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Kind 6-Stage Reverse Osmosis Drinking Water System

Kind 6-Stage Reverse Osmosis Drinking Water System

Model Number: PRO-RO

Bring the ultimate in water purification to your home with the Kind Water's NSF® certified 6-Stage Reverse Osmosis Drinking Water System. This compact under-sink advanced filtration system uses a 6-step process to remove up to 99% of dangerous contaminants, including heavy metals, chemicals, and total dissolved solids, providing you and your family with pure, great-tasting drinking water.

Faucet Options
120 Day Satisfaction Guaranteed
Same Day Shipping
Lifetime Warranty
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How It Works: 6 Stages of Protection

6 Stages of Protection

This 6-Stage Reverse Osmosis System uses a sediment filter, multiple carbon filters, and a high-efficiency RO membrane to remove impurities, polish the water, and finish with a remineralization stage that restores healthy, great-tasting minerals — all built into two easily replaceable filter cartridges for simple maintenance.

14.61
Gallons per day (GPD)
99%
Reduction of contaminants in water
3
Gallons of storage tank capacity
Stage 1

Sediment Filter

Sediment pre filter to remove dirt, sand, & suspended solids.

Stage 2

Carbon Filter

Granular activated carbon (GAC) to reduce chlorine taste & odor.

Stage 3-4

Impurity Filters

High-efficiency 50 GPD membrane that reduces salts, heavy metals, and bacteria.

Granular activated carbon (GAC) to polish the water.

Stage 5-6

Remineralization Filters

Inline charcoal and calcite remineralization filters enhance taste and restore beneficial minerals like calcium and magnesium.

Water Storage Tank

The built in storage tank keeps a reserve of purified water ready on demand, so you always have clean, great tasting water available instantly.

3 gallon storage tank capacity.

Durable material with zero maintenance.

Made in USA.

Why it matters:

It ensures you always have purified water ready to use, eliminating wait times while maintaining steady flow and pressure.

Stage 1

Sediment Filter

The first line of defense—this sediment filter keeps your water crystal clear and your system running efficiently by capturing dirt and debris before they cause buildup.

Removes dirt, sand, and suspended solids.

The sediment pre-filter is integrated into the 4-stage cartridge for complete protection.

Replace every 12 months for best performance.

Made in the USA.

Why it matters:

Filters dirt, sand, and suspended solids, providing cleaner water as it moves to the carbon filtration stage.

Stage 2

Granular Activated Carbon

Provide great tasting water by reducing chlorine taste & odor.

Improves water taste and provides better than bottled quality water.

Targets chlorine, chloramine, VOCs, pesticides, herbicides and other contaminants.
See full 155+ contaminant list

The granular activated carbon is integrated into the 4-stage cartridge for complete protection.

Replace every 12 months for best performance.

Made in the USA.

Why it matters:

Enjoy crisp, clean water with fewer odors and better taste — straight from every tap. Better-than-bottled-water quality.

Stage 3-4

Impurity Filters

Integrates a high-efficiency 50 GPD membrane and granular activated carbon to reduce salts, heavy metals, and bacteria while polishing the water for improved taste and clarity.

High-efficiency 50 GPD membrane that reduces salts, heavy metals, and bacteria.

Granular activated carbon (GAC) to polish the water.

The RO membrane and GAC filters are integrated into the 4-stage cartridge for complete protection.

Replace every 12 months for best performance.

Made in the USA.

Why it matters:

These advanced stages reduce harmful contaminants and unwanted tastes, you get water that’s cleaner, safer, and refreshingly pure. Together, they deliver the perfect balance of protection and great-tasting quality in every glass.

Stage 5-6

Remineralization

The inline 2-stage cartridge combines coconut-shell carbon and calcite remineralization media to enhance taste, restore beneficial minerals like calcium and magnesium, and balance your water’s natural pH for a smoother, fresher flavor.

Inline coconut-shell carbon filter enhances water taste and freshness.

Inline calcite remineralization filter enhances your water’s natural balance by adding back healthy minerals like calcium and magnesium, creating smoother taste.

The coconut shell carbon and calcite remineralization filters are integrated into the inline 2-stage cartridge.

Replace every 6 months for best performance.

Made in the USA.

Why it matters:

Remineralization restores essential minerals removed during reverse osmosis, improving taste and helping maintain a natural, balanced pH.

9.75” W x 13.5” D x 15.5” H
( 24.8 x 34.3 x 39.4 cm), 11 lbs. (5 kg.)

Performance
  • Membrane production: 50 GPD
  • System production: 14.61 GPD
  • TDS rejection: 96.5%
  • Recovery: 26.76%
  • Efficiency Rating: 15.6%
System tested at 50 psig, 750ppm TDS at 77°F.
The percentage of the feed water available as reverse osmosis treated water under normal operating conditions.

Certification
  • NSF/ANSI - 58 (Contaminant reduction)
Feed Water Requirements
  • Pressure: 40-80 psi (275 kPa - 552 kPa)
  • Temp: 40°F – 100°F (4°C – 38°C)
  • TDS: < 2000 mg/L
  • Chlorine: < 1.0 mg/L
  • Turbidity: < 1 NTU SDI < 5
  • SDI: <5
  • pH: 4-8
Plumbing
  • Tank tubing (3/8” white)
  • Drain tubing (3/8” white)
  • Drain tubing (1/4” black)
  • Faucet tubing (3/8” blue)
  • Feed water tubing (1/4” green)

Clear Water Doesn’t Always Mean Clean Water. We Fix That.

Chemicals

Chlorine

Common in municipal water, causes taste and odor issues.

Organics

Glyphosate

A widely used herbicide (Roundup) and a major concern for rural and farming communities.

Chloramine

Used as a disinfectant, harder to remove than chlorine.

Atrazine

One of the most common pesticide contaminants in U.S. drinking water; linked to hormone disruption and reproductive issues.

Benzene

Known carcinogen; frequently in the news after industrial spills or contamination events.

See complete list of 155+ contaminants

System Manual

Kind Water Systems are designed for quick, no-hassle installation. Set it up yourself with basic tools or have your plumber of choice install it quickly.

Installation Manual

Detailed system installation manual with step by step instructions.

Download Manual

Installation Video

Easy to follow guided instructions by our expert team.

Air-Gap Bypass Installation

Easy to follow guided instructions for the air-gap bypass by our expert team.

Replacement Instructions

Maintenance is quick and easy. Simply remove the cover and replace the main cartridge – no complicated plumbing connections, no tools required. The in-line postfilter utilizes easy quick-connect fittings.

Maintenance Instructions

Quick and easy filter replacement instructions

Download Instructions

Kind Water vs. The Other Guys

 
Kind Water
Other Systems
Compact size
Compact design measuring 9.75” W × 13.5” D × 15.5” H fits comfortably under most standard kitchen sinks.
Manufacturing
High quality materials - 120 day guarantee and lifetime warranty
Made in US
Made in China
DIY-Friendly Install:
Designed for simple installation without professional help.
Easy Maintenance:
Minimal upkeep with quick, tool-free filter changes.
Quick and Easy (10 mins DIY)
Requires a plumber
Certified Components:
Built with parts tested and certified for safety and performance.
NSF/ ANSI 58
Chinese Components
Maintains Healthy Minerals:
Restores healthy minerals like calcium and magnesium to create naturally balanced, refreshing water.
Bottled Water Quality:
Better than bottled water from every tap. Fresh, clean, and great-tasting.

What does the Kind 6-Stage Reverse Osmosis Drinking Water System remove from water?

The Kind 6-Stage Reverse Osmosis Drinking Water System removes up to 99% of contaminants including chlorine, lead, fluoride, heavy metals, and dissolved solids, while also improving taste and odor.

Why does remineralization matter?

After purification, remineralization restores essential minerals like calcium and magnesium, helping balance pH and give your water a clean, refreshing taste.

How often should I replace the filters?

Maintenance is simple with the Kind 6-Stage Reverse Osmosis Drinking Water System. Just replace the remineralization filters (Stages 5 & 6) every 6 months and the RO membrane (Stages 1–4) every 12 months. The easy twist-and-replace design lets you change filters in minutes, no tools or plumber needed.

PRO-RO Replacement

Will it improve taste/odor of my water?

Yes, the Kind 6-Stage Reverse Osmosis Drinking Water System effectively removes chlorine, chemicals, and other impurities that cause unpleasant taste and odor, leaving your water clean and refreshing.

What does the storage tank do?

The storage tank keeps purified water ready for use, ensuring instant flow and consistent pressure without waiting for the filtration process.

How much space does it take to install?

Compact design measuring 9.75” W × 13.5” D × 15.5” H fits comfortably under most standard kitchen sinks.

Is installation difficult?

Installation is straightforward with color-coded tubing and quick-connect fittings—most homeowners can complete setup in under an hour with basic tools.

Does it require electricity?

No, the Kind 6-Stage Reverse Osmosis Drinking Water System does not require any electricity.