Stages 1-3 & 5 Replacement Filter Set – 4-Pack

(2 customer reviews)


  • Stages 1-3 & 5 replacement filter set for OROS-50, OROS-80 & OROS-80-ALK
  • Fits OROS-50, OROS-80 & OROS-80-ALK systems
  • Compatible with standard sized under-sink reverse osmosis systems

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The Olympia Water Systems 4-Pack replacement filter set for stages 1-3 & 5 includes a 5 micron polypropylene sediment filter, (2) 5 micron coconut shell carbon block filters, and an inline coconut shell post carbon filter. Compatible with OROS-50, OROS-80 and OROS-80-ALK reverse osmosis systems and standard sized under-sink reverse osmosis systems. The filters are industry standard sized to fit in under-sink reverse osmosis systems with standard 10″ filters.

The sediment filter removes sand, silt, dirt and rust particles. The carbon block filters reduces chlorine, taste and odor. Carbon block also removes Volatile Organic Carbon Compounds, Insecticides/Pesticides & Chemicals*. Inline coconut shell post carbon filter for reduction of chlorine, taste and odor. Depending on usage and feed water quality, the stage 1, 2 & 3 filters are typically replaced every 6-12 months. *These claims are based on manufacturer testing. These claims are not certified by NSF.

UPC 859276006434

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4.5 out of 5 stars

2 reviews

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  1. We like Olympia Water Systems.

    Steve C.

    Just what we needed. Good products and service at a good price. We like Olympia Water Systems.

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  2. Water Taste Good Again

    Gramps245 (verified owner)

    Easy to replace filters. Water taste great again.

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Olympia Water System products have a 30 day money-back guarantee from the date of purchase. All return shipping fees are the customer’s responsibility unless the return is due to manufacturer error or defect. For details on our Return Policy and Product Warranty please visit our Terms & Conditions and Warranty pages.


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