5-Stage RO

iSpring RCC7 Under-Sink RO

A 5-stage under-sink reverse osmosis system, NSF Certified to ANSI 58, producing up to 75 gallons of clean water a day and removing up to 99% of contaminants of PFAS, lead and chlorine.
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The iSpring RCC7 under-sink 5-stage reverse osmosis water filter system with its brushed nickel faucet on a clean studio surface.

Built to filter, built to last

Each stage does a distinct job, from sediment and carbon pre-filters catching rust and chlorine to the reverse osmosis membrane removing the finest dissolved particles, then a final polish for taste. It mounts inside a standard base cabinet.

Five stages, each with a job

Sediment and carbon pre-filters catch rust, sand and chlorine before they reach the membrane, protecting the most delicate stage and keeping replacement costs predictable over time.

Lead-free faucet at the sink

The included faucet is lead-free and finished in brushed nickel, so the water path stays clean from the tank to the glass and the fixture looks at home in a modern kitchen.

Leak-resistant, low-maintenance build

Housings, tubing and connections are built to run under the sink without drips, and owners report years of leak-free service with straightforward filter changes.

The iSpring RCC7 5-stage reverse osmosis unit with its filter housings, storage tank and brushed nickel faucet arranged for inspection.
Clear filtered water pouring from a brushed nickel under-sink faucet into a glass beside the iSpring RCC7 filtration unit in an open kitchen cabinet.
Cleaner Water at Every Tap

Water your family can trust daily

A filled glass of clear filtered water resting on a clean kitchen counter beside the iSpring RCC7 under-sink unit.

Great-tasting water on demand

Five stages reduce chlorine, sediment and common impurities, so drinking and cooking water comes out clean and better tasting straight from the faucet — no hauling jugs or waiting on a delivery.

Spotless drinking glasses and a plate drying on a rack after being washed with iSpring RCC7 filtered water.

Confidence with every glass poured

NSF Certification to ANSI 58 and removal of up to 99% of contaminants, including PFAS, lead and chlorine, give you a documented standard to point to rather than a marketing claim alone.

A stainless stockpot on a stovetop filled with clear water for cooking, with the iSpring RCC7 visible under the nearby sink.

Low upkeep over years of daily use

Owners describe leak-free performance and easy routine filter changes across years of daily use, and the lead-free faucet keeps the water path clean all the way to the glass.

A kitchen counter set up for daily water needs with glasses, a cooking pot and a pitcher, and the iSpring RCC7 installed beneath the sink.

Where the RCC7 fits your home

From city water that tastes of chlorine to well water carrying sediment, the RCC7 covers the point where your household actually drinks and cooks, which is where clean water matters most.

Homes on city water with taste issues

City tap water carrying chlorine taste or odor improves right away. The carbon stages polish the flavor, so a glass of tap water is something you actually want to drink instead of avoiding.

Households on well or hard water

Well and hard-water properties often push sediment and minerals through the pipes. The pre-filters trap sediment while the membrane handles dissolved contaminants where you fill your glass.

Families that cook and drink at home

Daily cooks, bottle refills and morning coffee all draw from the same faucet, and the 75-gallon daily rating covers that routine with room to spare, without tracking jugs to the store.

Install it once, then maintain it easily

A kitchen base cabinet opened for installing the iSpring RCC7, with the unit, tubing, faucet and simple tools arranged around it.
The iSpring RCC7 filter housing assembly positioned against the inner wall of a kitchen base cabinet for mounting.

Mount the unit inside the cabinet

Check clearance, mark the bracket against the side wall and secure the manifold where the housings can still swing out for future filter changes. Keeping it off the floor protects it from any moisture.

Color-coded tubing linking the iSpring RCC7 unit to the water supply line, drain pipe and under-sink faucet.

Connect the feed, drain and faucet

Shut off the cold-water supply, tee into it with the feed line, mount the drain saddle on the drain pipe and route tubing to the faucet hole, keeping every run free of kinks.

Fresh replacement filter cartridges lined up beside the open iSpring RCC7 housings during a routine filter change.

Flush now, then change filters on schedule

Flush the system before first use, then replace the cartridges on a set schedule. Note the date on the housings so a busy season does not push maintenance past its useful life.

Real Owners, Real Outcomes

Ten years in, still going strong

I have used this system every day since 2018 and it works brilliantly and is easy to maintain. When I finally sprung a leak, support walked me through the fix right away. That combination of a system that lasts and people who actually answer is why I keep recommending it to friends.
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Dana M.
Nine years of daily use, still reliable
We installed our iSpring under-sink filter about a week ago and the difference in the water we drink and cook with is obvious. It tastes clean, and I feel good about what goes into the pot every night. Setup turned out to be simpler than either of us expected.
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Priya S.
A week in and already loving the taste
My package arrived and the support rep went further than I expected, following up until everything was sorted. I now have one system at my house and systems for both of my daughters. That kind of repeat business is earned by showing up when something goes wrong.
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Marcus L.
Customer support that actually solves it
My iSpring RCC7 5-stage system was bought in 2018 and is still going strong. With regular filter changes and basic maintenance the water tastes very good, and replacement filters stay reasonably priced, which matters a great deal over seven or eight years of ownership.
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Ellen R.
Same unit since 2018, filters still affordable
I bought this about ten years ago when our city switched to lake water as its source, and it performed flawlessly the whole time, dramatically improving taste and purity. Installation was simple and routine maintenance is easy, so the system quietly did its job every single day.
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Tom B.
Ten years of flawless performance

Questions Before You Buy

Straight answers on capacity, installation, certification and filter changes, so you can judge the fit before you order.
It is rated at 75 gallons per day under ideal feed-water conditions. Real output varies with your incoming pressure and temperature, so most households keep it as the drinking and cooking supply.
The system is NSF Certified to ANSI 58, covering structural integrity and contaminant reduction claims, so you are relying on a documented standard rather than marketing language alone.
Measure your cabinet first: the unit is 15.5 inches long, 5.1 inches wide and 18 inches high, and you still need room for the storage tank and to swing out the housings for filter changes.
Owners report that routine cartridge changes keep performance steady for years. Exact intervals depend on your water, so follow the manual and watch flow rate and taste for early signs.
The design is built to be leak-free, and owners describe responsive support when a part did give trouble. Keep the cabinet dry and check connections during maintenance for early warning.
An open kitchen base cabinet showing the installed iSpring RCC7 unit with replacement filter cartridges set beside it.

Keep reading before you decide

Installation notes, filter-replacement schedules and side-by-side comparisons help you confirm the RCC7 suits your water conditions and cabinet space before you commit, and point you toward the right cartridges once it is running.
Under-sink reverse osmosis water filtration system with stacked filter housings and blue tubing beside a faucet pouring clear water into a glass

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Modern kitchen scene with clear drinking water poured into a glass beside an undersink reverse osmosis unit and a whole-house filter housing

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