Rainwater Harvesting Systems

Image of a roof and gutter labeled "Rainwater Harvesting"

Did you know that you can use rainwater for your household needs? 

Why use rainwater? 

  • It eases demands of public treatment works and water supply systems 
  • It promotes conservation 

The Virginia Rainwater Harvesting System Regulations become effective November 20, 2024. 

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FAQs for Designers and Installers

Rainwater Harvesting System Registration

Q: Who is required to register an RHS with VDH?

A: The Owner of the RHS has the responsiblity to register the RHS; however, nothing in the Rainwater Harvesting System Regulations prevents an owner or installer from registering the system on behalf of the owner.

Q: What RHS must be registered?

A: All Tier 1, Tier 2, and Tier 3 RHS that become operational or modified on or after November 20, 2024, must ge registered within 30 days of entering service.  "Modified" means an alteration of the system which changes the capacity ot End-Use Tier(s).

Q: Is there a requirement to register RHS which became operational prior to November 20, 2024?

A: VDH does not require registration of RHS which became operational prior to November 20, 2024, but does encourage owners to voluntarily register them. In the event that a pre-existing RHS becomes modified, the modifications will need to be registered.  "Modified" means an alteration of the system which changes the capacity ot End-Use Tier(s).

I own/operate an RHS that predates the regulations and does not fully comply with the Regulations. Do I need to modify the RHS to comply with the Regulations?

Not so long as the system is functioning as designed. However, any alteration of the system which changes system capacity or End-Use Tier(s) is required to comply with the regulations.

How do these Regulations integrate with the Uniform Statewide Building Code?

The primary purpose of the Rainwater Harvesting System Regulations is to provide clarity regarding design standards, post-treatment water quality, and system operation and maintenance. These regulations address certain plumbing and electrical matters as a point of reference. If there is a conflict between these regulations and the Uniform Statewide Building Code with respect to construction standards, the USBC prevails.

Last Updated: October 16, 2024