“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”. 2026. INTERNATIONAL JOURNAL OF MARITIME AND INTERDISCIPLINARY REASEARCH (IJMIR) 8 (3): 327-46. https://ijmir.edu.ng/index.php/ijmir/article/view/136.