Chemometric analysis for pollution source identification and human health risk assessment of water resources in Ojoto Province, southeast Nigeria

摘要: This paper quantified the level of heavy metals contamination, identified possible sources pollution, and assessed human health risks associated with drinking water resources in Ojoto Province, Nigeria. The study’s gross findings revealed that suitability some for consumption purposes this province is questionable. Based on quality index, 57.14% total samples are within acceptable limits, while 42.86% unsuitable drinking. It was observed northwestern southern parts study area have more deteriorated quality. hazard index 25% predispose their consumers (both adult children populations) to high chronic risks. Moreover, metal pollution contamination probability cancer risk (CR) about were off CR standard range of ≤ 1 × 10−6–1 × 10−4. Correlation component factor analyses linked origin major ions geogenic processes both natural anthropogenic processes. Cluster analysis divided into two equal classes (50% each): poor excellent waters. indicated Pb priority pollutant impacting various assessments waters from hand-dug wells deeper boreholes least contaminated hence best suited than springs, streams, shallow wells.