The Monroe Township Landfill covers 86 acres in Monroe Township, Middlesex County, New Jersey. The landfill operated from 1955 to June 1978, when the State closed it because a colored leachate was seeping from the site. The seepage forced the abandonment of a nearby housing construction project.
Hydrochloric acid is known to have been disposed of at the site.
In 1979, the State obtained a court order against the landfill owners to correct the seepage. A site closure plan is nearing completion. The description may change as additional information is gathered on the sources and extent of contamination.