Aqua Otter
All Systems/Reverse Osmosis
Highest Purity Available

99% of
contaminants.
Gone.

Reverse osmosis pushes water through a semi-permeable membrane that blocks lead, arsenic, nitrates, PFAS, and pharmaceuticals. The purest drinking water you can get at home.

What standard filtration misses

Lead. Arsenic. PFAS.
RO removes them all.

NSF/ANSI 58 Certified

Independent third-party tested

of lead removed at the point of use

99%

of arsenic eliminated per NSF certification

99%

of nitrates and nitrites removed

97%

of PFAS per-and polyfluoroalkyl substances removed

95%+

saved per year compared to buying bottled water

$600+

TDS reduction — dissolved solids effectively gone

99%

How It Works

5 stages. 99% removal.

Click any stage to see exactly what it targets and why it matters.

Tap water in
Pure water out

Stage detail

4

Stage 40.0001 micron pore

RO Membrane

The core of the system. Water is forced through a semi-permeable membrane with pores measured in nanometers. 99% of dissolved contaminants — lead, arsenic, PFAS, nitrates — cannot pass through.

What it removes

Lead (99%)
Arsenic (99%)
Nitrates (97%)
PFAS (95%+)
Heavy metals
Pharmaceuticals
The science

How 5-stage reverse osmosis
delivers pure water.

01
01

Pre-filtration removes sediment and chlorine

Water first passes through a sediment filter and two carbon stages that remove particles, chlorine, and chloramines — protecting the delicate RO membrane from damage.

02
02

The RO membrane blocks 99% of contaminants

Water is forced through a semi-permeable membrane with pores measured in nanometers. Lead, arsenic, nitrates, PFAS, heavy metals, and most pharmaceuticals cannot pass through.

03
03

Post-carbon polishing delivers perfect taste

A final carbon stage removes any remaining trace tastes or odors before water flows to your dedicated drinking faucet — cleaner than most bottled water brands.

Our RO systems.

From under-sink drinking water to whole-home RO protection.

Most Popular
5-Stage Reverse Osmosis

5-Stage Reverse Osmosis

Under-sink 5-stage RO system with sediment, carbon, and membrane filtration plus post-carbon polish. The most comprehensive point-of-use drinking water system available.

  • 5-stage filtration process
  • 99% TDS reduction
  • Removes lead, arsenic, PFAS, nitrates
  • Dedicated filtered water faucet included
Great Value
4-Stage Reverse Osmosis

4-Stage Reverse Osmosis

Compact 4-stage under-sink RO system for homes with limited cabinet space. Same membrane technology as the 5-stage, delivering exceptional purity in a smaller footprint.

  • 4-stage compact design
  • Full RO membrane filtration
  • Ideal for smaller under-sink spaces
  • Easy DIY filter replacement
Premium Health
Alkaline Reverse Osmosis

Alkaline Reverse Osmosis

The 5-stage RO system with an added alkaline remineralization stage. Adds back calcium, magnesium, and potassium for pH-balanced, clean mineral taste.

  • Full RO purification
  • Alkaline remineralization stage
  • Balanced pH water
  • Enhanced mineral taste
Total Home Coverage
Whole-Home Reverse Osmosis

Whole-Home Reverse Osmosis

Commercial-grade whole-home RO system that delivers reverse osmosis water to every tap, shower, and appliance. Best for homes with severe contamination concerns.

  • Whole-home RO protection
  • High-flow commercial membrane
  • Every tap, shower, appliance
  • Built-in storage tank
“Our water tastes incredible now — better than bottled. We stopped buying cases of water the week it was installed. The quality is unbelievable for what comes right out of our tap.”

Val Fowler

Google Review — 5-Stage Reverse Osmosis

Test your water.
See what RO removes.

Free in-home water test. We show you exactly what is in your water before recommending a system.

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