On 30.04.2019 Thursday, a visit was made to the drinking water production facilities in the Duraliler district of Antalya ASAT (Antalya Water and Wastewater) where the project group students and Antalya drinking water were met. In the company of environmental engineers working in the institution, the production wells where the water was provided and the chlorination unit were visited. The hardness values of the drinking water (anion and cations in water) were shown to the students. Several students measured the hardness of the water by measuring the water.