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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringSolothurnWanner AG Solothurn
Wanner AG Solothurn Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Wanner AG is the provision of services in the fields of geology, environment and natural hazards. Specifically, this includes: geological investigations and consulting, water protection and remediation, geothermal energy and heat utilization, contaminated site remediation and disposal, building pollutant investigation and remediation, soil and environmental consulting, natural hazard assessment and prevention, radon testing, and geological excursions and further education. The company offers these services to a variety of clients, including private individuals, companies, architects, engineers, municipalities and cantons.

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Products & services

Industry:Technical Consulting & Engineering
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3.9/5

Wanner AG Solothurn

Civil Engineering Firms
✓ Offered10
Subsoil
Subsoil investigations, geotechnical subsoil parameters according to SIA 267, excavations retaining works, foundation design, stability proofs for slopes, investigation campaigns and geological construction support.
Water protection
Groundwater monitoring, groundwater studies, definition of protection zones, infiltration maps, groundwater drawdown, work on spring and groundwater intakes, and site water protection.
Geothermal energy
Preliminary assessments, hydrogeological investigations, feasibility studies and applications for geothermal boreholes and groundwater heat pumps, as well as geological support for drilling.
Contaminated sites
Historical and technical investigations of contaminated sites, detailed investigations, remediation projects, remediation supervision, disposal concepts and monitoring programmes.
Building contaminants
Building contaminant diagnostics, sampling and reports, advice on professional removal, site management for remediation works, cost estimates and tender support.
Soil and environment
Environmental construction monitoring, soil-related construction supervision, soil protection concepts, UVB and environmental reports, monitoring programmes, sampling and assessment of soil contamination.
Natural hazards
Hazard maps, preliminary assessments, mapping of past events, assessment of local hazard potential, identification of protection deficits at individual sites and protective measures against natural hazards.
Subsurface investigations
Cone penetration tests (ram probing), hand auger drilling, profiling, pumping and infiltration tests, groundwater observation, field measurements and sampling of water, soil and excavated material.
Radon investigations
Radon measurements in properties and apartments, advice for new buildings, interpretation of measurement results in existing buildings, radon sniffing campaigns and protective measures.
Geological excursions
Geological excursions and courses on rocks, minerals, fossils, geocaching and regional geology topics for children, schools and adults.
Trust & reputation

ranQ Trust Score of Wanner AG Solothurn: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Wanner AG Solothurn scores 47.2 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.63.624%
  • 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.17.610%
  • 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%
Wanner AG Solothurn 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%
Wanner AG Solothurn scores 85.0 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).85.022%
Wanner AG Solothurn scores 40.0 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 35.40.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Wanner AG Solothurn reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.0 out of 5 stars from 1 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
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle41
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Dornacherstrasse 29
4500 Solothurn

At a glance

Legal form
Corporation
UID
CHE-107.546.631
Founded
1993 · 33 years
Last commercial register change
January 15, 2025
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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