Water Supply in the
Canton of St. Gallen

15 companies in Water Supply based in the Canton of St. Gallen — name and year of registration from the commercial register. The list below shows them all.

Companies

All 15 companies in the Canton of St. Gallen

EVS AG

Since 1992

Gas energyBiogasWater / pipeline construction

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AQUALITY AG

Since 2016

Quality assurance for water supply systems (AQUAsupport)Cleaning and disinfection of reservoirs and pipelines (AQUAclean)Well regeneration and well rehabilitation (AQUAplus)

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Seitz Messtechnik AG

Since 2017

Measurement and control technology for water and wastewaterPlanning & consultingMeasurement campaigns

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Green Ocean Solutions AG

Since 2018

Wastewater treatmentTreatment of highly concentrated wastewaterAdvanced Oxidation (ORCAN®)

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Genossenschaft Wasserversorgung Rapperswil-Jona

Drinking, service and fire water supplyWater supply fees and connection chargesConstruction water

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Genossenschaft Trinkwasserversorgung Buchsteig

Since 1901

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Wasserversorgungsgenossenschaft Steinach

Since 1902

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Dorfkorporation Alterschwil Genossenschaft

Since 1935

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Wasserversorgung Oetwil Genossenschaft

Since 1953

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Rainmaker

Since 2000

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IWT International Water Technologies AG

Since 2004

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WVU Unterterzen AG

Since 2007

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FERNANDEZ GARCIA ENGINEERING

Since 2014

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Haquanys GmbH

Since 2019

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Bewässerungsgenossenschaft Wartau

Since 2025

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Water Supply in the Canton of St. Gallen

15Water SupplyCommercial register (Zefix) · as of September 26, 2026

2007Median year of registrationCommercial register (Zefix) · as of September 26, 2026

15in the Canton of St. GallenCommercial register (Zefix) · as of September 26, 2026

455in SwitzerlandCommercial register (Zefix) · as of September 26, 2026

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Other industries in the Canton of St. Gallen

All companies in the Canton of St. Gallen

Property Management2,418 Holding Companies2,058 Management Consulting1,737 Restaurants1,585 Real Estate Project Development1,459 IT Consulting & Services1,275 Real Estate Brokerage1,057 Technical Consulting & Engineering984 Fiduciary Offices984 Auto Repair Shops873 Software Development856 Advertising Agencies824 Automotive & Vehicle Trade785 Coaching & Personal Development741 Facility Management & Cleaning707 Online Shops702 Wholesale - General Specialty Trade677 Architecture Firms664 Painting & Plastering585 Construction & Project Management574 Building Maintenance559 General Contractors543 Mechanical Engineering Industry541 Plumbing & Building Services529 Interior Construction526 Food Processing526 Hair Salons509 Other Service Industries498 Trade Fair & Event Organizers489 Logistics & Transport Companies480 Electrical Planning & Installation438 Timber Construction & Carpentry437 Metal Construction403 Horticulture & Landscaping402 Wholesale - Machinery & Technical Equipment399 Beauty Salons391 Flooring & Tiling389 Retail - Food & Luxury Items386 Building Construction384 Catering373 Retail - General Specialty Trade365 Repair of Machinery & Electronic Devices358 Textile & Clothing Industry351 Continuing Education Institutes348 Retail - Textiles & Clothing344 Recruitment & HR Consulting328 Joinery326 NGOs & NPOs318

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Water Supply in theCanton of St. Gallen

All 15 companies in the Canton of St. Gallen

Water Supply in other places

Other industries in the Canton of St. Gallen

Water Supply in the
Canton of St. Gallen