Watts Ro-Pure 531411 and 531407 RO System


This 4 stage RO system use sediment and carbon block pre-filters to reduce sediment, chlorine and chlorine by-products before the membrane filters out impurities larger than .001 microns. The GAC post filter treats for taste and odor. Color-coded labels make it easier to identify the filters you need.


NOTE: Because of corporate restructuring by Watts, we no longer have access to RO Pure or Filter Pure filter cartridges and must be ordered from a dealer or online.



  • STAGE 1 – Sediment Pre-Filter (105311) – Replace Every 12 Months
  • STAGE 2 – Carbon Block Pre-Filter (105351) – Replace Every 12 Months
  • STAGE 3 – RO Membrane TFC 36 GPD (105331) – Replace Every 24 Months
  • STAGE 4 – Carbon GAC Post Filter (105341) – Replace Every 12 Months

PDF iconWatts RO-Pure System Manual