My water tastes flat - is this the filter to change?

Usually yes. Flat or stale taste at the faucet is most often the polish stage reaching the end of its life.

Authorized Puronics Dealer

(855) 684-7663

PURONICS Carbon Block Replacement Filter

PURONICS Premium Alkaline Replacement Filter

Replacement Filters

PURONICS Carbon Block Replacement Filter

SKU ICW-CB-01 Backordered(1)

A dense, extruded carbon block gives water more contact time than loose media, which is why this stage is where taste and odor really change. Positioned after the membrane, it polishes the finished water on its way to the faucet.

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Replace

Every 12 months

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Fits your system

This pack is a direct-fit replacement for:

iContracting Water RO drinking water systems
Stage 5 polish position on qualifying under-sink systems

Not sure which system you have? Call (855) 684-7663 and we'll confirm the right parts for you.

Reorder & maintenance reminder

Filters & cartridges: every 6–12 months. Sediment, carbon and alkaline stages lose capacity within a year on Central Florida water.
Membranes & media: every 2–3 years. RO membranes and tank media last longer, but should be checked at the 2-year mark.
This item's schedule: Every 12 months

Installed on

Next replacement

July 31, 2027

Features

Extruded carbon block for extended contact time
Reduces chlorine taste and odor
Targets common taste-affecting contaminants
Low pressure drop across its service life
Food-grade materials throughout

Specifications

Stage: Post-membrane polish (Stage 5)
Media: Extruded carbon block
Nominal rating: 1 micron
Service life: Approximately 12 months

Compatible systems

iContracting Water RO drinking water systems
Stage 5 polish position on qualifying under-sink systems

Installation recommendations

1Relieve system pressure at the RO faucet.
2Disconnect the inline fittings and remove the old cartridge.
3Fit the replacement in the direction of the flow arrow.
4Restore pressure and flush before drinking.

Frequently asked questions

Customer reviews

"Noticeable difference in taste within a day of installing."

Priya S.