Feby Melanie, Ruri Prihatini Lubis, Dasar Martinus Sembiring, Said Iqbal Zaini, Sahri Muda, Rudi Iskandar, Ade Farnan Saragih, & Suangro L.H. Sitanggang. (2026). ANALYSIS OF FACTORS CAUSING THE LOW SUBSCRIPTION LEVEL OF PDAM TIRTA SARI IN BINJAI CITY. Bulletin of Engineering Science, Technology and Industry, 3(4), 609–616. https://doi.org/10.59733/besti.v3i4.157