I. I. Nwajuaku, O. E. Ekenta, and A. I. Nwajuaku, “Treatment of Greywater for Non-Potable Applications”, ASRJETS-Journal, vol. 11, no. 1, pp. 32–41, Jan. 2015, Accessed: Sep. 14, 2025. [Online]. Available: https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/521