HYDROGEOCHEMICAL FACIES AND DRINKING-WATER SUITABILITY OF GROUNDWATER IN OIL-IMPACTED NIGER DELTA COMMUNITIES: A PIPER DIAGRAM AND WHO COMPLIANCE ASSESSMENT OF OKERENKOKO, KURUTIE, AND KUNUKUNUMA, DELTA STATE, NIGERIA. IJMIR. 2026;8(3):327-346. Accessed November 12, 2026. https://ijmir.edu.ng/index.php/ijmir/article/view/136