
Express Water Alkaline RO
Score: 78/100
APEC Essence ROES-PH75
Score: 82/100Rankings

The APEC Water Systems ROES-PH75 Essence Series is a 6-stage under-sink reverse osmosis system rated at 75 gallons per day, designed to produce alkaline mineral-enhanced water by adding high-purity calcium carbonate. It features a solid metal frame for durability, large-capacity block filters for extended life, and an eco-friendly low waste ratio with automatic shut-off. It is ideal for families wanting 99% contaminant removal plus pH boost for taste and health preferences.

The Express Water 10-Stage RO System is a comprehensive under-sink filtration solution with alkaline remineralization and NSF 58 certification. It includes a 4-gallon tank to compensate for its slow flow rate, making it suitable for families. However, it requires adequate cabinet space and sufficient water pressure to operate effectively.
| Attribute | ![]() | ![]() |
|---|---|---|
10 stagesbest | 6 stages | |
100 gallons per daybest | 75 gallons per day | |
— | 99 percentbest | |
4 gallonsbest | 4 gallonsbest | |
7 countbest | — | |
6 monthsbest | — | |
| ↓ lower better | 5 inchesbest | 5.25 inches |
| ↓ lower better | 17 inchesbest | 17.5 inches |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Compliance & Safety(1) | ||
Certifications | NSF 58 | WQA Certified |
Design(2) | ||
System Width (inches) | 5 inches | 5.25 inches |
System Height (inches) | 17 inches | 17.5 inches |
Performance(5) | ||
Filtration Stages (stages) | 10 stages | 6 stages |
Daily Production Rate (gallons per day) | 100 gallons per day | 75 gallons per day |
Wastewater Ratio | Low | |
Contaminants Removed (count) | 7 count | null count |
Feed Water Pressure (PSI) | 40-80 PSI | 40 PSI |
Features(1) | ||
Faucet Type | Chrome | Brushed Nickel |

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, emphasizing the NSF 58 certification.
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.




Search results lack in-depth expert reviews from major testing sites like Wirecutter or Consumer Reports. Product pages emphasize manufacturer guarantees of premium components and 2x contaminant removing capacity. A YouTube installer/review video highlights successful installation and TDS reduction testing, positioning the system as worthwhile for clean water.
Limited direct quotes are available, but Home Depot and Lowe's pages note high engagement with 246 questions and answers. Common inferred praise includes effective TDS reduction and easy DIY installation. Recurring complaints are not detailed, though potential issues from similar RO systems include initial setup plumbing challenges.