APEC Water Systems ROES-PH75 Alkaline 75 GPD Reverse Osmosis System

In this review of the APEC ROES-PH75 Essence Series, the bottom line is simple: this under-sink reverse osmosis system is best for homeowners who want near-complete contaminant removal plus a gentle alkalinity boost for better tasting water. The reviewer found the 6-stage layout and the premium calcium pH cartridge deliver very clean, neutral-to-slightly-alkaline water, while the included extra set of pre-filters adds value and simplifies maintenance. Installation is described as straightforward for a handy DIYer and the system's WQA certification gives confidence in long-term performance.

Key Features

• 6-Stage Filtration: Removes up to 99% of contaminants including chlorine, taste, odor, VOCs and many heavy metals for noticeably cleaner drinking water.
• Alkaline Mineral pH+ Cartridge: Adds premium-grade calcium to enhance alkalinity and improve flavor without over-mineralizing the water.
• High Flow Capacity: Rated 75 GPD to meet the needs of most households while handling feed water up to 2000 ppm TDS when within pressure range.
• WQA Certified: Third-party certification provides reassurance about the system's contaminant removal claims and component quality.
• Value Bundle Pre-Filters: Extra set of stage 1-3 pre-filters included to reduce initial maintenance cost and keep the system running optimally.

Who It's For

This system is ideal for families and individuals who want comprehensive purification for tap or well water and prefer water that is slightly alkaline for taste and mineral benefit. It suits homeowners who have moderate plumbing experience or are comfortable following clear instructions and standard under-sink installation steps.

It is less appropriate for people needing a compact countertop solution, or for those with feed water pressure consistently below 40 psi or above 85 psi. Also, users who need very high daily output beyond 75 GPD or require specialized hard-water treatment should look for a different product.

Pros & Cons

Pros

• Effective multi-stage filtration that targets a broad range of impurities for superior water clarity and taste.
• Alkaline calcium cartridge improves flavor and adds beneficial minerals without overcomplicating maintenance.
• Extra pre-filter set included, lowering the cost and frequency of initial replacements.
• WQA certification and premium components support long-term reliability.

Cons

• Some customers report mixed experiences with leakage, so careful installation and checking fittings is important.
• Requires under-sink space and minimum feed pressure between 40-85 psi, which may not suit all homes.

Specifications

System type	6-stage reverse osmosis with alkaline pH+ cartridge
Rated flow	75 GPD
Contaminant removal	Up to 99% of chlorine, VOCs, fluoride, arsenic, lead and 1000+ impurities
Max TDS	2000 ppm
Feed water pressure	40-85 psi
Warranty/Certification	WQA certified
Included extras	Extra high capacity pre-filter set (stages 1-3)

Our Verdict

The APEC ROES-PH75 is a reliable under-sink reverse osmosis system that pairs strong contaminant removal with a tasteful alkaline finish, making it good value for homeowners who want long-term purity and improved flavor. With WQA certification, premium components and an extra pre-filter bundle, it is especially recommended for households able to meet the pressure and space requirements and willing to follow the clear installation steps.

Frequently Asked Questions

How often should filters be changed?
Pre-filters should be changed every six months for optimal performance; other stages follow the manufacturer's schedule based on usage.

Will this remove fluoride and heavy metals?
Yes, the ROES-PH75 is designed to remove fluoride and many heavy metals as part of its multi-stage filtration.

Is installation difficult for a DIYer?
Most users find the instructions clear and installation manageable if you have basic plumbing skills, but check fittings carefully to avoid leaks.