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If Millennium replacement filters and membranes are not used, health related contaminant reduction claims are invalid.

Reverse Osmosis Drinking Water System 

Model MRO-35

PERFORMANCE DATA SHEET

Millennium

This reverse osmosis system contains replaceable treatment components critical for effective performance. It is the user’s responsibility to, and 

the manufacturer strongly recommends that the user, periodically test the product water to verify that system is performing satisfactorily.

A note for systems with the Water Quality Monitor:
The Water Quality Monitor has been integrated into the system cover for instant monitoring at the touch of a button. The monitor compares 

the level of the total dissolved solids in the incoming (feed) water versus the product water and calculates the percent rejection. The monitor is 

preset to indicate a level of 75% rejection. NSF/ANSI Standard 58 requires a 75% total dissolved solids rejection to pass the requirement of the 

standard.
A green light indicates that the percent rejection is at or above the set (desired) value and that the system is producing quality water. 
An amber light indicates that the product water quality is less than acceptable. Because the Water Quality Monitor was designed to operate best 

while the system is making water, a false reading may occur if tested when your R.O. drinking water system is not making water. Please empty 

the storage tank, wait 15 minutes for the system to begin making water, and test your water quality again.

 If the Water Quality Monitor light is 

still amber, change the 9 volt battery and test your water quality again. If the Water Quality Monitor light is still amber, please contact a water 

treatment professional for service. The Water Quality Monitor requires a 9 volt battery, which is included.

Tested  and  Certified  by  NSF  International  against 
NSF/ANSI 

Standard 

58 

for 

the 

reduction 

of: 

 

Arsenic  (Pentavalent),  Barium,  Cadmium,  Chromium 
(Hexavalent), Chromium (Trivalent), Copper, Cyst, Fluoride, 
Lead, Nitrate, Nitrite, Radium 226/228, Selenium and TDS.

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