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iSpring RCC7 Review

One of the best ways to provide filtered and desirable water for your home
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iSpring RCC7 Review
Credit: Abriah Wofford
Price:  $220 List
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Manufacturer:   iSpring
By Graham Faulknor and Isaac Laredo  ⋅  Nov 28, 2023
90
OVERALL
SCORE


RANKED
#1 of 9
  • Contaminant Removal - 60% 10.0
  • Taste - 30% 7.9
  • Setup and Use - 10% 6.5

Our Verdict

The iSpring RCC7 is a popular and affordable reverse osmosis filter that offers superb filtration taste. The 5-stage filtration produced top results in our contaminant removal and left the least total contaminants of any filter. The filter also received high praise for its nearly bottled water-like taste. The setup and daily use are comparable to other reverse osmosis filter models and will take time and space to set up. The main drawback is the shorter lifespan of the stage 1-3 filter sets. While the annual cost is still lower, it requires more maintenance time. Overall, the iSpring RCC7 is an excellent choice in our review of water filters.
REASONS TO BUY
Superb filtration
Widely enjoyed taste
Low annual cost for reverse osmosis
REASONS TO AVOID
Time-consuming installation
Shorter stage 1-3 filter life

Compare to Similar Products

 
ispring rcc7
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iSpring RCC7
Awards Editors' Choice Award
Best Under Sink Filter
Editors' Choice Award
Best Pitcher Water Filter
Best Buy Award
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Best Buy Award
Best Value Under-Sink Filter
 
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Bottom Line If you have space and are willing to install a one-time system, this is the best way to purify your waterTop-notch filtration and convenience at an affordable price pointA low-cost pitcher that easily produces high-quality waterReduced installation hassle, comparable filtering power, and lowest yearly costAn easy-to-use water pitcher that produces good-tasting water, but struggles to remove certain contaminants
Rating Categories iSpring RCC7 ZeroWater 10-Cup 5-... PUR Classic 11 Cup... APEC WFS-1000 Brita Tahoe 10-Cup...
Contaminant Removal (60%)
10.0
10.0
8.3
8.4
5.9
Taste (30%)
7.9
6.6
9.0
7.9
8.5
Setup and Use (10%)
6.5
8.1
8.4
8.1
8.4
Specs iSpring RCC7 ZeroWater 10-Cup 5-... PUR Classic 11 Cup... APEC WFS-1000 Brita Tahoe 10-Cup...
Type Reverse Osmosis Pitcher Pitcher 3 Stage under sink Pitcher
Measured Annual Cost $50.00 $57.50 $36.00 $40.00 $30.49
Replacement Schedule Stage 1 - 3, every 6 months
RO, every 2-3 years
Post carbon, every 12 months
After 18,000 mg of dissolved solids; 1-40 gallons 40 gallons or 2 months Every 12 months After 120 gallons (about every 6 months)
Replacement Cost 2 year supply for $100 2 for $30
4 for $40
8 for $90
12 for $115
16 for $150
$24 for a 4 pack Stages 1-3 for $40 $18.40 per filter, $30.49 for two
NSF/ANSI certified Certified to NSF/ANSI 58 N/A NSF certified to reduce chlorine, mercury, copper, zinc and other chemical & physical substances NSF Certified filters and tubing N/A
Measured Chlorine Removal 100% 100% 95% 100% 75%
Measured Fluoride Removal 100% 100% 100% 100% 37%
Measured Sulfate Removal 100% 100% 35% 39% 43%
Measured Copper Removal 100% 100% 88% 100% 17%
Measured Iron Removal 100% 99% 85% 46% 35%
Measured Lead Removal 100% 100% 100% 100% 100%
Model RCC7 10 Cup 11 Cup WFS-1000 10 Cup
Pure Water to Waste Water Ratio 2:1 N/A N/A N/A N/A
Other certifications In strict accordance with American quality standards IAPMO certified to reduce PFOA/PFOS, lead, chromium and mercury N/A FDA Certified JG Food grade tubing IAPMO R&T certified against NSF/ANSI Standard 53
WQA certified against NSF/ANSI Standards 42, 53,
and 401

Our Analysis and Test Results

The iSpring RCC7 is a popular reverse osmosis filter because of its attractive price point, superb filtration, overall taste, and simplified setup. Despite being an overall simpler system, it is still one of the higher-capacity filters within our review and rated for 75 gallons a day. For consumers looking for additional stages, the RCC7 is offered in a few different configurations, including UV or alkaline remineralization filters. This simple yet effective filter was the top performer in our review, removing almost all of the contaminants we used during testing.

Performance Comparison


The iSpring is a popular choice for its modern looks and premier filtration.
Credit: Abriah Wofford

Contaminant Removal


Water filters are becoming essential household items across the country. Unless your water comes from a pristine alpine lake surrounded by snowcapped peaks, erosion-resistant granite, and environmental regulations, you likely want a water filter. Not every tap source is considered safe, and most are far from delicious. To determine the water filters that work best, we carried out a study where we made a water sample containing high amounts of chlorine, iron, sulfate, lead, fluoride, and copper. Subsequently, we sent this sample to an independent water quality facility, Western Environmental Testing Laboratories, to assess the quality of the filtered water. The iSpring RCC7 was one of the most effective filters within our review as it cleaned the majority of contaminants from the sample.


The iSpring water filter showcased its exceptional performance by completely eradicating 100% of chlorine (12mg/l out of 12mg/l) from the water sample. Chlorine, typically used as a disinfectant, can adversely affect the water's taste and aroma. It also successfully eliminated 100% of fluoride (10mg/l out of 10mg/l).

Continuing its impressive performance, the iSpring effectively purged 100% of copper (52 mg/l out of 52 mg/l) from the water. High levels of copper can trigger gastrointestinal discomfort and may even cause liver or kidney damage over time. It also completely erased 100% of lead contents (.02 mg/l out of .02 mg/l), a toxic metal that threatens human health even at minimal exposure levels.

ispring rcc7 - the turbid and murky water is our control concoction to put each...
The turbid and murky water is our control concoction to put each filter to the test.
Credit: Graham Faulknor

The iSpring managed to eliminate 99.88% of sulfates (2297.3 mg/l out of 2300 mg/l). High sulfate concentrations in water can potentially cause diarrhea. It also produces a generally unpleasant odor and taste. In addition, the model also removed 99.91% of iron (629.42 mg/l out of 630 mg/l). While iron is a necessary nutrient, its excess in water can lead to a metallic taste and can stain faucets. Notably, the sample originally had 3004.2 mg/l of contaminant, and the filtered sample possessed a mere 3.28 mg/l.

ispring rcc7 - high-quality data is central to our testing process. we send our...
High-quality data is central to our testing process. We send our water samples to a third-party lab (Western Environmental Testing Laboratory) for analysis.
Credit: Graham Faulknor

Taste


Nothing beats the refreshing taste of cold, clean water. Water filters like the iSpring RCC7 provide delicious and clean water straight from your tap. Taste can be subjective, so we conducted a blind taste test with our team to rank and describe the taste of water filtered by each unit. The filters processed water from a garden hose to produce the samples. The water from the iSpring is widely liked by our test team, and most individuals rated it above average with a neutral, crisp, odorless nature.


The purified water from the iSpring RCC7 filter is similar to bottled water with low mineral content. For those who prefer mineral water, the iSpring offers the RCC7AK, which includes an alkaline remineralization stage to add minerals back to the drinking water. The RCC7 filter provides near-bottled water quality to your kitchen. It improves the drinking water experience and removes or reduces metallic and chemical tastes from most water sources.

ispring rcc7 - our test team struggled to differentiate bottled water from the...
Our test team struggled to differentiate bottled water from the iSpring.
Credit: Jenna Ammerman

Setup and Use


The Setup and Use metric evaluates the difficulty of the installation and setup process while factoring in the annual cost, required maintenance, and wastewater ratio. To help you find the best water filter for your long-term needs, we install each filter in our standardized test kitchen, filter plenty of water, conduct maintenance, and calculate the observed waste water ratios from our testing. The iSpring has a standard DIY-friendly installation and maintenance process, low annual cost, and competitive efficiency.


Reverse osmosis filters are a more elaborate and space-intensive setup than standard types because of the extra faucet and sink. It is designed with DIY installation in mind. It comes with easy-to-follow instructions and also has a well-done YouTube video to support the process. A DIYer should be able to install it in a couple of hours. The most challenging and intimidating part of the installation process of any reverse osmosis filter is the additional faucet. If the process seems beyond your comfort zone, a plumber can make quick work of the installation. The setup process is simpler than that of other filters as it requires the tank to be filled and emptied until no sediment comes out. This generally takes one to three rounds to accomplish.

The maintenance of the iSpring is to change filters according to the following schedule: stage 1-3 filters every six months, Reverse osmosis every 2-3 years, and the carbon filter every 12 months. The process is comparable to other systems in terms of difficulty and requires a C-spanner wrench. Some of the filters on this model use a filter and casing design. For these filters, unscrew the casing and then replace the internal filter and “O” ring to screw it back into place. While this takes longer than the full replacement filters, it remains a quick process relative to a system with multiple filter changes.

ispring rcc7 - the 1st stage housing allows for easy and immediate detection of...
The 1st stage housing allows for easy and immediate detection of water contaminants through its sediment filter, while also indicating the need for a filter change.
Credit: Abriah Wofford

The lower cost of filters makes this model one of the most affordable reverse osmosis systems annually at $50. The design and filters help improve the overall efficiency of this model as two gallons of wastewater are processed into one gallon of drinking water. The average filter discharges two to three gallons of wastewater per gallon of fresh drinking water, while the most efficient systems are closer to 1:1. The manufacturer recommends routing the remnant wastewater into a different vessel for nonpotable uses.

ispring rcc7 - the faucet is able to rotate 360 degrees.
The faucet is able to rotate 360 degrees.
Credit: Abriah Wofford

Should You Buy the iSpring RCC7?


The iSpring RCC7 stood up to the competition with incredible filtration performance, taste, and user experience. Our testing proved this model to be a best-in-class filter for those seeking a reverse osmosis filter.

What Other Water Filter Should You Consider?


If you want an even more efficient filter, check out the Home Master HydroPerfection. It produces drinking water at a 1:1 ratio. However, if you're looking for a countertop reverse osmosis filter system, see the Bluevua RO100ROPOT.

Graham Faulknor and Isaac Laredo