Rain Barrels: Design Criteria & Requirements for RainScapes Rewards Rebates

Download a printable version of requirements (PDF)

• Required supporting documents

  • Location plan (with graphic scale); indicate foundation area
  • HOA approval letter, if applicable

• Minimum size

  • Minimum size for entire project: 200 gallons (100 gallons for townhomes)
  • Minimum barrel size: 50 gallons

• Location

  • On private property
  • Above ground
  • Installed on a solid, level support base that is designed to hold the weight of the water harvesting system when full
  • Set away from window wells so that they can't overflow into a window well
  • Overflow must drain onto a pervious surface (grass, garden, etc.) or back into the downspout
  • Overflow drainage outlet must be directed at least 4 feet away from the building’s foundation, or use an inline diverter system that redirects overflow back into the downspout. Note: inline diverters should be level with the entry point into the barrel.
  • Positive overflow drainage away from foundation
  • Overflow must not change the pre-existing flow path of stormwater

• Design/Installation

  • If re-purposing a barrel, it needs to be food grade
  • Should have secure lid and/or screen
  • Should have water spigot at the bottom of the barrel for releasing water
  • Should be made of hard plastic or a metal tank designed for water; no bags
  • Overflow pipe must be directed onto either a splash block that diverts water away from the foundation or into a densely vegetated, non-erodible, or otherwise protected surface.
  • Clear access for cleaning the inlets when necessary

• Final steps

  • Submit itemized receipts (tax will be subtracted).
  • Electronically sign and submit the Property Owner Agreement.
  • Schedule and pass final inspection.