• For parts and service availability, please contact your local dealer or Coway.
• This system is acceptable for treatment of influent concentrations of no more than 27 mg/L nitrate and 3 mg/L
nitrite in combination measured as N and is certified for nitrate/nitrite reduction only for water supplies with a
pressure of 2.8 kgf/cm
2
(40 psi) or greater.
• A nitrate/nitrite sampling kit should be used to monitor the nitrate/nitrite levels in your product drinking water
at least every six months. Kits maybe purchased from your local dealer or Coway.
• This system has been tested for the treatment of water containing pentavalent arsenic (also know as As(V),
As(+5), or arsenate) at concentrations of 0.050 mg/L or less. This system reduces pentavalent arsenic, but
may not remove other forms of arsenic. This system is to be used on water supplies containing a detectable
free chlorine residual at the system inlet or on water supplies that have been demonstrated to contain only
pentavalent arsenic. Treatment with chloramines (combined chlorine) is not sufficient to ensure complete
conversion of trivalent arsenic to pentavalent arsenic. Please see the Arsenic Facts section of this Performance
Data Sheet for further information.
• Efficiency rating means the percentage of the influent water to the system that is available to the user as reverse
osmosis treated water under operating conditions that approximate typical daily usage.
• The product water should be tested every 6 months to ensure that the contaminants are being reduced
effectively. Please contact your local dealer or Coway to initiate this service.
• This reverse osmosis system contains a replaceable treatment components, critical for the effective reduction of
total dissolved solids and that product water shall be tested periodically to verify that the system is performing
properly. Replacement of reverse osmosis component should be with one of identical specifications, as defined
by the manufacturer, to assure the same efficiency and contaminant reduction performance.
• The estimated replacement time of filter, which is a consumable part, is not an indication of quality guarantee
period, but it means the ideal time of filter replacement. Accordingly, the estimated time of filter replacement
may be shortened in case it is used in an area of poor water quality.
Model of Filter
Type
Usable period (months)
COST US $
WNF8-S
NEO-SENSE FILTER
6
46.00
WJMF8-20-S
RO MEMBRANE FILTER
20
94.00
WJIF8 –S
INNO SENSE FILTER
18
47.00
WJCC-02
CERAMIC FILTER
12
11.00
ARSENiC FACTS
Arsenic (abbreviated As) is found naturally in some well water. 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 the state environmental health agency can provide a list of certified labs. The cost is typically $15 to $30.
Information about arsenic in water can be found on the Internet at the US Environmental Protection Agency
website:
www.epa.gov/safewater/arsenic.html
There are two forms of arsenic: pentavalent arsenic (also called As(V), As(+5), and arsenate) and trivalent arsenic
(also called As(III), As(+3), and arsenite). In well water, arsenic may be pentavalent, trivalent, or a combination of
both. Special sampling procedures are needed for a lab to determine what type and how much of each type of
arsenic is in the water. Check with the labs in your area to see if they can provide this type of service.
Reverse osmosis (RO) water treatment systems do not remove trivalent arsenic from water very well. RO systems
are very effective at removing pentavalent arsenic. A free chlorine residual will rapidly convert trivalent arsenic
to pentavalent arsenic. 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 P-07CL system is designed to remove pentavalent arsenic. It will not convert trivalent arsenic to pentavalent
arsenic. The system was tested in a lab. Under those conditions, the system reduced 0.050 mg/L pentavalent
arsenic to 0.010 mg/L (ppm) (the USEPA standard for drinking water) or less. The performance of the system may be
different at your installation. Have the treated water tested for arsenic to check if the system is working properly.
The RO component of the P-07CL system must be replaced every 24 months to ensure the system will continue to
remove pentavalent arsenic. The component identification and locations where you can purchase the component
are listed in the installation/operation manual.
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