Gruppenwasserversorgung Vororte und Glattal (GVG)

About GVG

The Zweckverband Gruppenwasserversorgung Vororte und Glattal (GVG) is a public-law corporation with its own legal personality, based in Glattbrugg. It ensures the water supply in 30 municipalities of the Furt and Glatt valleys and, with an annual water turnover of 10 to 12 million m³, is the largest group water supply in the Zürich region. Large-caliber transport pipelines with pipe diameters of 600 and 800 mm supply the local group water supplies and member municipalities with drinking water. The GVG does not own or operate any production plants of its own; the main water supplier is the Wasserversorgung Zürich (Lake Zürich), the second supplier is Stadtwerk Winterthur. Since the commissioning of the drinking water interconnection pipeline "Zürich–Winterthur" in 2012, security of supply has been increased. The organisation operates and maintains the transport pipeline network, carries out quality controls and ensures a 24-hour on-call service.

Site

Glattbrugg

Processes

Group Water Supply (transport and distribution of drinking water), Operation and maintenance of transport pipelines (NW 600/800 mm), Water quality controls, 24h on-call service (365 days)

Materials

Large-Caliber Transport Pipelines

Certificates

Cantonal Laboratory Tests

Founded

1967

Industries

Drinking Water Supply, Municipalities, Commercial, Industrial and Service Enterprises

1. 01

   Water procurement from Wasserversorgung Zürich and Stadtwerk Winterthur

2. 02

   Transport via large-caliber interconnection pipelines (NW 600/800 mm)

3. 03

   Distribution to local group water supplies and member municipalities

4. 04

   Quality controls

5. 05

   24h on-call service and network maintenance

Pipeline Network and Facilities

Site

Water Quality

In 2025, the GVG carried out 20 control measurements in its pipeline network; the samples were tested bacteriologically and chemically by the Cantonal Laboratory, and all results were faultless. In addition, the water suppliers Wasserversorgung Zürich and Stadtwerk Winterthur ensure multiple quality controls.

History

1. 1967

   Government Council approves the association agreement (14.9.1967); first Delegates' Assembly on 13.10.1967 in Kloten

2. 1971

   Extraordinary Delegates' Assembly approves the new agreement with the WV Zürich (6.9.1971)

3. 1975

   Delegates' Assembly approves construction credit of Fr. 15'523'000 for interconnection pipelines NW 600 Furttal and upper Glattal

4. 1981

   Official inauguration ceremony of the GVG facilities on 30.9.1981

5. 2012

   Commissioning of the drinking water interconnection pipeline "Zürich–Winterthur"; construction work WL Bassersdorf-Müliberg (4 km) completed

6. 2015

   GVG daily peak of 40'840 m³/day on 17.7.2015 (third-highest value)

7. 2022

   Entry into force of the revised statutes (admission of the 30th member municipality Neerach); approval of the strategic plan by the Building Department of the Canton of Zürich on 7.10.2022

8. 2023

   Delegates' Assembly transfers the accounting to Energie Opfikon AG (19.4.2023)