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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryReal EstateCleaning companyKöllikenstc umwelt AG
stc umwelt AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

stc umwelt AG provides surface-treatment and cleaning services for the construction, industrial and commercial sectors. Its services include industrial cleaning, high-pressure water concrete removal, façade cleaning, graffiti removal, mould treatment, and hygiene and disinfection work.

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Service area

Offering

Products & services

Industry:Cleaning company
✓ Offered7
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4.0/5

stc umwelt AG

Surface technology
Industrial cleaning, concrete removal with high-pressure water, cleaning and protecting facades, removing graffiti and applying graffiti protection, removing coatings and protecting the substrate, shaping and cleaning surfaces, wood cleaning, vehicle preservation and paint stripping, work on listed buildings and churches.
Microbiology / Hygiene / Mould
Allergen measurements, hygiene, cold fogging and disinfection as well as mould disinfection for buildings and rooms.
Sandblasting, gentle blasting, soda blasting
Blasting methods for cleaning and surface preparation, used as sandblasting, gentle blasting and soda blasting.
Dry ice blasting
Cleaning and removal methods using dry ice for sensitive or hard-to-access surfaces.
High-pressure water jetting
Cleaning and removal work with high-pressure water, including high-pressure water jetting and concrete removal.
Chemical methods
Chemical cleaning and treatment methods for various surface and remediation tasks.
Wastewater treatment and disposal
Treatment and disposal of wastewater associated with cleaning and blasting work.
Trust & reputation

ranQ Trust Score of stc umwelt AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

stc umwelt AG scores 54.3 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.46.424%
  • 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.40.910%
  • 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.95.08%
stc umwelt AG scores 85.5 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.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.55.07%
stc umwelt AG scores 86.7 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).86.722%
stc umwelt AG scores 60.0 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 35.60.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

stc umwelt AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 3.0 out of 5 stars from 4 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
3
of 5

Aggregated from 4 reviews across all connected sources

Sources
GGoogle34
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Comparisons

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Location

Industriering 1267
5742 Kölliken
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-113.045.372
Founded
2006 · 20 years
Last commercial register change
March 1, 2024
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • AGKölliken
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

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