<![CDATA[Water is one of the human needs. There are many types of water that are needed and good for humans, including alkaline water and acidic water. Alkaline water has benefits, one of which is to improve the immune system. While acidic water has benefits, one of which is as an antiseptic or disinfectant. There are obstacles for this water-producing device, which is that it is still very expensive for water-producing equipment and it is still very rare to use solar energy as a source of electricity. The author will make a device that produces alkaline water and acid water with solar energy as a power source using a Solar Cell Module (MSS). Water ionizer is an instrument to ionize water and its mineral content by using water electrolysis method, so that the water ionizer can produce alkaline water and acid water. The tool in this study used a 20 WP solar cell module that stores electrical energy in a 12V 7AH battery. Other components used are the container water ionizer, PH4502C pH sensor, INA219 current sensor, DS18B20 temperature sensor which is connected to a microcontroller. The value of the current produced depends on the TDS of the water used, if the TDS of the water is high, the current generated is also high. Changes in pH obtained in this study with a maximum pH increase of 2.60 and a maximum decrease of 9,30 pH. ]]>
