Definition:
A set of water network devices serving collection of surface and underground waters, public wells, devices serving storage and treatment of water, water supply networks, water pressure control devices.

Low-level terms:

• Capacity production of watersupply facilities of twenty-four hours
• Population connected to water supply system
• Watersupply connection
• Water supply distribution network
• Transmission (main) water supply network
• Wholesale of water/consumption of water
• Losses from water supply network
• Water delivered to households
• Water delivered for production purposes
• Water collected from intakes
• Street outlets