Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System vs Premier Series Alkaline Enhancing Reverse Osmosis System: which is safer?

AQUASURE Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System is our pick, better on PFAS and on the overall hazard picture.

Our pick

AQUASURE Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System

Aquasure

Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System

PFAS grade

Excellent 100/100

Overall grade

Excellent 78/100

Verdict

Buy

Hazard flags

⚑ 4

Material

RO membrane, carbon filters, stainless steel housing

Confidence

72%

PossibleBacterial and microbial growth in housing and filters

PossibleActivated carbon filter degradation and dust release

ReportedRO membrane integrity failure and microbial breakthrough

Aquasure

Premier Series Alkaline Enhancing Reverse Osmosis System

PFAS grade

Excellent 85/100

Overall grade

Good 59/100

Verdict

Buy with care

Hazard flags

⚑ 5

Material

Carbon and resin filters, plastic housing

Confidence

72%

PossibleBacterial growth in filter cartridges and storage tank

PossiblePlastic housing and valve leachables

PossibleResin media quality and food-grade certification

Where these two actually differ

  • We flag Bacterial and microbial growth in housing and filters, Activated carbon filter degradation and dust release, RO membrane integrity failure and microbial breakthrough and Tubing and connector leakage or degradation on the Aquasure and not on the Aquasure.
  • We flag Bacterial growth in filter cartridges and storage tank, Plastic housing and valve leachables, Resin media quality and food-grade certification and Inadequate documentation of filter composition on the Aquasure and not on the Aquasure.
  • The Aquasure is RO membrane, carbon filters, stainless steel housing where the Aquasure is Carbon and resin filters, plastic housing, which is most of the difference in these two grades.

Both products run through the same public rubric, which covers materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →

More under-sink ro systems, see the full ranking