AquaTru Under Sink Under Sink vs Puri 7 | Reverse Osmosis System – Under Sink Drinking Water Filter Yes (+$53): which is safer?

AquaTru Under Sink Under Sink is our pick: better on PFAS and on the overall hazard picture.

Our pick

AquaTru Under Sink Under Sink

Aqua Guard

AquaTru Under Sink Under Sink

PFAS grade

A 100/100

Overall grade

B 84/100

Verdict

Buy with care

Hazard flags

⚑ 4

Material

Multi-stage filter cartridges (activated carbon, ion exchange resins)

Confidence

72%

PossibleBacterial growth in filter cartridges and housing

PossibleIon-exchange resin leaching (minerals and residual binding agents)

PossibleHousing plastic or elastomer degradation under moisture stress

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