Arlington Heights, IL Landscaping Rules: Rainwater Harvesting (2026)

Arlington Heights permits residential rainwater harvesting. Illinois enacted the Rainwater Harvesting Act in 2009, affirming the right of property owners to collect rainwater from rooftops. The Village does not require a permit for standard rain barrels (typically 50-65 gallons) connected to downspouts. Larger cistern installations may require a permit if they involve significant construction, plumbing connections, or structural modifications. Rainwater harvesting supports the Village's stormwater management goals by reducing runoff into the storm sewer system, which ultimately drains to Salt Creek and McDonald Creek. Both waterways have experienced flooding, making on-site stormwater retention a community priority. Rain barrels should be covered or screened to prevent mosquito breeding, which is a public health concern addressed by the Cook County mosquito abatement program. Collected rainwater is suitable for garden irrigation and outdoor use but is not approved for potable use without treatment. The Metropolitan Water Reclamation District of Greater Chicago promotes rain barrel use as part of its stormwater management outreach. Some community groups and environmental organizations in the area periodically offer discounted rain barrels.