This study assesses the concentrations of trace elements in groundwater from Kara, focusing on their implications for water quality and health risks. Groundwater samples were collected and analyzed during the dry and post-monsoon seasons for pH, TDS, and trace metals using standard methods and for calculating pollution indices and noncarcinogenic and carcinogenic risks. Groundwater was found to be fresh but more acidic during the dry season. Only As, Pb, Sb, Fe, and Mn exceeded acceptable limits in some samples, highlighting potential health risks. Based on the heavy metal pollution index, groundwater is unsuitable for domestic purposes for 16.67% and 4.17% of samples in dry and post-monsoon seasons, respectively. According to the degree of contamination, 37.5% in the dry season and 20.8% in post-monsoon fell in high pollution classes. Most samples presented a hazard index above the unity for the resident children and adults. Carcinogenic risk assessment scores exceeded 10 to 100-fold higher than the safe point of 10-6. Adequate access to treated and safe drinking water and regular monitoring are essential to mitigate these risks in the Kara region.
Published in | American Journal of Environmental Protection (Volume 13, Issue 5) |
DOI | 10.11648/j.ajep.20241305.15 |
Page(s) | 163-174 |
Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Arsenic, Health Risks, Lead, Pollution Indices, Togo, Urban Groundwater, Water Quality
[1] | WHO, 2022, Guidelines for Drinking-Water Quality: Fourth Edition Incorporating the First and Second Addenda, World Health Organization. |
[2] |
Wexler, P., 2024, Encyclopedia of Toxicology [9 Volume Set], Academic Press, Elsevier. [Online]. Available:
https://www.sciencedirect.com/referencework/9780123864550/encyclopedia-of-toxicology [Accessed: 29-Apr-2024]. |
[3] | Mitra, S., Chakraborty, A. J., Tareq, A. M., Emran, T. B., Nainu, F., Khusro, A., Idris, A. M., Khandaker, M. U., Osman, H., Alhumaydhi, F. A., and Simal-Gandara, J., 2022, “Impact of Heavy Metals on the Environment and Human Health: Novel Therapeutic Insights to Counter the Toxicity,” Journal of King Saud University - Science, 34(3), p. 101865. |
[4] | Prasad Ahirvar, B., Das, P., Srivastava, V., and Kumar, M., 2023, “Perspectives of Heavy Metal Pollution Indices for Soil, Sediment, and Water Pollution Evaluation: An Insight,” Total Environment Research Themes, 6, p. 100039. |
[5] | Ibrahima, M., Moctar, D., Maguette, D. N., Diakher, M. H., Malick, N. P., and Serigne, F., 2015, “Evaluation of Water Resources Quality in Sabodala Gold Mining Region and Its Surrounding Area (Senegal),” Journal of Water Resource and Protection, 07(03), pp. 247-263. |
[6] | Kumar, V., Parihar, R. D., Sharma, A., Bakshi, P., Singh Sidhu, G. P., Bali, A. S., Karaouzas, I., Bhardwaj, R., Thukral, A. K., Gyasi-Agyei, Y., and Rodrigo-Comino, J., 2019, “Global Evaluation of Heavy Metal Content in Surface Water Bodies: A Meta-Analysis Using Heavy Metal Pollution Indices and Multivariate Statistical Analyses,” Chemosphere, 236, p. 124364. |
[7] | Moradnia, M., Attar, H. M., Hajizadeh, Y., Lundh, T., Salari, M., and Darvishmotevalli, M., 2024, “Assessing the Carcinogenic and Non-Carcinogenic Health Risks of Metals in the Drinking Water of Isfahan, Iran,” Sci Rep, 14(1), pp. 1-9. |
[8] | Ahoudi, H., Gnandi, K., Tanouayi, G., and Ouro-Sama, K., 2015, “Caractérisation Physico-Chimique et Etat de Pollution Par Les Élements Traces Métalliques Des Eaux Souterraines de Lomé (Sud Togo): Cas Du Quartier Agoe Zongo,” LARHYSS Journal ISSN 1112-3680, (24), pp. 41-56. |
[9] | Akpataku, K. V., Gnazou, M. D. T., Nomesi, T. Y. A., Nambo, P., Doni, K., Bawa, L. M., and Djaneye-Boundjou, G., 2020, “Physicochemical and Microbiological Quality of Shallow Groundwater in Lomé, Togo,” Journal of Geoscience and Environment Protection, 8(12), pp. 162-179. |
[10] | Kpiagou, P., Tchegueni, S., Boguido, G., Sama, D., Gnandi, K., Tchacondo, T., and Glitho, I., 2022, “Evaluation de La Pollution Des Ressources En Eau Du Bassin Versant de Didagou (Dapaong, Nord-Togo),” International Journal of Biological and Chemical Sciences, 16, pp. 481-497. |
[11] | Napo, G., Akpataku, K. V., Seyf-Laye, A.-S. M., Gnazou, M. D. T., Bawa, L. M., and Djaneye-Boundjou, G., 2021, “Assessment of Shallow Groundwater Quality Using Water Quality Index and Human Risk Assessment in the Vogan-Attitogon Plateau, Southeastern (Togo),” Journal of Environment Pollution and Human Health, 9(2), pp. 50-63. |
[12] | Bissang, B. T., Aragón-Barroso, A. J., Baba, G., González-López, J., and Osorio, F., 2024, “Integrated Assessment of Heavy Metal Pollution and Human Health Risks in Waters from a Former Iron Mining Site: A Case Study of the Canton of Bangeli, Togo,” Water, 16(3), p. 471. |
[13] | Segbeaya, K. N., Koledzi, K. E., Baba, G., and Feuilade-Cathalifaud, G., 2019, “The Impact of Household and Similar Solid Wastes on Kara River Quality Due to Their Potential to Release Nitrogen,” J. Environ. Chem. Ecotoxicol., 11(3), pp. 29-42. |
[14] | INSEED-Togo, 2023, Résultats Finaux Du 5e Recensement Général de La Population et de l’Habitat (RGPH-5) de Novembre 2022: Distribution Spatiale de La Population Résidente Par Sexe, Institut national de la statistique et des études économiques et démographiques, Lomé, Togo. |
[15] | Badjana, H. M., Fink, M., Helmschrot, J., Diekkrüger, B., Kralisch, S., Afouda, A. A., and Wala, K., 2017, “Hydrological System Analysis and Modelling of the Kara River Basin (West Africa) Using a Lumped Metric Conceptual Model,” Hydrological Sciences Journal, 62(7), pp. 1094-1113. |
[16] | Ani, M., 2023, “Fonctionnement Des Aquifères Des Socle Ouest-Africain Par Une Approche Combinée: Hydroclimatologie, Hydrogéologie, Hydrogéochimie - Application Au Bassin Versant de La Rivière Kara Au Nord Du Togo,” These de Doctorat, Université de Reims Champagne-Ardenne. [Online]. Available: |
[17] | Tairou, M. S., and Affaton, P., 2013, “Structural Organization and Tectono-Metamorphic Evolution of the Pan-African Suture Zone: Case of the Kabye and Kpaza Massifs in the Dahomeyide Orogen in Northern Togo (West Africa),” International Journal of Geosciences, 04(01), pp. 166-182. |
[18] | Rodier, J., Legube, B., Merlet, N., and coll., 2009, L’analyse de l’eau, Dunod, Paris, France. |
[19] | Mohan, S. V., Nithila, P., and Reddy, S. J., 1996, “Estimation of Heavy Metals in Drinking Water and Development of Heavy Metal Pollution Index,” Journal of Environmental Science & Health Part A, 31(2), pp. 283-289. |
[20] | Edet, A. E., and Offiong, O. E., 2002, “Evaluation of Water Quality Pollution Indices for Heavy Metal Contamination Monitoring. A Study Case from Akpabuyo-Odukpani Area, Lower Cross River Basin (Southeastern Nigeria),” GeoJournal, 57(4), pp. 295-304. |
[21] | Backman, B., Bodiš, D., Lahermo, P., Rapant, S., and Tarvainen, T., 1998, “Application of a Groundwater Contamination Index in Finland and Slovakia,” Environmental Geology, 36(1), pp. 55-64. |
[22] | USEPA, 1989, Risk-Assessment Guidance for Superfund. Volume 1. Human Health Evaluation Manual. Part A. Interim Report (Final), EPA/540/1-89/002, Environmental Protection Agency, Washington, DC (USA). Office of Solid Waste …. |
[23] |
USEPA, 2004, Risk Assessment Guidance for Superfund Volume I: Human Health Evaluation Manual (Part E, Supplemental Guidance for Dermal Risk Assessment) Final, EPA/540/R/99/005, OSWER 9285.7-02EP, PB99-963312. [Online]. Available:
https://www.epa.gov/sites/default/files/2015-09/documents/part_e_final_revision_10-03-07.pdf [Accessed: 12-Aug-2024]. |
[24] | USEPA, 2005, Guidelines for Carcinogen Risk Assessment, EPA/630/P-03/001F, U.S. Environmental Protection Agency, Washington, DC. |
[25] | OEHHA, 2024, Technical Support Document for Cancer Potency Factors 2009, Appendix A: Hot Spots Unit Risk and Cancer Potency Values. Updated April 2023, California Office of Environmental Health Hazard Assessment (OEHHA). [Online]. Available: |
[26] | Shaji, E., Santosh, M., Sarath, K. V., Prakash, P., Deepchand, V., and Divya, B. V., 2021, “Arsenic Contamination of Groundwater: A Global Synopsis with Focus on the Indian Peninsula,” Geoscience Frontiers, 12(3), p. 101079. |
[27] | Bello, S., Nasiru, R., Garba, N. N., and Adeyemo, D. J., 2019, “Carcinogenic and Non-Carcinogenic Health Risk Assessment of Heavy Metals Exposure from Shanono and Bagwai Artisanal Gold Mines, Kano State, Nigeria,” Scientific African, 6, p. e00197. |
[28] | Giri, S., Singh, A. K., and Mahato, M. K., 2020, “Monte Carlo Simulation-Based Probabilistic Health Risk Assessment of Metals in Groundwater via Ingestion Pathway in the Mining Areas of Singhbhum Copper Belt, India,” Int J Environ Health Res, 30(4), pp. 447-460. |
[29] | Sanusi, I. O., Olutona, G. O., Wawata, I. G., and Onohuean, H., 2024, “Heavy Metals Pollution, Distribution and Associated Human Health Risks in Groundwater and Surface Water: A Case of Kampala and Mbarara Districts, Uganda,” Discov Water, 4(1), p. 27. |
[30] | Nishad, P. A., and Bhaskarapillai, A., 2021, “Antimony, a Pollutant of Emerging Concern: A Review on Industrial Sources and Remediation Technologies,” Chemosphere, 277, p. 130252. |
[31] | Singha, S., Pasupuleti, S., Singha, S. S., and Kumar, S., 2020, “Effectiveness of Groundwater Heavy Metal Pollution Indices Studies by Deep-Learning,” Journal of Contaminant Hydrology, 235, p. 103718. |
[32] | Bhuiyan, M. A. H., Dampare, S. B., Islam, M. A., and Suzuki, S., 2014, “Source Apportionment and Pollution Evaluation of Heavy Metals in Water and Sediments of Buriganga River, Bangladesh, Using Multivariate Analysis and Pollution Evaluation Indices,” Environ Monit Assess, 187(1), p. 4075. |
[33] | De León-Gómez, H., Martin Del Campo-Delgado, M. A., Esteller-Alberich, M. V., Velasco-Tapia, F., Alva-Niño, E., and Cruz-López, A., 2020, “Assessment of Nitrate and Heavy Metal Contamination of Groundwater Using the Heavy Metal Pollution Index: Case Study of Linares, Mexico,” Environ Earth Sci, 79(18), p. 433. |
[34] | Sharma, K., Janardhana Raju, N., Singh, N., and Sreekesh, S., 2022, “Heavy Metal Pollution in Groundwater of Urban Delhi Environs: Pollution Indices and Health Risk Assessment,” Urban Climate, 45, p. 101233. |
[35] | Han, W., Pan, Y., Welsch, E., Liu, X., Li, J., Xu, S., Peng, H., Wang, F., Li, X., Shi, H., Chen, W., and Huang, C., 2023, “Prioritization of Control Factors for Heavy Metals in Groundwater Based on a Source-Oriented Health Risk Assessment Model,” Ecotoxicology and Environmental Safety, 267, p. 115642. |
[36] | Boum-Nkot, S. N., Nlend, B., Komba, D., Ndondo, G. R. N., Bello, M., Fongoh, E. J., Ntamak-Nida, M.-J., and Etame, J., 2023, “Hydrochemistry and Assessment of Heavy Metals Groundwater Contamination in an Industrialized City of Sub-Saharan Africa (Douala, Cameroon). Implication on Human Health,” HydroResearch, 6, pp. 52-64. |
[37] | Rupias, O. J. B., Pereira, S. Y., and De Abreu, A. E. S., 2021, “Hydrogeochemistry and Groundwater Quality Assessment Using the Water Quality Index and Heavy-Metal Pollution Index in the Alluvial Plain of Atibaia River- Campinas/SP, Brazil,” Groundwater for Sustainable Development, 15, p. 100661. |
[38] | Iordache, A. M., Nechita, C., Zgavarogea, R., Voica, C., Varlam, M., and Ionete, R. E., 2022, “Accumulation and Ecotoxicological Risk Assessment of Heavy Metals in Surface Sediments of the Olt River, Romania,” Sci Rep, 12(1), p. 880. |
[39] | Badeenezhad, A., Soleimani, H., Shahsavani, S., Parseh, I., Mohammadpour, A., Azadbakht, O., Javanmardi, P., Faraji, H., and Babakrpur Nalosi, K., 2023, “Comprehensive Health Risk Analysis of Heavy Metal Pollution Using Water Quality Indices and Monte Carlo Simulation in R Software,” Sci Rep, 13(1), p. 15817. |
[40] | Boateng, T. K., Opoku, F., and Akoto, O., 2019, “Heavy Metal Contamination Assessment of Groundwater Quality: A Case Study of Oti Landfill Site, Kumasi,” Appl Water Sci, 9(2), p. 33. |
[41] | Opasola, O. A., and Otto, E., 2024, “Evaluation of Heavy Metal Levels and Contamination Indices of Groundwater Sources in Kaduna South Local Government Area, Kaduna State, Northern Nigeria,” jasem, 28(6), pp. 1841-1852. |
[42] | WHO, 2018, A Global Overview of National Regulations and Standards for Drinking-Water Quality, World Health Organization, Geneva, Switzerland. |
[43] | Ayejoto, D. A., and Egbueri, J. C., 2024, “Human Health Risk Assessment of Nitrate and Heavy Metals in Urban Groundwater in Southeast Nigeria,” Ecological Frontiers, 44(1), pp. 60-72. |
[44] | USEPA, 2016, “Human Health Risk Assessment,” |
[45] | USEPA, 1992, Guidelines for Exposure Assessment, EPA/600/Z-92/001. |
[46] | Zakir, H. M., Sharmin, S., Akter, A., and Rahman, Md. S., 2020, “Assessment of Health Risk of Heavy Metals and Water Quality Indices for Irrigation and Drinking Suitability of Waters: A Case Study of Jamalpur Sadar Area, Bangladesh,” Environmental Advances, 2, p. 100005. |
[47] | Ahamad, A., Raju, N. J., Madhav, S., and Khan, A. H., 2020, “Trace Elements Contamination in Groundwater and Associated Human Health Risk in the Industrial Region of Southern Sonbhadra, Uttar Pradesh, India,” Environ Geochem Health, 42(10), pp. 3373-3391. |
[48] | Ramos, E., Bux, R. K., Medina, D. I., Barrios-Piña, H., and Mahlknecht, J., 2023, “Spatial and Multivariate Statistical Analyses of Human Health Risk Associated with the Consumption of Heavy Metals in Groundwater of Monterrey Metropolitan Area, Mexico,” Water, 15(6), p. 1243. |
[49] | Bretcan, P., Tanislav, D., Radulescu, C., Serban, G., Danielescu, S., Reid, M., and Dunea, D., 2022, “Evaluation of Shallow Groundwater Quality at Regional Scales Using Adaptive Water Quality Indices,” IJERPH, 19(17), p. 10637. |
APA Style
Akpataku, K. V., Dougna, A. A., Sodomon, A. K., Ani, M., Mande, S. A., et al. (2024). Groundwater Quality Assessment Using Pollution Indices and Human Health Risks Through Exposure to Trace Elements in the City of Kara, Togo. American Journal of Environmental Protection, 13(5), 163-174. https://doi.org/10.11648/j.ajep.20241305.15
ACS Style
Akpataku, K. V.; Dougna, A. A.; Sodomon, A. K.; Ani, M.; Mande, S. A., et al. Groundwater Quality Assessment Using Pollution Indices and Human Health Risks Through Exposure to Trace Elements in the City of Kara, Togo. Am. J. Environ. Prot. 2024, 13(5), 163-174. doi: 10.11648/j.ajep.20241305.15
AMA Style
Akpataku KV, Dougna AA, Sodomon AK, Ani M, Mande SA, et al. Groundwater Quality Assessment Using Pollution Indices and Human Health Risks Through Exposure to Trace Elements in the City of Kara, Togo. Am J Environ Prot. 2024;13(5):163-174. doi: 10.11648/j.ajep.20241305.15
@article{10.11648/j.ajep.20241305.15, author = {Kossitse Venyo Akpataku and Akpénè Amenuvevega Dougna and Agbessi Koffi Sodomon and Mozimwè Ani and Seyf-Laye Alfa-Sika Mande and Limam Moctar Bawa and Serigne Faye}, title = {Groundwater Quality Assessment Using Pollution Indices and Human Health Risks Through Exposure to Trace Elements in the City of Kara, Togo }, journal = {American Journal of Environmental Protection}, volume = {13}, number = {5}, pages = {163-174}, doi = {10.11648/j.ajep.20241305.15}, url = {https://doi.org/10.11648/j.ajep.20241305.15}, eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajep.20241305.15}, abstract = {This study assesses the concentrations of trace elements in groundwater from Kara, focusing on their implications for water quality and health risks. Groundwater samples were collected and analyzed during the dry and post-monsoon seasons for pH, TDS, and trace metals using standard methods and for calculating pollution indices and noncarcinogenic and carcinogenic risks. Groundwater was found to be fresh but more acidic during the dry season. Only As, Pb, Sb, Fe, and Mn exceeded acceptable limits in some samples, highlighting potential health risks. Based on the heavy metal pollution index, groundwater is unsuitable for domestic purposes for 16.67% and 4.17% of samples in dry and post-monsoon seasons, respectively. According to the degree of contamination, 37.5% in the dry season and 20.8% in post-monsoon fell in high pollution classes. Most samples presented a hazard index above the unity for the resident children and adults. Carcinogenic risk assessment scores exceeded 10 to 100-fold higher than the safe point of 10-6. Adequate access to treated and safe drinking water and regular monitoring are essential to mitigate these risks in the Kara region. }, year = {2024} }
TY - JOUR T1 - Groundwater Quality Assessment Using Pollution Indices and Human Health Risks Through Exposure to Trace Elements in the City of Kara, Togo AU - Kossitse Venyo Akpataku AU - Akpénè Amenuvevega Dougna AU - Agbessi Koffi Sodomon AU - Mozimwè Ani AU - Seyf-Laye Alfa-Sika Mande AU - Limam Moctar Bawa AU - Serigne Faye Y1 - 2024/10/31 PY - 2024 N1 - https://doi.org/10.11648/j.ajep.20241305.15 DO - 10.11648/j.ajep.20241305.15 T2 - American Journal of Environmental Protection JF - American Journal of Environmental Protection JO - American Journal of Environmental Protection SP - 163 EP - 174 PB - Science Publishing Group SN - 2328-5699 UR - https://doi.org/10.11648/j.ajep.20241305.15 AB - This study assesses the concentrations of trace elements in groundwater from Kara, focusing on their implications for water quality and health risks. Groundwater samples were collected and analyzed during the dry and post-monsoon seasons for pH, TDS, and trace metals using standard methods and for calculating pollution indices and noncarcinogenic and carcinogenic risks. Groundwater was found to be fresh but more acidic during the dry season. Only As, Pb, Sb, Fe, and Mn exceeded acceptable limits in some samples, highlighting potential health risks. Based on the heavy metal pollution index, groundwater is unsuitable for domestic purposes for 16.67% and 4.17% of samples in dry and post-monsoon seasons, respectively. According to the degree of contamination, 37.5% in the dry season and 20.8% in post-monsoon fell in high pollution classes. Most samples presented a hazard index above the unity for the resident children and adults. Carcinogenic risk assessment scores exceeded 10 to 100-fold higher than the safe point of 10-6. Adequate access to treated and safe drinking water and regular monitoring are essential to mitigate these risks in the Kara region. VL - 13 IS - 5 ER -