
iSpring RCC7P-AK
Score: 92/100
APEC RO-PH90
Score: 85/100Rankings

The iSpring RCC7P-AK is a 6-stage under-sink reverse osmosis system designed to remove over 1,000 contaminants while restoring beneficial minerals through an alkaline remineralization filter. It features a built-in electric booster pump that ensures high efficiency and consistent performance in homes with low incoming water pressure (below 45 PSI). It is best suited for households with low water pressure or larger families seeking mineral-balanced drinking water.

The APEC RO-PH90 is a robust 6-stage reverse osmosis system designed to remove over 1,000 impurities while remineralizing water for a natural spring-like taste. Its primary trade-off is a high waste water ratio of 3:1, which is typical for classic RO systems. It is best suited for households seeking high-quality, mineral-enhanced drinking water and are willing to manage maintenance.
| Attribute | ![]() | ![]() |
|---|---|---|
— | 0.063 gallons per minutebest | |
— | 12 monthsbest | |
6best | 6best | |
1 years | 2 yearsbest | |
| ↓ lower better | 18 inchesbest | 18 inchesbest |
| ↓ lower better | 8 inches | 7 inchesbest |
| ↓ lower better | 15 inchesbest | 15 inchesbest |
97.9 percent | 99 percentbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Value & Warranty(1) | ||
Warranty (years) | 1 years | 2 years |
Dimensions & Fit(1) | ||
Width (inches) | 8.0 inches | 7.0 inches |
Performance & Filtration(3) | ||
Certifications | NSF/ANSI 58 | WQA |
Contaminants Removed | PFAS, PFOA, PFOS, Chlorine, Arsenic, THMs, Calcium, Sodium, Sulfur | 99% |
TDS Reduction (percent) | 97.9 percent | 99 percent |
Installation & Compatibility(2) | ||
Installation Type | Under-sink | Under Sink |
Operating Pressure (psi) | Below 45 psi | 100 psi |


Products in the top-left offer the best value (high score, low price).

Professional sources consistently highlight the iSpring RCC7P-AK as a maximum performance option in its category. Reviewers specifically praise the addition of the booster pump and alkaline remineralization as distinguishing features that address common reverse osmosis system shortcomings, such as low flow in low-pressure homes and acidic water production.
Everyday users report noticeable taste improvements after three months of use, describing the water as having a smooth, slightly sweet profile that feels healthier than tap water. Common praise includes reliable daily performance for essential household needs and the booster pump operating nearly inaudibly.

Professional reviewers highlight the APEC RO-PH90 as a robust, professional-grade solution for households seeking high-quality water purification, praising its ability to remove impurities and improve taste.
Everyday users generally express high satisfaction with the taste and clarity of the water, though some report concerns about the volume of waste water generated.
“removes impurities flawlessly, leaving water that is crystal-clear with a crisp, refreshing taste”

“smooth, slightly sweet profile and more natural taste compared to standard RO water”

“barely heard over normal kitchen activity”


