The prevalence of gastrointestinal parasites in major dumpsites and health risk behaviour of scavengers in Port Harcourt metropolis was investigated. Eight dumpsites were randomly selected for the study and 40 samples of soil and household waste material were collected from the dumpsite into sterile containers respectively. The samples were examined and parasites concentrated using zinc sulphate floatation technique. The results showed that a total of 39 parasite species belonging to 5 genera and 16 parasites species belonging to 3genera were isolated from the soil and household waste samples respectively. The parasites isolated from the soil samples included Ascaris lumbricoides (28.2%), Entamoeba histolytica (5.1%), Hookworm (28.2%), Strongyloides stercoralis (35.9%) and Sarcocytis sp (2.6%) while A. lumbricoides (18.8%), Hookworm (31.3%) and S. stercoralis (50.0%) were extracted from the waste samples. The soil samples had high abundance of parasites (70.9%) than the household waste samples (29.1%). The most significantly (P<0.05) abundant parasites was S. stercoralis while sites 1 and 4 recorded a statistically significant (P<0.05) abundance of parasites. Majority of the scavengers neglect the use of safety cloth and cover shoes while a statistically significant number of the scavengers do not hand glove (100%), nose mask (89%), visit the hospital only when sick (71%). The study revealed a significant abundance of gastrointestinal parasites in the dumpsites and high health risk behavior by scavengers in the study area. Deliberate formulation of scientific waste management policies to enhance performance, education of scavengers and execution of relevant legislation will go a long way to cub the impact of these parasites on public health.