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Watts Water Quality & Conditioning Products
13700 Highway 90 West
San Antonio, Texas 78245 USA
WQC4 RO
System conforms to NSF Standard 58 for specic claims.
RECOMMENDED REPLACEMENT PARTS AND CHANGE INTERVALS:
Note: Depending on incoming feed water conditions replacement time frame may vary.
Description Change time Frame
Sediment Pre-lter: 6 Months
Carbon Pre-lter: 6 Months
Final Carbon lter 12 Months
R.O. Membrane: 2 to 5 years
This system has been tested according to NSF/ANSI 58 for reduction of the substances listed below. The concentration of the indicated substances in water
entering the system was reduced to a concentration less than or equal to the permissible limit for water leaving the system as specied in NSF/ANSI 58. This
system has been tested for the treatment of water containing pentavalent arsenic (also known as As (V), As (+5), or arsenate) at concentrations of 0.30 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 chloramine (combined
chlorine) is not sufcient to ensure complete conversion of trivalent arsenic to pentavalent arsenic, Please see the Arsenic Facts section of the Performance Data
Sheet for further information.
Avg. In. Avg. Eff. % Reduction pH Pressure Max Eff. Inf. challenge Max Allowable
(mg/L) (mg/L) mg/L concentration concentration
mg/L mg/L
Arsenic (Pentavalent) .310 0.001 99.6% 7.24 50psi 0.002 0.30±10% 0.010 mg/L
Barium Reduction 9.2 0.08 99.0% 7.64 50psi 0.12 10.0±10% 2.0
Cadmium Reduction 0.031 0.0004 98.0% 7.49 50psi 0.0008 0.03±10% 0005
Chromium (Hexavalent) 0.30 0.002 99.0% 7.24 50psi 0.004 0.03±10% 0.1
Chromium (Trivalent) 0.30 0.001 99.0% 7.64 50psi 0.002 0.03±10% 0.1
Copper Reduction 3.2 0.02 99.0% 7.40 50psi 0.04 3.0±10% 1.3
Cysts 92,000#/ml 3 #/ml 99.99% 7.44 50psi 18 minimum 50,000/mL N/A
Fluoride Reduction 8.7 0.19 97.0% 7.24 50psi 0.3 8.0±10% 1.5
Lead Reduction 0.15 0.002 98.8% 7.39 50psi 0.005 0.15±10% 0.0107
Nitrate 27 3.8 86.0% 7.24 50psi 4.3 27.0 ±10% 10.0
Nitrite 3.1 0.41 86.0% 7.24 50psi 0.46 3.0 ±10% 1.0
Nitrate + Nitrite 30 4.2 86.0% 7.24 50psi 4.8 30.0 ±10% 10.0
Perchlorate 0.14 0.003 97.0% 7.39 50psi 0.005 mg/L 0.10±10% 0.006
Radium 226/228 25pCi/L 5pCi/L 80.0% 7.24 50psi 5pCi/L 25pCiL±10% 5pCiL
Selenium 94.85 <0.2 97.0% 7.24 50psi <0.2 0.10±10% 0.05
TDS 741 22 97.0% 7.28 50psi 26.0 750±40mg/L 187
Turbidity 11.3 0.1 99.0% 7.43 50psi 0-1 11±1mg/L 0.5NTU
Recovery - 15.77% Daily Production Rate - 18.43 GPD Efciency - 8.82%
Depending on water chemistry, water temperature, and water pressure Watts Water Quality R.O. Systems production and performance will
vary. Efciency rating means the percentage of the inuent water to the system that is available to the user as reverse osmosis treated water
under operating conditions that approximate typical daily usage. Recovery rating means the percentage of the inuent water to the membrane
portion of the system that is available to the user as reverse osmosis treated water when the system is operated without a storage tank or when
the storage tank is bypassed. There is an average of 4 gallons of reject water for every 1 gallon of product water produced.
REFER TO OWNER’S INSTALLATION/SERVICE MANUAL FOR FURTHER MAINTENANCE REQUIREMENTS AND WARRANTY
INFORMATION.
GENERAL USE CONDITIONS:
1. System to be used with municipal or well water sources treated and tested on regular basis to insure bacteriological safe quality. DO NOT use with water that
is microbiologically unsafe or unknown quality without adequate disinfection before and after the system. Systems certied for cyst reduction may be used on
disinfected water that may contain lterable cysts.
2. This system is acceptable for treatment of inuent concentrations of no more than 27 mg/L nitrate and 3 mg/L nitrite in combination measured as N and is
certied for nitrite/nitrate reduction only for water supplies with a pressure of 280 kPa (40 psig) or greater. If your water supply is under 40 psi Watts Premier
recomends the use of a RO booster pump for proper operation.
3. Operating Temperature: Maximum: 100°F (40.5°C) Minimum: 40° (4.4°)
4. Operating Water Pressure: Maximum: 100 psi (7.0kg/cm2) Minimum: 40 psi (2.8kg/cm2)
5. pH 2 to 11
6. No iron present in incoming feed water supply.
7. Hardness of more than 10 grains per gallon (170 ppm) may reduce RO membrane life expectancy.
8. Recommend TDS (Total Dissolved Solids) not to exceed 1800 ppm.
TECHNICAL & WARRANTY INFORMATION
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