A bright and airy kitchen with wooden countertops, shelves, and various kitchen utensils and plants, with a large window overlooking a lush outdoor area.
Under-sink water filter systems

Spring water quality straight from your tap

You turn on the tap and out flows water that tastes as fresh as if it came from a mountain spring. Installed out of sight under the sink, with no hassle in your daily life — thanks to MAUNAWAI’s tried-and-tested Pi technology.

Pi technology since 1996
Filters and regenerates
Made in the EU
No chemicals, no electricity

Two systems, one goal: the best water

All MAUNAWAI under-sink systems are based on our Pi technology and deliver water of spring-water quality. Which one is best for you depends on the space you have available and your requirements.

Kompakt

PiTec 2-in-1

Compact and powerful

The full range of MAUNAWAI technology in a single module. Minimal space requirements, maximum water quality. Flow rate: 8 L/min All in one module Minimal space requirements Perfect for small kitchens Consistent water quality

  • Flow rate: 8 L/min
  • All in one module
  • Minimal space requirements
  • Perfect for small kitchens
  • Top-quality water
Leistungsstark

PiTec Professional

The modular system

Modular design with separate filter units. Maximum flexibility for kitchens, offices, hotels and the catering industry.

  • Flow rate: 10 L/min
  • Modular design
  • Separate filter units
  • Ideal for offices and the hospitality industry
  • Top-quality water

What happens to your water?

Our under-sink systems work just like nature: just as spring water makes its way through layers of rock, your tap water passes through several stages of filtration.

1

Pre-filtration

The pre-filter removes coarse particles such as sand, rust and sediment. This protects the subsequent filter stages.
2

Intensive filtration

Chlorine, pesticides, hormones, microplastics, PFAS and numerous other contaminants are bound — whilst valuable minerals are retained.
3

Chemical-free limescale protection

Using modern seed crystallisation, limescale is altered so that it no longer builds up. No chemicals, no salts.
4

Pi Technology: Regeneration

21 different types of mineral ceramics revitalise your water — much like in nature, when spring water flows through layers of rock.

Why an under-sink water filter is worth it for you

Six good reasons to enjoy spring-water quality straight from your tap.

Invisible and space-saving

The entire filter system disappears under your sink. The worktop remains completely clear — all you can see is your tap.

Spring water quality at the touch of a button

Just turn on the tap. No waiting, no refilling. Fresh, purified water — for drinking, cooking, and making tea and coffee.

Valuable minerals are preserved

Unlike reverse osmosis systems, MAUNAWAI doesn’t remove everything. We filter out the harmful substances and preserve the beneficial ones — just as nature has shown us how to do.

Sustainable and resource-efficient

Long-lasting filter cartridges, no electricity, no chemicals. And you don’t have to lug around water bottles.

A taste you can really savour

Tea unfolds its full flavour, coffee becomes smoother, and plain water becomes a delight. You can taste the difference straight away.

Perfect for rented flats

The installation leaves no trace. When you move house, you can simply take your system with you — without leaving a trace.

What sets our Pi technology apart

Most water filters remove contaminants — and that’s where it ends. MAUNAWAI goes further: our Pi technology doesn’t just filter; it regenerates.

Remove pollutants
activated carbon filter
In part
Reverse osmosis systems
MAUNAWAI
Preserve minerals
activated carbon filter
Reverse osmosis systems
MAUNAWAI
Water reclamation
activated carbon filter
Reverse osmosis systems
MAUNAWAI
Without electricity
activated carbon filter
Reverse osmosis systems
MAUNAWAI
Without wastewater
activated carbon filter
Reverse osmosis systems
MAUNAWAI

Tested, tried and proven

99.2%

Reduction of heavy metals

Since 1996

PI technology in Europe

12 months

Independent long-term test

Made in the EU

Development & Production

Research shows that MAUNAWAI filter systems not only reliably remove pollutants, but also improve the water’s biophysical properties.

Dr Walter Medinger — IIREC Institute

Your spring water in just a few steps

You don’t need a plumber or any special tools. The installation is designed so that you can do it yourself in just a few minutes.

1
Prepare the water connection — Open the angle valve under the sink and connect the flexible hose.
2
Fit the filter system — Attach the unit to the wall beneath the base units or place it on the floor.
3
Install a tap — Optional: Separate filtered water tap for the worktop.
4
Rinse and enjoy — Leave it to run for five minutes – and you're done.
Filter replacement: Every six to
twelve months, depending on water consumption. Simply replace the cartridge. No tools required; takes less than a minute.
The image appears to be a technical diagram or schematic, depicting the dimensions and specifications of a mechanical or engineering component. The diagram includes measurements and labels indicating the size and configuration of the object.
"When my brother Mathias suffered from severe atopic dermatitis as a child, our mother Maria embarked on a quest that changed all our lives. What she discovered was Pi technology — and the conviction that good water should not be a luxury, but a basic necessity. That is what we still stand for today."
DK

Daniel Knoch

Founder & CEO, MAUNAWAI

MAUNAWAI is a family-run business with roots dating back to 1996. It was then that Maria Knoch first brought Japanese Pi technology to Europe. Today, MAUNAWAI develops and manufactures all its filter systems within the EU, upholding the same standards as on day one.

Frequently Asked Questions (FAQ)

How often does the filter need to be changed? 

Every six to twelve months, depending on usage and water quality.

Is installation complicated? 

No – our filter systems are designed for easy DIY installation. Of course, a plumber can help if you prefer.

Does the filter system remove limescale from the water? 

Our filters optimise the water structure, significantly reducing limescale deposits. However, only water softeners can provide completely limescale-free water.

How does an under-sink system differ from tabletop filters? 

Under-sink systems filter the water directly at the tap, offer higher filtration performance and require less frequent filter changes than tabletop filters. They are particularly convenient for everyday use because you simply turn on the tap – that’s it.

Can I use the under-sink system in a rented flat?

Yes, without any problems. Installation leaves no residue. When you move house, you simply take the filter system with you to your new home.

Order using your existing account

New customer? Start here:
To register

Loading...

Loading...