SDG 6 discusses water, which is closely related to human life. The need for water itself is an important aspect of supporting the daily needs of the community. According to UNESCO, the daily requirement for clean water is 49.5 litres per capita. Indonesia itself uses 5,262 m3 of water in 2020. This amount of water use is divided into several groups, such as social user groups, special user groups, commercial and industrial user groups, and non-commercial user groups. The university as a social user group used 97.9 million m3 with 204,803 subscribers in 2020.

Universitas Airlangga measures water use in the university environment. The source of water used in the university environment comes from two sources, namely water from PDAM Surabaya, consumable storage water, and rainwater storage. Out of a total building area of 559,605 m2, the university uses about 8,000 m3 of water annually. This number is adjusted for the total population of the university, which is around 32 thousand people.

As a way of reducing water waste, the university is also trying to maximise the use of water and the process of water recycling in a sustainable manner. The university collects used water for ablution and rainwater for reuse. The reused water is mostly used for watering plants, flushing toilets, and as a source of water for university lakes. The use of this water is adjusted to the needs and use of water in the university environment for one academic year.

Author : Galuh Kurnia Ramadhani