Rainwater Harvesting systems will be reimbursed at a rate of $4.00 per gallon of treated volume with a maximum payment of $20,000.00. The cost-share rate is applied to the 1 inch volume of runoff collected rounded up to the nearest gallon. When pre-treatment is required, the pre-treatment costs are included in the cost of the practice. Cisterns must be at least 250 gallons.
Rainwater harvesting systems intercept, store, and release rainfall for future use. Rely on the VCAP Manual for full specifications. Rainwater Harvesting includes the collection and conveyance of roof runoff into an above- or belowground storage tank where it can be reused or safely diverted to a receiving area for infiltration.
Rainwater harvesting provides an independent water supply during regional water restrictions and in developed countries is often used to supplement the main supply. It provides water when there is a drought, can help mitigate flooding of low-lying areas, and reduces demand on wells which may enable groundwater levels to be sustained. It also helps in the availability of potable water as rainwater is substantially free of salinity and other salts. Application of rainwater harvesting in urban water system provides a substantial benefit for both water supply and wastewater subsystems by reducing the need for clean water in water distribution system, less generated stormwater in sewer system, as well as a reduction in stormwater runoff polluting freshwater bodies.
NOTE: As of November 20, 2024, the Virginia Department of Health regulates Rainwater Harvesting. Please see the VDH web page on rainwater collection to learn more before proceeding with a VCAP Application for RWH.
Additional Photos of Completed VCAP Rainwater Harvesting BMPs:
