What is the Maintenance on a POU Reverse Osmosis System?
The RO system requires that the Pre and Post Carbon Filters be changed once a year for full time residents and every other year for part time residents. However, part time residents will need a special post filter to prevent bacteria from growing in the system while they are absent.
The RO system also has a membrane that is the heart of the system and removes all the contaminants leaving the water absolutely purified. It is replaced every 4 years. At the four year mark the membrane should be tested to determine the strength of its removal of contaminants.