
Express Water Alkaline RO
Score: 80/100
APEC RO-PH90
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 Express Water ROALK is a 10-stage reverse osmosis system that combines high-capacity filtration with alkaline remineralization to produce high-quality drinking water. Its main limitations are a very slow flow rate and a larger physical footprint that requires careful cabinet space planning. It is best suited for families seeking comprehensive contaminant removal and mineral enhancement with a DIY installation approach.
| Attribute | ![]() | ![]() |
|---|---|---|
0.035 gallons per minute | 0.063 gallons per minutebest | |
6 months | 12 monthsbest | |
10best | 6 | |
100 gallonsbest | — | |
1 years | 2 yearsbest | |
| ↓ lower better | 17 inchesbest | 18 inches |
| ↓ lower better | 5 inchesbest | 7 inches |
| ↓ lower better | 15 inchesbest | 15 inchesbest |
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(2) | ||
Height (inches) | 17.0 inches | 18.0 inches |
Width (inches) | 5.0 inches | 7.0 inches |
Performance & Filtration(6) | ||
Certifications | NSF 58 | WQA |
Contaminants Removed | Lead, Chlorine, Fluoride, Arsenic | 99% |
Flow Rate (gallons per minute) | 0.035 gallons per minute | 0.0625 gallons per minute |
Filter Life (months) | 6 months | 12 months |
Filtration Stages | 10 | 6 |
Filter Capacity (gallons) | 100 gallons | null gallons |
Installation & Compatibility(1) | ||
Operating Pressure (psi) | 40-80 psi | 100 psi |

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

Professional assessment highlights the Express Water system as a certified, comprehensive solution for residential drinking water. The NSF 58 certification is emphasized as a key indicator of quality and reliability. The brand positions the product as a complete, DIY-friendly solution that balances high filtration effectiveness with user accessibility, avoiding the complexity of UV or elite filtration models while still offering robust contaminant removal and mineralization.
The product is marketed as a practical solution for families and well water users, with the 4-gallon tank specifically noted as addressing the slow flow rate by allowing water accumulation. Users are encouraged to self-install, with the system designed for straightforward setup. The automatic filling feature is highlighted as a convenience for daily use, making it suitable for general household applications without manual activation.

“strips out over 1,000 impurities”

“keeps up with family needs effortlessly”




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.