Class 037
Construction and Repair Services
Boring of wells; drilling of wells; maintenance and servicing of water treatment and water purification installations; installation and repair of water supply and waste treatment apparatus; repair and refurbishment of water measuring devices.
Class 040
Treatment & Processing of Materials Services
Advisory services relating to water treatment and purification; drinking water treatment; advisory services relating to the use of water treatment boilers; advisory services relating to the use of water treatment chemicals; advisory services relating to the use of water treatment cooling systems; disposal of waste from water treatment installations; treatment [purification] of water; treatment of waste water from generating operations; treatment of water; waste water treatment; water treatment; water treatment [demineralising] services, advisory services relating thereto.
