PENANG USER’S PERCEPTION OF DOMESTIC WATER QUALITY, HEALTH RISK CONCERN AND WILLINGNESS TO PAY: A PILOT STUDY. Jurnal Teknologi, [S. l.], v. 74, n. 11, 2015. DOI: 10.11113/jt.v74.4878. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/4878.. Acesso em: 23 jul. 2024.