you have high levels of contaminants in your water, you may need to change your filters more frequently.

Hague Water’s complete system includes our non-electric pump, which fills the tank five times faster than conventional RO systems and does not require an external power supply.

Yes, our complete system includes a faucet.

Use & Care of the H3500 RO System