About Reverse Osmosis



Reverse Osmosis (RO) water purification systems can reduce and eliminate TDS‡ like salts and minerals from your drinking water. With the increase of pollution, inorganic minerals and chemicals are getting into our water supply.

Our body's cells reject these contaminants, leaving dissolved inorganic substances (acid crystals & minerals deposits) throughout the body. This accumulation of debris creates more work and trouble for the body, such as arthritis in joints, gallstones, kidney stones, and mineral deposits in artery walls. Organically bound minerals, found in our live foods such as fruits and vegetables, are considered soluble, which means the body absorbs them easily into the cells. One glass of freshly squeezed orange juice would be higher in minerals than 30 gallons of untreated raw water.

Purified water provides a necessary rinsing treatment for hydration purposes as the human body is mostly fluid (over 80% water) and equally important to rinse impurities out of our bodies.

RO Rejection Rate

Normally 5-stage Reverse osmosis systems can remove/reduce the following list of contaminants:


Contaminant % Rej.
Adrazin >98
Aldrin >98
Aluminium 95-99
Ammonium 95-99
Arsenic +5 95-99
Barium 95-99
Benzene >98
Bicarbonate 99
Cadmium 95-99
Calcium 95-99
Calcium Chloride 99
Chloride >99.9
Chlorine >98
Chlorinated Pesticides 99.9
Chloroform >98
Chramate 95-99
Chromium VI >98
Copper 95-99
Copper Sulfate CuSO4 >99
Contaminant % Rej.
Cryptosporidium Cysts >99.9
DDT >99.9
Dichloromethane >98
DOT >98
E. Coli Bacteria >99.9
Endrin <98
Fecal Bacteria >99.9
Ferro Cyanide 97-99
Fluoranthene >98
Fluoride 90-95
Giardia Cysts 99.9
Glucose 98
Herbicides <98
Iron 97-99
Lactic Acid pH5 95
Lead 95-99
Lindane 99.9
Magnesium 95-99
Magnesium Chloride >99
Contaminant % Rej.
Manganese >98
Mercury 95-99
Methoxychlor >98
Nickel 95-99
Nickel Sulphate NiSO4 >99
Nitrate +3 90-99
PCBs >99.9
Pesticides >98
Perchlorethylene >98
Phenol >98
Phosphates 93-99
Potassium 95-99
Radioactivity 95-99
Salmonella Typhi 99.9
Selenium IV >95
Serratia Marcescens >99.9
Shigella Dysenteriae 99.9
Silica SiO2 95-99
Silicates 98
Contaminant % Rej.
Silver 95-99
Sodium 95-99
Sodium Chloride NaCl 99
Sodium Fluoride 99
Sodium Nitrate NaNO3 97-99
Strontium 95-99
Sucrose 99
Sulfates 97-99
Tannic Acids <98
Toluene 99.9
Toxaphene >98
Trichloroethylene >98
Trihalomethanes >98
Total Dissolved Solids >95
Vibro Choleriae >99.9
V.O.C's >98
Zinc 97-99
And More...  


Simple Steps To Select The Right Reverse Osmosis For Your Home

Are You On City Water?

First check if you have a good incoming city water pressure 55PSI to 75PSI to your RO system pipe. Recommended to add a booster pump if the pressure is lower than 50PSI. Add pressure limit valve if your city water PSI is higher than 75PSI.

Water pH Levels Beverage pH Levels
Tap Water = 6-8 Soda = 2.5
RO Water = 5-7.5 Coffee = 4
Mineral Water = 7.4-9 Beer = 4.5

With tap water the PH is around 6 to 8 , RO water drops pH to 5 to 7. If pH is an important factor to you, you may want consider adding PH alkaline filter to re balance the RO drinking quality

Average family of 5 consume about 1- 2 gallon every day including tea, coffee and cooking. If you are thinking of buying an RO/DI System, consider the size of your aquariums and how often you need to change the water in your tank(s)

Are You On Well Water?

Most well water pumps designed to work between 40 to 60 PSI, however there is 90% chance that your RO system will not work properly without adding a reverse osmosis booster pump, especially if you have water softener or any other whole house water filtration system, which all reduce the entire home pressure and eventually they will affect the pressure to the reverse osmosis inlet.

In some cases the home water pressure will be less than 40 PSI, and such a low pressure is not enough operate the RO system under normal conditions. Sometimes the system works good for 1 or 2 months and then problems will start showing up when the reverse osmosis pre-filters start clogging with dirt and causing the entire pressure drop inside the RO system.

To make the water potable add a 0.5 to 1 LPM UV Sterilizer to kill any well water bacteria if you do not have central whole house UV system.

We Build Custom RO Systems

Can't find a model that meets your specific application? We can custom build a system to meet to your needs.

You can pick:

  • Filter Configuration
  • Membranes and Housings
  • Fittings Type
  • UV Sterilizer
  • Booster Pump
  • Permeate Pump
  • Faucet
  • Monitoring, Metering & Gauges

‡Total Dissolved Solids