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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryCrafts & TradesDrain cleaningBuchs SgDrainjet AG
Drainjet AG Logo
Verified· 5 sourcesOwner confirmed
Last updatedNovember 6, 2026

Contact

Summary

About the company

DrainJet Robotics AG removes, with robot-controlled high-pressure water jet technology up to 2500 bar, the most stubborn deposits such as lime scale, concrete, root intrusions, liner and steel anchor from sewer lines, pipes and shafts as well as from surfaces – trenchless, without chemicals and under permanent camera surveillance. The offering also includes seepage hole renovation, ventilation cleaning, industrial cleaning and cleaning of pressurized lines. Customers include construction and installations, municipalities, industry and energy as well as properties and private individuals. The company operates nationwide in Switzerland, with branches in Aarau and Widnau and an office in Buchs SG.

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Service area

Offering

Products & services

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Trust Score4.2/5

Drainjet AG

Industry:Drain cleaningWaste disposal
✓ Offered8
Lime jetting
Ultra-high-pressure water removal of lime deposits in the sewer, controlled using robotic technology; gently removes encrustations, without chemicals and without excavation work.
Remove concrete and steel anchors
Removal of hardened concrete, mortar and steel anchors using camera-monitored robotic technology and ultra-high-pressure water; trenchless and without road closures.
Remove liners
Cutting and removing old, defective or leaking pipe liners using ultra-high-pressure water sewer robotic technology; controlled, trenchless and without pipe damage.
Surface stripping
Cleaning and removal of coatings, paints and other materials with ultra-high-pressure water up to 2500 bar; for surface cleaning, pre-treatment and various applications.
Repair weep holes
Cleaning and rehabilitation of clogged weep holes; dissolves lime, gravel and foreign matter, restores the seepage function and can create new weep holes.
Clean ventilation systems
Dry dismantling of concrete inclusions and hard deposits in ventilation systems with milling robots; from DN 70, controlled via camera monitoring.
Industrial cleaning
Cleaning of industrial plants, tanks, containers, heat exchangers, pressure and transport systems as well as machines; project-specific using removal equipment and robotic systems.
Clean pressure lines
Renovation and cleaning of pressure and transport lines; removal of old coatings, rust and dirt, as well as preparation for new coating and corrosion protection.
Expertise

Expert

Eric Wohlwend
Eric Wohlwend
Member of the Board of Directors Delegated

Since its founding in 2016 at Drainjet, initially as managing director, since 2020 a member of the Board of Directors. Specializes in trenchless sewer rehabilitation with robot-controlled hydro-jetting up to 2500 bar.

Qualifications & certifications
Betriebswirtschafter HF2022
Berufsmatura2007
Trust & reputation

ranQ Trust Score of Drainjet AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 100% · As of November 2026

Drainjet AG scores 64.2 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.76.724%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.45.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.50.08%
Drainjet AG scores 83.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.86.512%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.70.07%
Drainjet AG scores 98.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).98.322%
Drainjet AG scores 23.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.37.14%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.08

Drainjet AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 5 customer reviews. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle55
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Common questions

Answers

How can a water jet at 2500 bar clean without damaging the pipe?
The water jet runs almost parallel to the pipe wall and thus acts directly on the deposit rather than on the pipe. In addition, a camera on the canal robot permanently monitors the entire operation.
What deposits can DrainJet remove from sewer lines and pipes?
Scale, hardened concrete and mortar, root intrusions, old linings and pipe coatings, as well as foreign objects such as steel anchors and reinforcing bars – with water pressures up to 2500 bar, trenchless and without chemicals.
From which pipe diameter can DrainJet be used?
Limescale and concrete are removed by DrainJet with high-pressure water in pipes from DN 100, old linings from 70 mm inner diameter. Ventilation ducts are dry-frayed from DN 70. There is no upper limit.
Press

Media

July 11, 2019Media
Baublatt: Drainjet Robotics AG – Grabenlos gegen Beton und Kalk im Rohr
baublatt.ch
August 1, 2017
Kommunalmagazin Nr. 4/2017: Kampf dem Kalk
drainjet.ch
SpektrumBau 2/2019: Effizient und schonend zugleich – mit 2500 bar gegen Beton und Kalk im Rohr
drainjet.ch
Portrait
AQUA Suisse Messe Zürich: Ausstellerprofil DrainJet AG
aqua-suisse-zuerich.ch
Knowledge

Articles about Drainjet AG

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Comparisons

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Contact

Location

Churerstrasse 35
9470 Buchs Sg
Opening hours
Mon
08:00 - 12:00, 13:30 - 17:00
Tue
08:00 - 12:00, 13:30 - 17:00
Wed
08:00 - 12:00, 13:30 - 17:00
Thu
08:00 - 12:00, 13:30 - 17:00
Fri
08:00 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-229.457.025
Founded
2016 · 10 years
Last commercial register change
July 23, 2024
Employees
11 to 20

Active throughout Switzerland

Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology