Sewage treatment is a type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable for discharge to the surrounding environment or an intended reuse application, thereby preventing water pollution from raw sewage discharges.

Connected sewerage service have sewage outlets that are directly linked to a sewage treatment plant via an underground network of sewer pipes. IWK is responsible for the operations and maintenance of all public sewage treatment plants.

Harvesting Tank is installed to use rainwater for later use, reducing the use of tap water for economic or environmental reasons and contributing to self-sufficiency. Raining in arid climate buckets are typically used during the rainy season to store water for use during drying.