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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesOberbürenEGWA AG
EGWA AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of EGWA AG is the provision of services in the field of sanitary service and pipeline construction, particularly in the areas of sanitary installations, repairs, sanitary service, special pipeline construction and tank construction for viscous fluids, as well as drinking water treatment with the product Greenline eVolution.

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Products & services

Industry:Plumbing & Building Services
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EGWA AG

7
Sanitary installations
Assembly and commissioning of sanitary facilities, drinking-water and wastewater pipes, material supply, as well as advice for new builds and renovations and appliance selection.
Complete bathroom renovations
Complete bathroom renovations from dismantling to final installation, including planning and execution for family bathrooms and barrier-free solutions.
Renewal of water and wastewater pipes
Planning and installation of water and wastewater pipes for new builds, refurbishment, conversions or pipe replacement, with standard-compliant workmanship.
Heating installations
Planning and installation of complete heating systems from heat generation to heat distribution, including solutions in the field of renewable energy.
Special pipes for demanding applications
Special pipes for hygienic requirements, compressed air, contaminated wastewater, rainwater use as well as drinking and service water tanks.
Drinking water purification
Water treatment with H₂O TrinkWasser for households, with physical filtration, pump, UV lamp, remineralisation and an optional three-way valve.
Water softening
EcoWater Greenline eVolution water softening systems for single- and two-family houses with ion exchange, automatic regeneration and WLAN monitoring.
Trust & reputation

ranQ Trust Score of EGWA AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

EGWA AG scores 74.7 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.85.424%
  • 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.68.910%
  • 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.50.08%
EGWA AG scores 72.8 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.70.212%
  • 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%
EGWA AG scores 83.3 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).83.322%
EGWA 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

EGWA AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 14 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 14 reviews across all connected sources

Sources
GGoogle514
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Staubhusen 120
9245 Oberbüren
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
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-380.727.352
Founded
2020 · 6 years
Last commercial register change
September 7, 2021
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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