Frequently Asked Questions

Water quality:  How is RO water compared to bottled water?

RO filtration:   How effective is reverse osmosis filtration compared to other methods?

Choosing & sizing system:   What system should I choose? You have many types!

Not-needed features:   Are membrane-flushing and built-in TDS meters really necessary?

Easy Installation:   Can I install this myself? What if I am unable to?

Maintenance:   What is the maintenance schedule and cost?

Filter change:   Is it easy to change filters?

Moving system:  If I move, can I remove the system to bring with me?

Ultra Violet light:  When do we need to add a UV light to our system?

Water quality:   How is RO water compared to bottled water?

Just as good or even better. We use the same technology, reverse osmosis (RO), as other major bottling plants use to filter water. Our drinking water has a sweet taste with a touch of minerals —not like the flat taste of distilled or bottled water. The five-stage system is the most stable and complete RO process. The best part is that you maintain your system and ensure your family's health yourself.  |TOP|

RO filtration:   How effective is Reverse Osmosis filtration compared to other methods ?

RO is the most convenient and effective method of water filtration. It filters water by squeezing water through a semi-permeable membrane, which is rated at 0.0001 micron (equals to 0.00000004 inch!). This is the technology used to make bottled water, it is also the only technology capable of desalinating sea water, making it into drinking water.

Non-RO water filters are much less effective, and the pore size on these filter media are much bigger, generally 0.5 - 10 micron. They can filter out coarse particles, sediments and elements only up to their micron rating. Anything finer and most dissolved substances cannot be filtered out. As a result, water is far less clean and safe compare to reverse osmosis filtration.  |TOP| 

  Choosing & sizing system: What system should I choose, you have so many models!

If Your
Water Pressure

Recommended Model


Is Normal
(45-100 psi)
RO-45 for Standard Flow
RO-90 for Super Fast Flow
RO-CTOP for Portability
Most folks on municipal city tap water falls in this category.
Is Lower
(30-50 psi)
You are probably on a private well or municipal water with lower water pressure.
Is Very Low to None
(0-30 psi)
Extremely low pressure; you are either in a foreign country, or in the U.S. but with very unique water situation.

Many RO suppliers do not always provide enough technical information/ models to help customers choose the right system for their homes. As a result, these customers are often surprised by problems like:

Common Problems
Why there is no water in the tank? Not enough input pressure to work the chosen system model
Gee, it takes all day for the tank to be filled!! Choose the system with inappropriate GPD or model
Why does the water taste so bad? Membrane has failed because the chosen system is unable to treat the user's type of water
Help! my system just bursted and our floor is flooded with water! Chose booster pumped system unnecessarily —a common error of misleading web sites

As you can see, it is important to choose the right RO system to match your water situation. This will keep your system running at top shape and your water tasting great for years.

In Case You Want to be Precise on your System's Output Calculations

Then you need to understand that the actual flow rate GPD(Gallons Per Day) of any reverse osmosis system depends on your home water pressure and temperature. This is why all of our systems are named as they are, for example: 36/45 GPD means it is rated at 36 GPD at 50 psi of water pressure, 45 GPD at 60 psi. While the industry standard is set at 60 psi, we know that not everyone's cold water is at 60 psi and 77 degrees F. Instead of misleading customers into thinking that a 45 GPD system will guarantee a flow rate of 45 GPD, we remind you that you might get less than 45 GPD —perhaps 36 GPD or even less if your pressure and temperature are very low! So when flow rate is critical for you, you need to consider all these factors.

reverse osmosis

Unneeded features:   Are membrane-flushing and built-in TDS meters really necessary? 

No, they are not necessary. They are useless features added mainly to help sell the products. Membrane flushing is an old technology used only for commercial RO membranes these days. Most residential RO membranes now utilize new technologies that require no flushing. The most dangerous is the "auto flush" type, because it actually "reduces" the life of your small home membrane by flushing it constantly, even when there is no need to do so. Some suppliers claim that flushing is needed for heir membranes to last 2-4 years. Yet our advanced membranes, without the hassle of flushing, can last up to 8 years if you just change your pre-filters regularly.

The built-in TDS meter on the RO system is also not a good idea. It actually misleads customers because the TDS meter does not indicate when it's time to change the filters. It lights up only when your TDS is very high —after your membrane is damaged! Those simple built-in meters do not show the actual TDS reading, they only show "good" or "bad" without any details. So you can't tell what percentage (%) of contaminants has been removed. If the meter is on the system, you will tend to wait for the red light before you change the pre-filters. But then it is too late. The membrane is dead already when you see the light. So this function actually helps kill the membrane rather than preserve it. We tell customers to just change the pre-filters every year and their membranes will be protected. We give you a high quality digital handheld TDS meter for free, so you can test your water anytime. With this meter, you'll know the exact TDS level before and after the RO. You can use it to test water anywhere you go. We believe this is a much better solution. |TOP |

Easy Installation:   Can I install this myself?  What if I am unable to?

Our systems come with extra detailed instructions and are easy to install. Most of our customers have successfully installed our systems themselves without any professional help. However, if you really can not or are just afraid to do the job, not a problem; just call on any plumber in your yellow pages and they can install it for you for a small fee. |TOP|

Maintenance:   What is the maintenance schedule and cost?

Our systems come with filters that can process about 4,000-5,000 gallons of filtered water. We calculate that if you use 10 gallons of pure water per day, this would last you more than one year. Even if you do not use that much water per day, we still encourage you to change the three pre-filters about once a year. This is for your own good health, because after all, the replacement filters do not cost too much (annual cost is $39 for all 3 filters) and you should not wait for the filters to totally deplete before you replace them. The 4th stage reverse osmosis membrane and the 5th stage filter can last up to 4-7 years so you do not need to worry about them for a while. |TOP|

Filter change:   Is it easy to change filters?

Very easy. Just order the needed filters from us and use the filter housing wrench that came with your system to swap out filters. This way you maintain the system yourself without depending on others and you will feel confident about your drinking water. | TOP |

Moving system:  If I move, can I remove the system to bring with me?

This system is very easy to uninstall. There is no need to completely uninstall; just take off the water inlet tubing, close our water inlet needle shut off, and take off the whole system in 5 minutes. You can order a moving-kit from us and you will have a new shut off tap to install in your new residence. | TOP |

Ultra Violet light:  When do we need to add a UV light to our system?

Click to read usage of UV light and when to need it.

The primary usage for a UV light is to disinfect filtered water at a certain flow rate. Bacteria, viruses, and other microorganisms are destroyed by the UV interfering with the DNA and RNA in the organisms' reproductive cycles.
If you are on a municipal water system (chlorinated tap water) in the U.S., chances are you will not need a UV light on top of our Ultra RO System. If you are on well water, or if you suspect your water source is unsafe and want to have extra protection, then you can add a UV light to ensure safe drinking water.   |TOP|