AQUASURE Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System vs Puri 7 | Reverse Osmosis System – Under Sink Drinking Water Filter Yes (+$53): which is safer?

These two grade almost identically. Pick on price and preference; neither has a PFAS edge.

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

Aqua Guard

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

PFAS grade

A 100/100

Overall grade

C 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

Why this gradeBuy
Puri 7 | Reverse Osmosis System – Under Sink Drinking Water Filter Yes (+$53)

PureLiving

Puri 7 | Reverse Osmosis System – Under Sink Drinking Water Filter Yes (+$53)

PFAS grade

A 100/100

Overall grade

C 78/100

Verdict

Buy with care

Hazard flags

⚑ 4

Material

RO membrane, carbon filter, stainless steel/plastic housing

Confidence

72%

PossibleBacterial growth in storage tank

PossibleCarbon filter saturation and bypass

PossibleMembrane seal degradation

Why this gradeBuy

Both products run through the same public rubric: 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