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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,194 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringWeinfeldenIngenieure Widmer + Partner AG
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Ingenieure Widmer + Partner AG

Summary

About the company

Ingenieure Widmer + Partner AG provides engineering services in water supply, road construction and general civil engineering. Its services also include an accredited drinking-water laboratory and specialist work such as pressure testing, utility line detection, hydrant measurements, surveying and cadastre management.

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Products & services

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Water Supply Engineering
Planning, design and construction supervision for water supply systems, network calculations, quality assurance, supply planning, protection zones, hydrant plans and drinking water analyses.
Road Engineering
Planning, design and construction supervision for road works, cantonal and municipal roads, site access roads, cycle facilities, traffic areas, field and forest roads, and pavement renewals.
Civil Engineering
Planning, design and construction supervision for utility works, service lines, water engineering, earthworks and urban drainage with sewer lines, special structures, stormwater and seepage pipelines.
Drinking Water Laboratory
Accredited testing laboratory for microbiological and chemical drinking-water analyses, including total germ count, enterococci, E. coli, nitrate, nitrite, sulphate, iron, hardness, conductivity and pH.
Pressure Testing
Digital pressure testing of water pipes with pressure and temperature measurement, autonomous recording and configurable data logging for tamper-resistant results.
Utility Line Detection
Detection and marking of metallic main and service connections, uncovering buried valve covers and locating non-metallic lines with a probe to prevent damage and complete records.
Hydrant Flow Measurements
Hydrant flow measurements with simultaneous static and dynamic pressure measurement, mobile recording and chart output for fire-brigade planning.
Infiltration and Retention Systems
Calculation of infiltration and retention systems such as surface, swale, trench and shaft infiltration, plus retention basins, swales, shafts and channels.
Utility Cadastre
Administration and editing of utility cadastres according to GIS and SIA standards, with an integrated database for water and utility-line data.
Construction and Engineering Surveying
Surveying and setting-out for project planning and cadastre management using modern technologies for flexible and efficient field work.
Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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Location

Amriswilerstrasse 155
8570 Weinfelden
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-112.331.361
Founded
2005 · 21 years
Last commercial register change
July 15, 2026
Employees
11 to 20

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