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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentWaste Management IndustryZurichKamm Kanalunterhalt AG
Kamm Kanalunterhalt AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Kamm Kanalunterhalt AG is sewer cleaning and sewer renovation, including related services such as tightness testing, milling work, sewer inspection and suction work, particularly for properties, new buildings and renovations in Zurich.

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Products & services

Industry:Waste Management Industry
✓ Offered6
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3.9/5

Kamm Kanalunterhalt AG

Sewer cleaning
Sewer cleaning and drain cleaning for channels and drains, including cleaning and flushing to ensure functionality and a longer service life.
Sewer rehabilitation
Sewer rehabilitation of entire pipelines or partial sections using inlining technology, without excavation, dirt and noise.
Sewer inspection
Sewer inspection using a sewer TV camera to assess the condition of pipelines, including documentation on CD, USB or as a report.
Leakage testing
Leakage testing of private wastewater pipelines in the ground to prevent the escape of dirty water and the ingress of groundwater, carried out throughout Switzerland.
Milling work
Milling work to remove deposits and root ingrowths in channels and drains to prevent blockages, flooding and ruptures.
Suction work
Suction pumping work with transport and disposal for silt collectors, yard collectors, soakage shafts, oil and petrol separators, grease separators and sewage tanks.
Trust & reputation

ranQ Trust Score of Kamm Kanalunterhalt AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Kamm Kanalunterhalt AG scores 63.9 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.70.824%
  • 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.27.910%
  • 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.88.08%
Kamm Kanalunterhalt AG scores 74.8 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.75.012%
  • 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%
Kamm Kanalunterhalt AG scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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).83.322%
Kamm Kanalunterhalt AG scores 2.6 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 35.2.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kamm Kanalunterhalt AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Badenerstrasse 565a
8048 Zurich
Opening hours
Mon
24h
Tue
24h
Wed
24h
Thu
24h
Fri
24h
Sat
24h
Sun
24h

At a glance

Legal form
Corporation
UID
CHE-176.714.724
Founded
2019 · 7 years
Last commercial register change
April 4, 2023
Employees
1 to 10
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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