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Water filtration

Water filtration

Pentair GRO-2550 reverse osmosis drinking water system

An under sink reverse osmosis system treats drinking water at a dedicated tap. The Pentair GRO-2550 combines prefiltration with a high recovery membrane and a storage tank. It is separate from whole house filtration and water softening.

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GRO-2550 system details

DetailSpecification
SystemFour stage reverse osmosis drinking water system
MembranePentair GRO-50 high recovery encapsulated membrane
Nominal membrane production50 gallons per day under rated conditions; actual production varies with temperature, pressure and feed water
PrefiltersSediment depth filter and carbon block prefilter
DeliveryFiltered water delivered from a storage tank
Manufacturer pressure range40 to 100 psi; the installation must also meet local plumbing requirements

Manufacturer specifications describe the system, not a guaranteed daily yield at every home. Confirm the exact model and feed water suitability before installation.

What to check before installation

The quote should account for the dedicated faucet, under sink space, supply connection, storage tank and drain arrangement. Ask whether the refrigerator can be connected if you want filtered water there too.

RO treatment is for the drinking water connection. It does not soften the whole home's water. Feed water quality affects the membrane and may require pretreatment; the installer checks suitability against the manufacturer's requirements.

Filters, service and the written quote

Prefilters, the membrane and postfilter have their own replacement requirements. Follow the manufacturer's schedule and adjust service to water conditions. A falling flow rate or a change in taste should be investigated rather than ignored.

Ask for the current installed price, included filter packs, future service charges and parts and labor coverage in writing. The quote confirms today's package; a historical price or filter promotion does not establish a current offer.

Confirm the right equipment and the complete price before you decide.