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 micro biologically unsafe or unknown quality without adequate disinfection before and after the
system.
2. Operating Temperature:
Maximum: 100°F (40.5°C)
Minimum: 40° (4.4°)
3. Operating Water Pressure:
Maximum: 100 psi (7.0kg/cm2)
Minimum: 40 psi (2.8kg/cm2)
4. pH
2 to 11
5. Maximum iron present in incoming feed water supply must be less than 0.2 ppm.
6. Hardness of more than 10 grains per gallon (170 ppm) may reduce membrane life expectancy.
7. Recommend TDS (Total Dissolved Solids) not to exceed 1800 ppm.
WATTS WATER QUALITY
8716 W. Ludlow Drive #1
Peoria, AZ 85381 USA
MODELS: 315, 415, 525, 525P
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 specified 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 sufficient 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)
0.3
0.001
99.6%
50psi
0.004
0.30±10%
0.010 mg/L
Barium Reduction
10
0.12
98.8%
7.24
50psi
0.23
10.0±10%
2.0
Cadmium Reduction
0.03
0.0003
98.8%
7.49
50psi
0.0008
0.03±10%
0005
Chromium (Hexavalent) 0.29
0.003
99.1%
7.24
50psi
0.007
0.03±10%
0.1
Chromium (Trivalent)
0.29
0.001
99.7%
7.24
50psi
0.001
0.03±10%
0.1
Copper Reduction
2.9
0.03
99.0%
7.64
50psi
0.05
3.0±10%
1.3
Cysts
170000/ml
5/ml
99.99%
50psi
29 minimum 50,000/mL 99.95
Fluoride Reduction
8.4
0.2
97.7%
7.49
50psi
0.3
8.0±10%
1.5
Lead Reduction
0.15
0.001
99.3%
7.49
50psi
0.001
0.15±10%
0.010
Radium 226/228
25pCi/L
5pCi/L
80.0%
7.24
50psi
5pCi/L 25pCiL±10%
5pCiL
Selenium
0.10
0.002
98.1%
50psi
0.002
0.10±10%
0.05
TDS
790
29
94.5%
7.80
50psi
47
750±40mg/L
187
Turbidity
11 NTU
0.1 NTU
98.9%
50psi
0.4 NTU 11±1 NTU
0.5 NTU
Recovery - 13.09%
Daily Production Rate - 14.33 GPD
Efficiency - 7.44%
16
Depending on water chemistry, water temperature, and water pressure Watts R.O. Systems production and performance will vary.
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. Recovery rating means the percentage of the influent 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. Watts
210-677-8400 or Fax 210-677-8402.
REFER TO OWNER’S INSTALLATION/SERVICE MANUAL FOR FURTHER MAINTENANCE
REQUIREMENTS AND WARRANTY INFORMATION.
