The leather processing industry is one of the industries with a high production level to meet market demand. This leather apparel company located in Garut, West Java, produces leather, both from cow, sheep, and goatskin as its raw material and manufactures leather-based apparel as its finished goods. Besides its primary production, this leather tanning company also produces hazardous wastewater that can pollute the environment due to chemical compounds in the leather tanning process. They do not have an integrated information system that supports their business processes, especially in controlling the waste management process. This research will design a waste management module ERP system that supports sustainable supply chain management. Using ERP will make it easier for companies to determine the amount of waste produced, recycled waste, disposable waste, and whether the wastewater meets the wastewater quality standards.