Every effort aimed towards attainment and sustenance of Global Goal, SDG3-sound health and well-being is worth the while. Among all sources of background radiation exposure, eighty percent of the annual mean effective dose to man are due to naturally occurring radionuclides (NORs) and this could pose health threat. In order to make the living environment radiological safe for dwellers, it is needful to appraise the scale of exposure to habitat and man. This work appraised the scales of activities of natural radioisotopes in the environment, soil and sediment samples. The impact of NORs on the terrestrial and freshwater aquatic stations in LASU, Ojo LGA of Lagos State, Nigeria was assessed. Ambient gamma doses per unit time and specific activities of natural radioelements 40 238 232 K, U, Th were measured deploying mobile Radio Solution’s RS-125 gamma spectrometer while soil and sediment samples were analysed using Hyper-Pure Germanium HP(Ge) gamma detector.