Takoma Park, MD Landscaping Rules: Rainwater Harvesting (2026)

Maryland law permits rainwater harvesting for non-potable uses without a permit, and Takoma Park actively encourages the practice as part of its comprehensive stormwater management and environmental sustainability programs. Rain barrels collecting roof runoff for garden irrigation are common throughout the city. The city has offered subsidized rain barrel programs and workshops through its Public Works department and sustainability initiatives. Rain barrels help reduce stormwater runoff into the Sligo Creek watershed, which is a major environmental priority for the city. Larger cistern systems for residential use are also permitted but may require plumbing permits if connected to household systems. Rainwater collected for irrigation does not need to be treated. Using harvested rainwater for potable (drinking) purposes would require treatment systems meeting Maryland Department of the Environment standards, though this is extremely rare in an area with municipal water service from WSSC. The city's green infrastructure programs also promote rain gardens, permeable pavement, and bioretention facilities alongside rainwater harvesting.