PiPrime K8

Gravity filter


from 429.– including VAT &

Spring water quality. Even with hard water

The PiPrime K8 Gravity Filter is specially designed for regions with hard tap water. It significantly reduces limescale, thoroughly filters out contaminants, and revitalizes your water with 21 natural mineral ceramics. No electricity, no chemicals. Comes in a hand-blown glass container.

  • 8-liter capacity: ideal for families and offices
  • Removes 99.5% of contaminants, including PFAS, pesticides, and hormones
  • Filter modules included for a full year
A blue glass container with an intricate flower of life pattern etched into its surface, set against a blurred, warm-toned background.
A blue glass bowl with a flower of life pattern visible in the center against a blurred background.

Die Blume des Lebens — ein kraftvolles Symbol

Die Blume des Lebens ist eines der ältesten geometrischen Muster der Menschheitsgeschichte. Sie findet sich in Tempeln, Kirchen und Bauwerken zahlreicher Kulturen: von Ägypten über Indien bis Europa. Ihr gleichmässiges, harmonisches Muster aus 19 überlappenden Kreisen fasziniert Menschen seit Jahrtausenden.
Beim PiPrime wird die Blume des Lebens (19 cm Durchmesser) von Hand auf den Boden des mundgeblasenen Glasbehälters graviert. So wird jedes Stück noch ein wenig persönlicher — und zu einem echten Blickfang in Ihrer Küche.

with engraving: + €30.–

Suitable replacement filters:

PI®PRIME K8 Refresh Kit (Flat)
€130.–
PI®PRIME K8 Refresh Package DOM
€130.–
High-quality schungite stones  20g
€24.–

Three litres per person, every day. How much of that is actually clean?

A family of four drinks, cooks and uses around twelve litres of water every day. That adds up to over 4,000 litres a year, all from the tap. And this is where it becomes relevant: even well-regulated tap water can contain residues that no water treatment plant can remove completely. PFAS, traces of medicines, pesticides and hormones pass through the treatment process in concentrations that, whilst legal, are not acceptable to everyone.
In areas with hard water, there is another issue to consider: limescale deposits alter the taste, damage appliances and undermine confidence in water quality. If you want consistently clean, soft water for your family, you need a system that works reliably all day long.
The PiPrime K8 was designed precisely for this purpose: a 12-litre capacity, a full year’s worth of filtration, and water inspired by nature.
A family of four is gathered in a cozy kitchen, enjoying a meal together with a water dispenser prominently placed on the counter.

PiPrime: The 5-stage filtration process

Each of the five stages fulfils a specific function. Together, they produce water that is not only free from pollutants but also has a revitalised, living structure, comparable to natural spring water. And it works without electricity, without chemicals, and without a water connection.

Stufe 1

Ceramic filter. The first line of defence.

The ceramic filter is the first stage of the process. It is the preliminary stage through which your tap water passes before the actual purification process begins.

With its extremely fine pores, the ceramic filter physically filters out anything that doesn’t belong in your drinking water: particles, scale and other residues from the water pipes.

MAUNAWAI mat on a blue background with white tiles
Stufe 2

Lime filtration. Reduces lime and heavy metals.

In the second stage, the water passes through the limescale filter pad. Here, specific problematic substances are removed from the water, including excess limescale and heavy metals.

It is particularly important to note that heavy metals such as lead or copper can enter the drinking water via old domestic plumbing. The limescale filter pad reliably reduces these contaminants.

The PiPrime K8 is fitted with limescale filter pads that are specially optimised for hard water (from approx. 14 °dH) and significantly reduce limescale.

MAUNAWAI K8 filter cartridge; the upper stage is visually highlighted
Stufe 3

Activated carbon. The heart of the filtration process.

The multi-layer filter cartridge containing high-performance activated carbon is at the heart of the MAUNAWAI system. It traps organic pollutants that could not be removed in the previous stages.

A key advantage: the flow rate in the MAUNAWAI is deliberately slower than in many other systems. This significantly increases the contact time between the water and the activated carbon, thereby substantially improving the filter’s performance. The material: activated carbon made from coconut shells

MAUNAWAI K8 filter cartridge; the middle stage is visually highlighted
Stufe 4

Mineral ceramics. Just like in nature.

It is at this stage that MAUNAWAI begins to set itself apart from conventional filters: the purified water is revitalised. Zeolites, quartz and coral sand, as well as tourmaline ceramics, restore trace elements and the water’s natural structure, much like in a natural stream.

This process goes beyond simple filtration: the mineral ceramics enrich the water with trace elements and restore its natural cluster structure.

MAUNAWAI uses a proprietary blend of over 20 different highly porous mineral ceramics. The main components are:

MAUNAWAI K8 filter cartridge; the bottom stage is visually highlighted
Stufe 5

Pi technology. Living water.

In the final stage, EM ceramics and calcium complete the regeneration process. The pH stabilises in the slightly alkaline range, and the water’s natural cluster structure is fully restored.

At the end of this process, your water will have properties that make it comparable to natural spring water: a revitalised structure, a balanced mineral content and a taste that you will notice straight away.

Overview: All reduction values at a glance

How were the tests carried out? All the results are from so-called spiked tests. This means that defined quantities of pollutants were deliberately added to the source water prior to filtration. This allows for an exact measurement of the extent to which each substance is reduced by the filtration process. This method is standard scientific practice because normal tap water often contains too low a concentration of pollutants to reliably determine the actual filtration performance. 
The results therefore show how the PiPrime performs under load, not just under ideal conditions.
Sediments, bacteria
Before
available
Later
removed
reduction
mechanical
Limescale (water hardness)
Before
hard
Later
medium-soft
reduction
60–70%
nitrate
Before
100 mg/l
Later
29 mg/l
reduction
71%
Lead
Before
5–96 µg/l
Later
< 5 µg/l
reduction
95%
Mercury
Before
1 µg/l
Later
< 0.1 µg/l
reduction
99%
Chlorine (total)
Before
0.75 mg/l
Later
< 0.1 mg/l
reduction
100%
Trihalomethanes
Before
91.8 µg/l
Later
0.7 µg/l
reduction
99.2%
Total organic carbon (TOC)
Before
10.1 mg/l
Later
1.2 mg/l
reduction
88%
Pesticides (23 tested)
Before
verifiable
Later
not detectable
reduction
100%
PFAS (10 tested)
Before
verifiable
Later
not detectable
reduction
> 99.99%
medicine residues
Before
verifiable
Later
not detectable
reduction
100%
pH level
Before
7.5–8.1
Later
7.8–8.2
reduction
slightly alkaline
redox potential
Before
(not measured)
Later
227–252 mV
reduction
(laboratory result)
coherence frequency
Before
not measurable
Later
22.5 Hz
reduction
renewable
At the same time, valuable minerals are preserved. The water is not merely filtered, but regenerated: it regains its natural, vibrant structure.
A glass filled with ice cubes and a holographic display of interconnected lines and points, set against a blurred, dimly lit background.

Eternity chemicals, and why long-term protection matters

PFAS enter the groundwater via industry, agriculture and household products, and remain there. Your body breaks them down only extremely slowly. That is why it is not enough to test for contaminants just once: what matters is that a filtration system provides reliable protection over a period of months. This is precisely what was demonstrated in an independent 12-month long-term study of the PiPrime.

Laborergebnis — Potsdamer Wasser- und Umweltlabor

None of the ten PFAS substances tested were detectable after filtration.

The accredited laboratory (DAkkS) tested for PFOA, PFOS, PFHxS, PFNA and six other compounds. Reduction rates exceeded 99.99% in each case. For a gravity-fed system such as the PiPrime, which processes several litres a day, this level of consistency is crucial. Not just when new, but throughout its entire service life.

The image is an informational diagram explaining the process of water purification, with details on the before and after stages of the treatment.

Six good reasons to choose the PiPrime K8

Proven to be clean

99.5% reduction in contaminants. Confirmed in an independent 12-month long-term study. The PiPrime reliably removes heavy metals, pesticides, PFAS, hormones, pharmaceutical residues and microplastics from your water.

Living water instead of dead filtrate

Unlike reverse osmosis systems, the PiPrime does not remove everything. Minerals are retained, and the natural structure of the water is restored using PI technology with 21 mineral ceramics. The result: water that your body can utilise to the full.

Self-sufficient: no electricity, no mains water supply

Simply place the PiPrime wherever you need it. No installation, no technician, no hassle. Ideal for the kitchen, office, surgery or waiting room.

Noticeably reduced limescale (K8)

No more white limescale on pots, taps or in the kettle. The K8 uses heterogeneous catalysis, a natural process that involves no chemicals. The minerals are preserved in the process.

Long-lasting filter modules

One filter set lasts a whole year. Ceramic filter (12 months), cartridge (8–12 months), limescale pads (every 4–8 weeks). All are easy to replace without the need for tools.

Sustainable and plastic-free

No more plastic bottles. Hand-blown glass bottles instead of plastic. Manufactured in the EU, using natural filter media. Around 12 cents per litre for spring-quality water.

How does the PiPrime compare?

An honest comparison to help you make the right decision.

Reduction of pollutants
PiPrime K8
99.5% (laboratory tested)
Standard filter
50–80%
Reverse osmosis system
95–99%
Preserve minerals
PiPrime K8
Yes
Standard filter
In part
Reverse osmosis system
Demineralised
PFAS removal
PiPrime K8
> 99.99%
Standard filter
No
Reverse osmosis system
Yes
Regeneration (Pi technology)
PiPrime K8
21 ceramics
Standard filter
No
Reverse osmosis system
No
Limescale reduction
PiPrime K8
Heterogeneous catalysis
Standard filter
No / low
Reverse osmosis system
Yes, but no minerals
Electricity
PiPrime K8
None
Standard filter
None
Reverse osmosis system
Yes, permanently
water wastage
PiPrime K8
None
Standard filter
None
Reverse osmosis system
3–5 litres per 1 litre of filtrate
Capacity
PiPrime K8
12 litres
Standard filter
1–3 litres
Reverse osmosis system
Varies
Annual filter costs
PiPrime K8
approx. €130
Standard filter
€40–80
Reverse osmosis system
€150–300 + electricity
For hard water

Say goodbye to limescale stains! Without losing any minerals.

Hard water leads to limescale build-up on pots, taps and in kettles. Many filters remove limescale, but in doing so they also remove valuable minerals such as calcium and magnesium. The PiPrime K8 takes a different approach.
The K8’s limescale filter pads use heterogeneous catalysis: a principle inspired by mussels and corals. Tiny seed crystals form and disappear, preventing limescale from settling on surfaces. The valuable minerals are retained in their entirety.
The result: soft, great-tasting water without limescale marks, yet still rich in minerals.
A noticeable reduction in limescale
Minerals are preserved
No more limescale marks
Natural principle
craftsmanship

Every glass container is unique

The PiPrime’s storage jar is hand-blown by experienced glassblowers in the Czech Republic. Each piece is crafted by hand, and each one is slightly different. This is not an industrial mass-produced item, but genuine craftsmanship that you can see and feel.
The subtle shade of blue isn’t just attractive; it serves a purpose: it protects your filtered water from exposure to light, thereby preserving its freshness.
Available as an option with an engraving of the ‘Flower of Life’ on the base of the container. A symbol of harmony and life energy.
A blue glass bowl with a flower of life pattern visible in the center against a blurred background.

Which PiPrime is right for your water?

The PiPrime is available in two versions, depending on the hardness of your tap water. The difference lies in the filter modules, not in the glass container.

Suitable for
PiPrime K8
Hard water (from approx. 14 °dH)
PiPrime K2
Soft to medium-hard water
Lime filtration
PiPrime K8
Noticeably reduces limescale
PiPrime K2
Not necessary
Contaminant filtration
PiPrime K8
In full
PiPrime K2
In full
Pi technology
PiPrime K8
21 Mineral ceramics
PiPrime K2
21 Mineral ceramics
glass container
PiPrime K8
Hand-blown glass
PiPrime K2
Hand-blown glass
Filter modules for
PiPrime K8
1 year included
PiPrime K2
1 year included
Price
PiPrime K8
From €429.00
PiPrime K2
From €429.00
With engraving
PiPrime K8
€459.00
PiPrime K2
€459.00
Tip: Not sure how hard your water is? Ask your water supplier or get in touch with us. We’ll be happy to help you choose.

Tested for twelve months. No loss of performance

Many filters are only tested when brand new. The PiPrime was tested under real-world conditions for a whole year, and the results speak for themselves.

Throughout the entire twelve-month test period, the MAUNAWAI filter system demonstrated consistently high removal efficiency for heavy metals, pesticides and other pollutants — without any measurable degradation of the filter media.

IIREC — Institute for Resonance Phenomena, Graz
This means that even after months of daily use, the PiPrime filters just as reliably as it did on the first day. We’d be happy to share the full study with you.

Ready for soft water of spring-water quality?

Whether for your family, your practice or your office: the PiPrime K8 delivers fresh, revitalising water every day, free from limescale. With absolutely no effort required.

Technical specifications

Capacity
Inlet tank: 4 liters, outlet tank: 8 liters
Material
Upper tank: SAN plastic, dispensing container: hand-blown glass
Weight (empty)
6.90 kg
Dimensions (H x W x D)
50 x 30 x 30 cm
Dishwasher-safe
No
Included in the scope of delivery
  • 1x PiPrime Filter Hanger
  • 1x PiPrime Glass Jar with the Flower of Life
  • 1x PiPrime Stainless Steel Faucet
  • 1x PiPrime Top Tank
  • 1x PiPrime Lid
  • 1x PiPrime Stand
  • 1x PI®PRIME K8 Filter Cartridge
  • 1x Flat Ceramic Filter
  • 1x Oxosanum Cleaning Tablet
  • 1x Pre-filter Pad, 6-Pack

Product Safety & Compliance

Manufacturer's marking

Brand: MAUNAWAI

MAUNAWAI GmbH, Adolf-Damaschke-Str. 69-70, 14542 Werder / Germany

info@maunawai.com

+49 3327 570880

Frequently Asked Questions

The K8's calcium filter pads use heterogeneous catalysis, a principle inspired by mussels and corals. This process creates tiny "seed crystals" that bind to and release dissolved calcium. The result: calcium no longer deposits on surfaces, but the valuable minerals calcium and magnesium remain in your water.

The ceramic filter can be easily cleaned with a copper cloth to keep the pores open. Rinse the glass container occasionally with clean water or a vinegar solution. Optionally, you can naturally disinfect it using an Oxosanum tablet. Important: Do not place it in direct sunlight to prevent algae growth. In that case, use the PiPrime protective cover.

Yes! The PiPrime requires neither electricity nor a water connection. This makes it ideal for use in the office, in a waiting room, while camping, or anywhere you have access to tap water. The PiPrime also reliably filters lake and river water!

The filter modules are included in the initial package for the first year. Starting in the second year, the annual filters cost approximately EUR 130.00 (CHF 150.00). Based on an average consumption of three liters per day, your cost is about 12 cents per liter of spring-quality water. By comparison, high-quality mineral water costs between 50 cents and 1.50 per liter.

The ceramic filter lasts about 12 months, the Pi-Prime filter cartridge lasts 8–12 months, and the pre-filter pads are replaced every 4–8 weeks. A complete filter set for the first year is included in the package. Replacement is easy and requires no tools.

Reverse osmosis systems remove everything from the water, including valuable minerals. The result is “empty” water that your body has a hard time utilizing. The PiPrime works differently: It filters out contaminants while retaining natural minerals and revitalizes the water using PI technology. This gives you spring-water-quality water: vibrant, mineral-rich, and delicious. No electricity, no wastewater, no waste.

Yes! In a test conducted by the accredited Potsdam Water and Environment Laboratory, over 99.99% of all ten PFAS substances tested were removed; they were no longer detectable after filtration. This includes the four most critical compounds: PFOA, PFOS, PFHxS, and PFNA.

The PiPrime K8 / K2 provides comprehensive filtration: chlorine, heavy metals (lead, copper, mercury), pesticides, herbicides, pharmaceutical residues, hormones, PFAS (forever chemicals), microplastics, bacteria, sediment, and rust particles. It also significantly reduces limescale. At the same time, valuable minerals and trace elements are retained in the water.

The PiPrime K8 is the right choice if your tap water is hard—that is, 14 °dH (German hardness) or higher. This is the case in many regions of Germany, Austria, and Switzerland. The K8 significantly reduces limescale, preventing white deposits from forming on pots and faucets. Both models filter out contaminants equally effectively; the only difference lies in limescale filtration.

The PiPrime harnesses the natural force of gravity: You fill the upper container (4 liters) with tap water, and it flows through the filter modules into the lower glass container (8 liters). Along the way, it passes through a ceramic filter—which traps bacteria and particles—as well as the PI filter media, which contains 21 different types of mineral ceramics. With the K8, the calcium content is also noticeably reduced. No electricity, no chemicals, no water connection required.

Both are high-performance gravity-fed water filtration systems. The difference lies in your water hardness. The K2 is designed for regions with soft water, while the K8 is designed for hard water. The K8 cartridge features additional chemical-free limescale protection technology: Special ceramic granules prevent limescale buildup without stripping minerals from your water. Nature instead of chemicals—even when it comes to limescale protection.

Excellent. Our Kini reduces pesticides and herbicides to less than 5% of their original levels. Arsenic and copper are reduced to 12%, and uranium to 25%. With our larger systems, such as PiPrime or PiTec, the results are even better because they use more filter media. For you, this means your water is as clean as you want it to be.

Goes perfectly with it

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PI®PRIME K8 Filter Cartridge

PI®PRIME K8 Filter Cartridge

€63.–
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PI®PRIME K8 Refresh Kit (Flat)

PI®PRIME K8 Refresh Kit (Flat)

€130.–
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PI®PRIME K8 Refresh Package DOM

PI®PRIME K8 Refresh Package DOM

€130.–
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PiPrime Protective Case (Sand)

PiPrime Protective Case (Sand)

€60.–
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PiPrime K8

PiPrime K8

€429.–

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PiPrime K8

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