Evaluation of The Bantar Water Treatment Plant (WTP) at PDAB Tirtatama Special Region of Yogyakarta

Alfian Rizky Rizaldianto*, Muhammad Asyraf Sidqi Anandityo, Hanindya Putri Utami, Baehaqi Averizqa, Bimastyaji Surya Ramadan

Abstract

The Bantar Water Treatment Plant (WTP) operated by PDAB Tirtatama is a key infrastructure for clean water supply in the Special Region of Yogyakarta. This study evaluates the performance of the Bantar WTP by assessing treatment unit compliance with design criteria and water quality standards. The evaluation was conducted through field observations, hydraulic calculations, and laboratory water quality analyses during a one-month internship period. The results show that several raw water parameters from the Progo River, including color, turbidity, and zinc, do not meet the Regional Regulation of the Special Region of Yogyakarta No. 20 of 2008. While the coagulation, flocculation, and filtration units comply with SNI 6774:2008, the pre-sedimentation and sedimentation units fail to meet Reynolds and Froude number criteria, resulting in non-laminar flow conditions that hinder particle settling. Despite these limitations, treated water quality in the reservoir complies with the Ministry of Health Regulation No. 2 of 2023. Operational improvements and enhanced maintenance are recommended to ensure sustainable performance.

Keywords

water treatment plant; performance evaluation; water quality standards

Cite This Article

Rizaldianto, A. R., Anandityo, M. A. S., Utami, H. P., Averizqa, B., Ramadan, B. S. (2025). Evaluation of The Bantar Water Treatment Plant (WTP) at PDAB Tirtatama Special Region of Yogyakarta. International Journal of Scientific Advances (IJSCIA), Volume 6| Issue 6: Nov – Dec 2025, Pages 1220-1226 URL: https://www.ijscia.com/wp-content/uploads/2025/12/Volume6-Issue6-Nov-Dec-No.998-1220-1226.pdf

Volume 6 | Issue 6: Nov – Dec 2025