Munisport Landfill is a closed landfill located in North Miami, Florida adjacent to a low-income community, a regional campus of Florida International University, Oleta River State Park (a state recreational park), and estuarine Biscayne Bay.

Environmental Protection Agency (EPA) officials never detected dangerous levels of those in the landfill and concentrated their efforts on the mangrove preserve south of the site, where the chief concern was the seepage of ammonia, created naturally as organic debris decomposes.

Munisport Landfill comprises some 291 acres (1.18 km2), containing 6.2 million cubic yards (4.7×10^6 m3) of municipal, biohazardous, and industrial waste.

Natural soils in the landfill area had been removed prior to dumping, increasing the risk of pollution seepage, especially into the Biscayne Aquifer, a primary source for drinking water in South Florida.

When the EPA originally released its evaluation and report on the Munisport superfund site, it stated that the land should never be developed and that an impermeable "cap" should be placed on the area so that toxic chemicals could not potentially leak into the air, water and soil, as the impact on human and aquatic health were unknown.

The ASTDR Public Health report stated: Because the number of soil/fill samples is limited, we cannot determine the extent of contamination in the landfill portion of the site.

To identify industrial facilities that could contribute to the contamination near the Munisport Landfill site, we searched the 1987, 1988, and 1989 EPA Toxic Chemical Release Inventory (TRI) database.

The Public Health Assessment concluded: "Inhalation of contaminated dust is a past and future air exposure pathway.

The contamination in soil, sediments, surface water, and groundwater sampled and documented include: In the early 1990s Highland Park residents expressed concerns that contaminated soil and water at Munisport has exposed adjacent Highland Village mobile home park, population est.