1. Abd El-Salam MM, Abu-Zuid GI (2015) Impact of landfill leachate on the groundwater quality: a case study in Egypt. J Adv Res 6(4):579–586
2. Abdullahi NK, Osazuwa IB, Sule PO (2011) Application of integrated geophysical techniques in the investigation of groundwater contamination: a case study of municipal solid waste leachate. Ozean J Appl Sci 4(1):7–25
3. Adamu CI, Nganje TN, Aniekan E (2015) Heavy metal contamination and health assessment associated with abandoned barite mines in Cross River State, southeastern Nigeria. Environ Nanotechnol Monit Manag 3:10–21
4. Adejumo RO, Adagunodo TA, Bility H, Lukman AF, Isibor PO (2018) Physicochemical constituents of groundwater and its quality in crystalline bedrock, Nigeria. Int J Civ Eng Technol 9(8):887–903 ISSN 0976-6308; 0976-6316
5. American Public Health Association (1998) Standard methods for the examination of water and wastewater, 20th edn. APHA, AWWWA, WEF, Washington