
APEC RO-PH90
Score: 85/100
iSpring RCC7AK Black
Score: 85/100Rankings

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.

The iSpring RCC7AK-BLK is a 6-stage under-sink reverse osmosis system certified by NSF/ANSI 58 to remove up to 99% of over 1,000 contaminants. It features an alkaline remineralization stage that restores minerals and pH balance, producing bottled-water quality taste without requiring electricity. It is best suited for homeowners with adequate water pressure (40-80 PSI) who want a pumpless, energy-efficient solution.
| Attribute | ![]() | ![]() |
|---|---|---|
0.063 gallons per minutebest | — | |
12 monthsbest | — | |
6best | 6best | |
2 yearsbest | 1 years | |
| ↓ lower better | 18 inchesbest | 19 inches |
| ↓ lower better | 7 inchesbest | 16 inches |
| ↓ lower better | 15 inchesbest | 15.5 inches |
99 percentbest | 97.9 percent |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Value & Warranty(1) | ||
Warranty (years) | 2 years | 1 years |
Dimensions & Fit(3) | ||
Height (inches) | 18.0 inches | 19.0 inches |
Width (inches) | 7.0 inches | 16.0 inches |
Depth (inches) | 15.0 inches | 15.5 inches |
Performance & Filtration(3) | ||
Certifications | WQA | NSF/ANSI 58 |
Contaminants Removed | 99% | Sediment, vinyl chloride, chlorine, fluoride, lead, arsenic, PFAS, asbestos, calcium, sodium |
TDS Reduction (percent) | 99 percent | 97.9 percent |
Installation & Compatibility(2) | ||
Installation Type | Under Sink | Under-sink |
Operating Pressure (psi) | 100 psi | 40-80 psi |


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

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.
“strips out over 1,000 impurities”

“keeps up with family needs effortlessly”


