Source: KOMPASDate: March 4, 2022 BENGKAYANG, KOMPAS.com - Unlicensed gold mining (PETI) activities that pollute the clean water source of PDAM Tirta Bengkayang at the Riam Madi Intake, Tiga Berkat Village, Lumar District, Bengkayang Regency, West Kalimantan (West Kalimantan) have penetrated i...