Abstract
The aim of this study was to evaluate the exposure levels of ELF magnetic fields in the residential areas ofMangaungmetropolitanmunicipality.FifteenresidentialsiteswererandomlyselectedinBloemfontein,nine in Botshabelo and six in Thaba Nchu areas of Mangaung. Measurements were collected at the distances of 3 m, 6 m and 9 m outside electrical substations, near every corner, usingaTrifieldmetermodelXE100.Measurementswere also collected from four different corners inside substations, near barrier screening and were referred to as a distance of 0 m (reference point). The results indicated a non-significant difference among 15 residential areas; BRE1 to BRE15 and six areas; TNRE1 to TRNE6. The exposure levels were significantly high in one residential area BORE1 (0.55 μT) as compared to other residential sites in Botshabelo ( p<0.001). The results obtained from the measurements also show a significant difference betweentheresidentialareasBORE4andBORE8(p<0.01) as well as BORE4 and BORE9 (p<0.006). The four distance interims also demonstrated a highly significant.