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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumberOberwil BlAQUA GONTIER AG
AQUA GONTIER AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

AQUA GONTIER AG develops, manufactures and sells water treatment systems, including water softeners, dosing systems, cartridge deionisers, activated carbon filters and reverse osmosis systems. Its services include consultation, planning, commissioning, maintenance and other support for residential and commercial applications.

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Offering

Products & services

Industry:Plumber
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AQUA GONTIER AG

✓ Offered7
Water treatment solutions
Complete solutions for water treatment, from personal consultation and planning through commissioning to regular maintenance and service.
Water softeners
Water softeners for cold and hot water supply, including parallel softeners for larger systems and residential properties.
Reverse osmosis systems
Reverse osmosis systems for purified and ultrapure water, with configurable solutions for different applications, space requirements and industrial uses.
Dosing systems
Dosing systems for water treatment, as a product designed for operation in suitable treatment systems.
Cartridge deionizers and activated carbon filters
Cartridge deionizers and activated carbon filters for water treatment, including for desalination and the removal of PFAS.
Maintenance and service for water treatment plants
Maintenance concepts, hygiene and maintenance service, salt delivery service, resin changes, and a 24/7 fault service, 365 days per year.
Consulting, planning and commissioning
Tailored consulting, planning and commissioning of water treatment systems, matched to the respective requirements and application areas.
Trust & reputation

ranQ Trust Score of AQUA GONTIER AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of November 2026

AQUA GONTIER AG scores 77.5 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.77.024%
  • 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.70.510%
  • 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%
AQUA GONTIER AG scores 88.3 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.97.712%
  • 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%
AQUA GONTIER AG scores 86.7 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).86.722%
AQUA GONTIER AG scores 57.1 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 35.57.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

AQUA GONTIER AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.7 out of 5 stars from 15 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
4.7
of 5

Aggregated from 15 reviews across all connected sources

Sources
GGoogle4.715
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Hohestrasse 134
4104 Oberwil Bl
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-494.367.668
Founded
2012 · 14 years
Last commercial register change
August 26, 2024
Employees
11 to 20

Active in 1 of 26 cantons

  • BLBasel-Country
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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