Autarkic toilets
for your business

Toilets are a basic requirement for every restaurant. Whether it’s a beer garden, a farm winery or a restaurant by the lake, we all need a quiet place to go after a few drinks. However, our excursion destinations are often in the countryside and a sewer connection is not financially feasible. We have the ideal solution for you.

GOLDGRUBE® for business

The GOLDGRUBE® made of concrete can be integrated into buildings. In the case of a new building, integration should be considered from the very beginning. We will be happy to support you in finding your solution. Integration into existing buildings may also be possible, although this is of course somewhat more complex. Some important parameters can be found in the GOLDGRUBE® table below and  data sheets. They are in German only. 

Urine and faeces are collected separately without water or other additives. This means that high usage figures are possible with small collection volumes.

Auf der Skizze ist eine geschlossene GOLDGRUBE zu erkennen. Auf diesem Behälter ist eine Entnahmeöffnung sowie ein Toilettenstuhl (TTC MINERAL) zu erkennen.
  • High static load-bearing capacity, can be installed under or in building floor slabs
  • Depending on location, low structural effort
  • Approvable (regulated building product), even in protection zones
  • Three sizes (small, medium, large)
  • For up to 9,000 uses (depending on size)
  • Two toilet seats per GOLDGRUBE® also possible
  • Approx. one emptying per year
  • Low disposal volumes per emptying (max. 3 m³)
  • Discharge opening outside the building
  • Emptying takes place via a vacuum vehicle
  • No waste water produced by the toilet
  • Remaining grey water, e.g. from showers, can be treated in a small constructed wetland
  • User-friendly
  • No flushing, litter or chemicals
  • Hygienic
  • No toilet odors thanks to ventilation

Construction types of GOLDGRUBE®

There are various installation options. We provide you with these under data sheets. (German only) 


Auf der Skizze ist eine einzelne Toilette in einem eigenen Raum abgebildet. Unter dem Toilettenstuhl ist eine Goldgrube. Eine Entnahmeöffnung ist im Raum.
Single toilet room
Auf der Skizze sind zwei Räume mit je einer einzelnen Toilette abgebildet. Unter den Toilettenstühlen ist eine Goldgrube für beide. Eine Entnahmeöffnung ist zwischen den beiden Räumen.
Toilet facility with two rooms
Auf der Skizze ist eine einzelne Toilette in einem eigenen Raum abgebildet. Unter dem Toilettenstuhl ist eine Goldgrube. Eine Entnahmeöffnung ist außerhalb des Raumes im Freien.
Single toilet room integrated into a building

Overview: GOLDGRUBE® versions

The following table shows the different versions of the GOLDGRUBE®. All versions comply with the DIN 30762 standard. Some of them can be used in both private and public areas, but not all of them are suitable everywhere. The usage specifications are estimated values from experts. We will be happy to help you make the right choice. 


The concrete versions can all be integrated into a house and then have a round lid instead of a base plate. With a base plate, they are a “stand-alone solution”. The base plates or cover plates can have three different surface structures: concrete-rough, partially concreted or finished floor.


The data sheets provide further details on the different versions of the GOLDGRUBE®.

Main container
installation depth (total)max. wall thickness (integration in building)Foundation plate
Foundation plate depthdeliverable housestatic loadable
Smallpublic / private
2,80021.00 m³1.30 m1.70 m20 cm1.50 m1.50 mLÄRCHEja
Mediumpublic / private
4,80031.75 m³1.50 m1.95 m50 cm1.70 m1.70 mLÄRCHE / PANEELja
Largepublic / private
9,00063.25 m³1.80 m2.25 m80 cm ⁴1.90 m1.90 mLÄRCHE / PANEELja
Accessiable³public / private
9,00063.25 m³1.80 m2.25 m80 cm ⁴ 2.30 m
(2.40 m)⁵
2.35 m
(2.45 m)⁵
Facilities 1public
9,000n.a.3.25 m³1.80 m2.25 mn.a.2.90 m1.90 mLÄRCHE / PANEELja
Facilities 2public
9,000n.a.3.25 m³1.80 m2.25 mn.a.2.90 m2.40 mLÄRCHE / PANEELja

¹ number of uses with average quantities of feces and urine per use.

² private building, number of occupants at one annual emptying

³ Movement areas according to DIN 18040-1

⁵ For self-build toilet house with wall thickness >6 cm

⁴ If more than one commode chair is connected, the wall thickness varies:

  • two toilet chairs on one floor: 20 cm
  • two toilet chairs on two floors: 70 cm

Self-sufficient toilet for the kindergarten

Nature and forest kindergartens also need a toilet solution. Due to their distance from the nearest village, a self-sufficient toilet is necessary.

Together with LivingCircles, we were able to equip two kindergartens in the Swabian Alb with our system in 2023. 

Autarkic toilet at the grill hut

Excursion destinations in the mountains, whether with or without wine, often have the problem that a connection to the sewage system is not possible or involves very high investment costs.

We were able to equip this barbecue hut in the Upper Rhine Graben with one of our toilet facilities in 2019. This was a low-investment solution for the municipality. For the tenants of the hut celebrating, it was a pleasant way to make things easier.

Self-sufficient toilet
at the climbing park

Outdoor sports are in vogue. Whether bouldering, climbing or hiking, we enjoy spending time in nature. However, many places lack the appropriate facilities to provide the necessary relief.

The climbing park in Rothenburg ob der Tauber chose us in 2011. Since then, five people have been able to go to the toilet there at the same time.