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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryReal EstateCleaning companyGrenchenBolliger & Co. AG
Bolliger & Co. AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

Bolliger & Co. AG provides pipe and sewer cleaning, sewer inspection and rehabilitation, and recycling of street sweepings and sludge materials. The company documents sewer conditions with specialized inspection vehicles and processes collected materials into reusable components.

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Presence

Service area

Offering

Products & services

Industry:Cleaning company
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4.0/5

Bolliger & Co. AG

✓ Offered
6
Pipe cleaning
Pipe cleaning work on and in properties to maintain the functionality of drainage systems and to extend their service life.
Sewer and pipe cleaning
Cleaning and flushing of sewer lines and pipelines from the kitchen drain to the wastewater treatment plant, including removal of limescale, gravel, sand and silt deposits.
Sewer inspection
Condition assessment of wastewater sewers using inspection vehicles and complete documentation of wastewater systems.
No-dig sewer rehabilitation
No-dig rehabilitation and repair of wastewater pipelines using inliner systems and robots, carried out together with a partner.
Transport
Transport and legally compliant recovery of liquid waste using company-owned vehicles.
Recycling
Recycling of road sweeping waste, oil separator sludge, road manhole sludge, drilling mud and concrete slurry into reusable material at the sites in Grenchen and Aarberg.
Trust & reputation

ranQ Trust Score of Bolliger & Co. AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 100% · As of November 2026

Bolliger & Co. AG scores 56.4 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.65.024%
  • 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.52.910%
  • 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.35.08%
Bolliger & Co. AG scores 93.9 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.100.012%
  • 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.82.07%
Bolliger & Co. AG scores 88.3 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).88.322%
Bolliger & Co. AG scores 40.0 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 35.80.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Bolliger & Co. AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.3 out of 5 stars from 7 customer reviews. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.3
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle4.37
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

August 25, 2023Media
Bolliger Grenchen für renommierten Preis nominiert
grenchnertagblatt.ch
April 25, 2019Media
Spatenstich für den Neubau aufs Firmenjubiläum hin
grenchnertagblatt.ch

Knowledge

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Location

Niklaus Wengi-Strasse 104
2540 Grenchen

At a glance

Legal form
Corporation
UID
CHE-105.919.224
Founded
1985 · 41 years
Last commercial register change
January 24, 2023
Employees
21 to 50

Active in 1 of 26 cantons

  • SOSolothurn
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.85.03%
    • Full methodology

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