The CCQRGA's drinking water department is responsible for producing drinking water and operating the network for the entire territory of the Communauté de Communes (except for the communes of Laguépie and Castanet). The water department manages six drinking water treatment plants and 700 km of network.

The technical teams in the drinking water department monitor and maintain the entire water network on a daily basis, repair leaks frequently and connect new homes in the area. This department has an on-call team that can intervene 24 hours a day, 7 days a week, in the event of an emergency (leak, breakdown, etc.) to ensure the continuity of the water service.

The team responsible for producing drinking water monitors, develops and optimises the treatment processes at the drinking water treatment plants, with the aim of supplying high-quality water to the population.

The works team, which specialises in network renewal, renews the most obsolete networks throughout the year.

The administrative centre has undergone a number of changes this year to provide the best possible response to user requests.