Water Supply in the
Canton of Aargau

StWZ Wasser AG

Since 2001 · 21–50 empl.·4.2(31)

StWZ Wasser AG supplies drinking water and provides associated services, including information on water quality and origin, tariffs and installation inspections. The offering also includes groundwater level monitoring, guidance on water saving and customer service/contact channels.

SWL Wasser AG

Since 2002 · 51–100 empl.·3.8(33)

SWL Wasser AG supplies drinking water and operates water infrastructure. The company obtains water from groundwater and springs, runs pump stations, reservoirs and distribution pipelines, and is responsible for water quality monitoring (spring water is treated with UV light).

TBS Wasser AG

Since 2011 · 1–10 empl.·3.9(31)

TBS Wasser AG is a utility company that supplies drinking water to the population in Suhr and ensures water availability for firefighting purposes. The company also operates infrastructure and facilities in the areas of water, energy, telecommunications and district heating.

waterlife swiss GmbH

Since 2013 · 1–10 empl.·4.2(150)

The company's core activity is the development, manufacture and distribution of water treatment systems, as well as the provision of services such as technical support, regular maintenance and spare parts supply for these systems. The company offers its products and services to private households, companies and factories, with a focus on improving water quality and long-term customer satisfaction.

Wasserversorgungs-Genossenschaft Muri

Since 1900 · 1–10 empl.

The company's core activity is water supply, particularly the provision of drinking water in sufficient quantity and quality for the municipality of Muri. This includes the extraction, treatment and distribution of groundwater as well as the maintenance and upkeep of the water supply facilities.

Wasserversorgungs-Genossenschaft Lengnau

Since 1960 · 11–20 empl.

Wasserversorgungs-Genossenschaft Lengnau operates and maintains the local water supply, including waterworks and the distribution network; it publishes regulations and provides an emergency contact number.

Eniwa Wasser AG

Since 2000 · 21–50 empl.

Eniwa Wasser AG operates drinking-water services and feeds untreated groundwater into the distribution network. The company regularly monitors water quality, manages storage reservoirs and provides water connection and maintenance services for house connections, public fountains and hydrants.

IBB Wasser AG

Since 2001 · 11–20 empl.

IBB Wasser AG is a utility that supplies drinking water and operates the distribution network. It operates a main pipeline network of nearly 80 km and supplies the municipal area of Brugg (including Schinznach-Bad, Umiken and Lauffohr); water quality is monitored through regular sampling and cantonal testing, and tariffs, terms and customer forms are provided for private and commercial customers.

Wasserversorgung Ehrendingen Genossenschaft

Since 2006 · 11–20 empl.

The core activity of Wasserversorgung Ehrendingen Genossenschaft is to supply the inhabitants of the supply area with flawless drinking water at reasonable costs and to ensure the fire water reserve. To this end, the cooperative operates and maintains the necessary water supply facilities.

TB Gränichen Wasser AG

Since 2011 · 11–20 empl.·3.2(9)

TB Gränichen Wasser AG supplies drinking and utility water, sourcing from springs and groundwater and operating reservoirs and pump stations. Its responsibilities include monitoring water quality, maintaining and repairing infrastructure, creating new connections, ensuring firefighting water reserves, customer administration and emergency response.

Blu-Grid GmbH

Since 2025 · 1–10 empl.

Blu-Grid GmbH provides consultancy and practical solutions for drinking water hygiene, including risk assessments, water sampling and training for operators of large facilities, property managers and water utilities. The company sells and supports SuSAn rapid test kits and automated analysis systems for on-site Legionella detection and supplies Legionella filters.

aqua Partner AG

Since 2019 · 11–20 empl.·1.0(1)

The core activity of aquaPartner AG is the planning, construction, maintenance and operation of water supply systems, including the assumption of responsibility and quality management for drinking water quality, plant safety and availability. This also includes specific services such as standby services, sanitary services, well construction services and pipeline construction.