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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringSargansDr. Bernasconi AG
Dr. Bernasconi AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

The core activity of Dr. Bernasconi AG is consulting and services in the fields of hydrogeology and geology. Specifically, this includes the investigation and monitoring of landslides, risk assessment and planning of measures, hydrochemical analysis of groundwater and surface water, planning and supervision of spring and groundwater abstraction, creation of 3D subsurface models, and consulting on radon, asbestos and building pollutants. Additionally, the company offers services in the areas of groundwater protection, river restoration, hydraulic engineering and well construction.

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Products & services

Industry:Technical Consulting & Engineering
✓ Offered12
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3.9/5

Dr. Bernasconi AG

Hydrogeological and geological consulting
Consulting on issues in hydrogeology and geology, including needs assessment and solution-oriented processing of regional and local geological conditions.
Subsoil investigations and ground models
Planning and management of investigations for above-ground and underground structures, preparation of ground models, and geological consulting for design and construction execution.
Subsurface probing
Concepts for boreholes, probing trenches, percussion sounding, and geotechnical, geophysical and geochemical probing methods; sampling and description of the subsurface structure.
Natural hazard assessment and slope stabilisation
Assessment of rockfall and rockslide risks, investigation and monitoring of landslides, as well as planning and support for immediate measures and stabilisation and remediation works.
Sampling and analyses
Planning, management and interpretation of investigations involving sampling and analyses of drinking water, process water, groundwater, seepage water and wastewater, as well as solids and pore air.
Spring and groundwater intakes
Search, exploration and assessment of resources, development of intake concepts and hydrogeological planning bases, and support during construction.
3D modelling of subsurface and groundwater
Digital representations of the subsurface and tailor-made groundwater models using geoinformatics tools and BIM expertise.
Asbestos and building pollutant diagnostics
Diagnostics for existing buildings to ensure safe removal and disposal of health-hazardous materials, in particular asbestos and other building pollutants.
Landfill assessments and monitoring
Review and assessment of the geological, geotechnical and hydrogeological suitability of sites, development of monitoring concepts and management of monitoring activities.
Groundwater protection and water protection
Processing of regional hydrogeological data, preparation of documents and reference materials for protection zones, and development of measures concepts to protect springs, groundwater and surface waters.
Infiltration planning and stormwater drainage
Consulting for the planning of stormwater drainage and dimensioning of retention and infiltration systems for roof and paved-area runoff.
Contaminated site and suspected area assessments
Advisory services for dealing with contaminated sites, definition of approaches, review of remediation objectives, management of investigations and risk assessment.
Trust & reputation

ranQ Trust Score of Dr. Bernasconi AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 100% · As of October 2026

Dr. Bernasconi AG scores 53.8 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.35.08%
Dr. Bernasconi 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%
Dr. Bernasconi 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%
Dr. Bernasconi AG scores 36.5 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 35.62.94%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.10.04%
Qualifications+0.00

Dr. Bernasconi 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. 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.

Press

Media

January 21, 2023Media
Weil das Grundwasser belastet sein könnte: Buchser Afrika-See wird untersucht
tagblatt.ch

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Location

Ragazerstrasse 29
7320 Sargans

At a glance

Legal form
Corporation
UID
CHE-114.332.940
Founded
2008 · 18 years
Last commercial register change
January 8, 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.
100.0
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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