Meutia Nanda, et al. “Analysis of Physical Water Quality in Griya Asri Housing District Fountain Stone Regency Deli Serdang”. International Journal of Health, Economics, and Social Sciences (IJHESS), vol. 6, no. 4, Oct. 2024, p. 1024~1027, doi:10.56338/ijhess.v6i4.5700.