Assessment of water quality for suitability and human health risk: a study of the Owan River, Edo State, Nigeria

IF 1.1 4区 环境科学与生态学 Q3 MARINE & FRESHWATER BIOLOGY
N. Egun, I. Oboh
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引用次数: 2

Abstract

Suitability assessment of water bodies for human consumption and its implication on human health is critical to water resources utilisation and sustainable development. This study investigated the water quality of the Owan River and the potential health risk to users. Examined physico-chemical parameters were within the Nigerian National Environmental Standards and Regulation Enforcement Agency permissible limits, except for the lead concentration. Water quality index values (Water Quality Index: 84.50–316.20) indicated that surface water from the sampling locations were of poor quality and unsuitable for drinking (Water Quality Index: > 50). The comprehensive pollution index values (Comprehensive Pollution Index: 0.31–0.57) indicate the water is sub–clean to slightly polluted. Evaluated non–carcinogenic risk to human health showed that children in the receptor population were predisposed to risk from heavy metals through oral ingestion (Oral Hazard Index: > 1), while the water was safe for dermal contact (Dermal Hazard Index: < 1) for adults and children. Integrated carcinogenic risk values classified the surface water as Grade IV (Medium risk), with cadmium having the highest carcinogenic risk. Cadmium accounted for approximately 94% of the total carcinogenic risk and hence a concern for public health. Natural runoff and anthropogenic activities were identified as sources of pollutants within the watershed. The study has provided data for water resource quality monitoring and public health management.
评价水质的适宜性和人类健康风险:对尼日利亚埃多州奥万河的研究
对供人类使用的水体的适宜性及其对人类健康的影响进行评估,对水资源利用和可持续发展至关重要。本研究调查了Owan河的水质及其对使用者的潜在健康风险。除铅浓度外,经检查的物理化学参数均在尼日利亚国家环境标准和法规执行局允许的范围内。水质指数值(水质指数:84.50–316.20)表明,采样地点的地表水质量较差,不适合饮用(水质指数>50)。综合污染指数值(综合污染指数:0.31–0.57)表明水质为亚清洁至轻度污染。评估的对人类健康的非致癌风险表明,受体人群中的儿童容易通过口服摄入重金属(口腔危害指数:>1),而成人和儿童的水对皮肤接触是安全的(皮肤危害指数:<1)。综合致癌风险值将地表水归类为IV级(中等风险),其中镉的致癌风险最高。镉约占总致癌风险的94%,因此引起公众健康的关注。自然径流和人为活动被确定为流域内的污染物来源。该研究为水资源质量监测和公共卫生管理提供了数据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
African Journal of Aquatic Science
African Journal of Aquatic Science MARINE & FRESHWATER BIOLOGY-
CiteScore
3.90
自引率
7.10%
发文量
31
审稿时长
>12 weeks
期刊介绍: The African Journal of Aquatic Science is an international journal devoted to the study of the aquatic sciences, covering all African inland and estuarine waters. The Journal publishes peer-reviewed original scientific papers and short articles in all the aquatic science fields including limnology, hydrobiology, ecology, conservation, biomonitoring, management, water quality, ecotoxicology, biological interactions, physical properties and human impacts on African aquatic systems.
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