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