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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesMünchenbuchseeFehlmann Wasseraufbereitung AG
Fehlmann Wasseraufbereitung AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the planning, manufacture, delivery, installation and maintenance of water treatment plants, particularly for public and private swimming pools, hotels, municipalities and special facilities. This also includes lift floors, well systems and drinking water treatment plants.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered5
Water treatment engineering
Planning, installation, commissioning and documentation of water treatment plants; including training of the persons responsible, as well as maintenance service and support for existing plants.
Public baths
Planning and management of outdoor pools, indoor pools and thermal and wellness pools, in compliance with SIA standards, the Lebensmittelbuch and federal and cantonal requirements.
Hotel pools
Planning, construction and service of outdoor pools, indoor pools and thermal and wellness pools for hotels, focusing on water quality, pool hygiene and regular system inspections.
Private pools
Planning and construction of private outdoor pools and indoor pools to a professional standard, clean swimming pool water and a strong focus on hygiene.
Special systems
Planning, calculation, execution and management of drinking water treatment plants and wells, industrial and non-potable process water systems, aquariums and water terrariums, as well as movable floors in swimming pools.
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4.2/5

Fehlmann Wasseraufbereitung AG

Trust & reputation

ranQ Trust Score of Fehlmann Wasseraufbereitung AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Fehlmann Wasseraufbereitung AG scores 71.3 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.70.024%
  • 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.61.010%
  • 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%
Fehlmann Wasseraufbereitung AG scores 89.3 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.70.07%
Fehlmann Wasseraufbereitung AG scores 85.0 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).85.022%
Fehlmann Wasseraufbereitung AG scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Fehlmann Wasseraufbereitung AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.5 out of 5 stars from 10 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
4.5
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle4.510
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Bernstrasse 120
3053 Münchenbuchsee
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.966.832
Founded
1980 · 46 years
Last commercial register change
January 27, 2026
Employees
11 to 20
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.100.06%
  • 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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