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Reverse Osmosis Drinking Water System
Model: VRO-3Q, VRO-4Q and VRO-5Q
The system must be installed and operated in accordance with manufacturer’s recommended
procedures and guidelines. Failure to follow the instructions may result in the leakage,
malfunction and will void warranty.
Read this performance date and compare the capabilities of this unit with your actual water
treatment needs. It’s recommended that you have your supply water tested to determine your
actual water treatment needs.
Arsenic Fact Sheet
This system has been tested for the treatment of water containing pentavalent arsenic (also
known as As(V), As(+5) or Arsenate) at concentration of 0.30 mg/L or less. The systems reduce
pentavalent arsenic, but may not reduce other forms of arsenic. These systems are also to
be used on the water supplies containing a detectable free chlorine residual or own water
supplies that have been demonstrated to contain only pentavalent arsenic. Treatment with
Chloramine (combined chlorine) is not sufficient to ensure complete conversion of trivalent
arsenic to pentavalent arsenic.
Arsenic is a naturally occurring contaminant found in many ground waters. There are two forms
of arsenic: Pentavalent Arsenic [also called as As(V), As(+5) or Arsenate] and Trivalent Arsenic
[As (III), As (+3) and Arsenite]. Although both forms are potentially harmful to human health,
trivalent arsenic is considered more harmful than pentavalent arsenic.
Arsenic in water has no color, taste or odor. It must be measured by a lab test. Public water
utilities must have their water tested for arsenic. You can get the results from your water utility. If
you have your own well, you can have the water tested. The local health department or state
environmental health agency can provide a list of certified labs.
RO systems do not remove trivalent arsenic from water very well. RO systems are very effective
at reducing pentavalent arsenic. If you have free chlorine residual in contact with your water
supply for at least one minute, the trivalent arsenic will be converted to pentavalent arsenic
and reduced by RO systems. Other water treatment chemicals, such as: ozone and potassium
permanganate, will also change trivalent arsenic to pentavalent arsenic. A combined chlorine
residual (also called chloramine) may not convert all the trivalent arsenic. If you get your
water from a public water utility, contact the utility to find out if free chlorine or combined
chlorine is used in the water system.
The system requires regular replacement of all filters to maintain proper operation. Depending
on usage and influent water quality, the sediment and carbon filters should be changed at
least annually and the RO membrane should be replaced very 3 years. Variation of chlorine,
sediment or TSD levels may affect replacement frequency.
Performance Data:
