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Waterworld USA SYS-PENTAIR-GRO50

Reverse osmosis system

SYS-PENTAIR-GRO50 5-Stage RO Compatible Replacement Filters

This 5 stage RO system features a sediment pre-filter, 2 carbon block pre-filters, a 50 GPD TLC low waste RO quick connect encapsulated membrane, and an inline GAC post filter. You can find and order all your filters at once in our replacement kits below.

See the replacement schedule

Compatible parts

Everything that fits the Waterworld USA SYS-PENTAIR-GRO50

Ready Water RW-SED2510050 5-micron sediment filter, direct replacement for 93023 and PX05-9 7/8
Ready Water
Ready Water RW-SED2510050 Sediment Filter 5 Micron 2.5" x 10"
(89)
$8.99$12.99
Meets FDA requirements for food and beverage contact
Omnipure OMB934-5m 5-micron carbon block filter for standard 10-inch water filter housings
Omnipure
Omnipure OMB934-5m Carbon Block Filter 5 Micron 2.5" x 10"
(83)
$14.99$18.74
Reduces chlorine, taste and odor
NSF Certified performance
USA made compression molded
2.5" Drop-in carbon block element
Pentair 4004424 GRO-50EN high-efficiency reverse osmosis membrane, 50 GPD, with integrated flow control
Free Shipping
Pentair
Pentair GRO-50EN 1:1 RO Membrane 50 GPD With Flow Control 4004424
(7)
$149.00$173.75
Thin Layer Composite (TLC)
Permeate Check Valve
Drainline Flow Control
Encapsulated Membrane Style
Pentair GRO-50EN 4002574 high-efficiency 50 GPD reverse osmosis membrane without flow control
Pentair
Pentair GRO-50EN 1:1 RO Membrane 50 GPD 4002574 - No Flow Control
(3)
$119.00$123.75
Thin Layer Composite (TLC)
Permeate Check Valve
Encapsulated Membrane Style
Omnipure CL10ROT33-BB 5-micron inline GAC carbon filter with 1/4-inch female threads
Omnipure
Omnipure CL10ROT33 Inline Carbon Filter GAC 5 Mic 2" x 10"
(62)
$12.99$16.24
Reduces chlorine, taste and odor
NSF 42 Certified
Select an option

Replacement filter info

Your replacement schedule

Each stage of the Waterworld USA SYS-PENTAIR-GRO50, the exact part that fits it, and when to change it.

  1. Stage 1: Sediment filter

    Part RW-SED2510050, Ready Water RW-SED2510050 Sediment Filter 5 Micron 2.5" x 10" $8.99

    Every 6–12 months

  2. Stages 2 to 3: Carbon block filter × 2

    Part OMB934-5m, Omnipure OMB934-5m Carbon Block Filter 5 Micron 2.5" x 10" $14.99 each

    Every 6–12 months

  3. Stage 4: RO membrane

    Part 4004424, Pentair GRO-50EN 1:1 RO Membrane 50 GPD With Flow Control 4004424 $149.00

    Every 2 years

  4. Alternative for stage 4: RO membrane

    Part 4002574, Pentair GRO-50EN 1:1 RO Membrane 50 GPD 4002574 - No Flow Control $119.00

    Every 2 years

  5. Stage 5: Post carbon filter

    Part CL10ROT33-BB, Omnipure CL10ROT33 Inline Carbon Filter GAC 5 Mic 2" x 10" $12.99

    Every 6–12 months

Manuals & instructions

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