| Abstrakt: |
One of the resources that cannot be separated from human life is water. In 2020, the Central Bureau of Statistics revealed that Indonesia has access to clean water up to 90.21%. However, it is not enough to cover all areas in Indonesia, especially coastal or rural areas. This research focuses on the area of Tegal Sari Hamlet, Kupang Village, Jabon District, Sidoarjo Regency, East Java Province, where the area has problems with brackish well water. The purpose of this research is to find the changes that occur when using the Reverse Osmosis (RO) tool in this brackish water treatment. This research used an experimental method, to determine the effect of the treatment on the test object. The treatment is carried out by flowing water through the Reverse Osmosis (RO) tool to make the water meet the world health organization existing standards of pH, TDS, and EC, including 6.5-8.5 units, 500 mg/l and 400 µs/cm, respectively. Based on the results of the experiments conducted, it is known that the use of RO can reduce the pH, TDS, and EC of brackish water. The best outcomes from the experiments conducted were increasing the pH from 7.9 to 8.4, decreasing TDS from 5260 ppm to 433 ppm, and EC from 10,580 µs / cm to 864 µs/cm. [ABSTRACT FROM AUTHOR] |
