The District of Columbia Stormwater Control Ordinance (DISCO) is a regulatory framework established by the District of Columbia government to manage stormwater runoff within the city. It aims to prevent pollution and protect the health of rivers and streams. The DISCO sets specific requirements for controlling stormwater runoff through the implementation of Best Management Practices (BMPs). These BMPs include structural and non-structural measures that help minimize the impacts of stormwater on water bodies and infrastructure. One type of District of Columbia Stormwater Control Ordinance is the Post-Construction Stormwater Management (PCs) Regulations. These regulations focus on managing stormwater runoff from new development and redevelopment projects. They require property owners to incorporate stormwater management practices into their site design and construction plans. The PCs regulations promote the use of green infrastructure, such as rain gardens, permeable pavements, and green roofs, to retain and treat stormwater on-site. Another type of District of Columbia Stormwater Control Ordinance is the Stormwater Management Guidebook. This guidebook provides detailed technical guidance for implementing the stormwater management requirements specified in the DISCO. It outlines design principles, criteria, and procedures that developers, engineers, and architects must adhere to when designing stormwater management systems. The District of Columbia Stormwater Control Ordinance also includes the Stormwater Retention Credit (SRC) Program. This program allows property owners to earn and trade stormwater retention credits by implementing stormwater management practices that exceed regulatory requirements. The credits can be sold to developers with projects that require additional stormwater management capacity, providing an economic incentive for property owners to invest in sustainable stormwater infrastructure. Overall, the District of Columbia Stormwater Control Ordinance plays a crucial role in ensuring the sustainable management of stormwater runoff and protecting the water quality in the district's rivers and streams. It promotes the use of innovative stormwater management techniques, fosters green infrastructure development, and encourages cooperation between property owners, developers, and governmental authorities to achieve effective stormwater control.