Performance analysis of infrared-based automatic ablution water faucet in an operational environment

The demand for clean water is increasing along with the growing population, where the demand exceeds its availability. Particularly in urban areas, there is high demand for water but limited availability. One activity that consumes a significant amount of clean water is ablution (16.2 litres/person/day). This study is related to efforts to conserve clean water by using an automatic ablution faucet with a printed circuit board (PCB). The use of PCB aims to make the electrical circuit compact, and the dimensions of the casing used are also smaller. The implementation of the automatic ablution faucet was conducted at Al-Mujahidin Mosque, Kukusan, using three faucets. Data collection was carried out for seven days during each prayer time, with three respondents at each time, using a flowmeter K24, stopwatch, and smart plug as measurement tools. This system is capable of saving water volume up to 44.75%. All measurement results, which subsequently supported operational cost calculations, showed a savings of 25.73%.