Heavy metals are excessively released into the environment because of technological development and urbanization. This has resulted in contaminating groundwater and water bodies (ponds, streams, rivers) hence, are becoming threats to human health. Thus, assessment of heavy metals, was carried out on tigernut juice samples sold in some parts of Port Harcourt, Nigeria. Its food risk was assessed with blow fly maggots, as toxicological specimens. Fresh Tigernut juice samples were purchased from vendors in Port Harcourt, and a manually processed sample in a Laboratory at University of Port Harcourt, were used for the study. The method described by Belewu and Abodunrin (2008), was adopted to process the tigernut juice sample. The samples were filtered after decantation and subjected to atomic absorption spectrophotometer for heavy metals assessment. Blow fly maggots cultured on cow liver-tigernut juice samples, were used for toxicological assessment by adopting the method of Abajue and Ewuim (2020). Heavy metals (arsenic, cadmium, chromium, copper, cobalt, lead, mercury and nickel) assessed in the tigernut juice samples, showed that nickel and arsenic were negative in all the samples irrespective of their source of collection. Except for mercury that was slightly higher than few permissible limits, other heavy metals were lower than the permissible limits of national and international regulatory organizations. Entomotoxicology assessment showed that the heavy metals which were present in the tigernut samples, were absent in the blow fly maggots. The food safety of tigernut juice was discussed, while transient appreciation for posing no food risk was as well highlighted.