Plumbing

Plumbing Work by Contractors


Generally, permits are not required for the replacement of existing plumbing fixtures, except for water heaters and testable backflow devices.

The following plumbing work may require a permit:
  • Water, drainage and vent piping above grade that will not be concealed
  • First time installation of plumbing fixtures on new or existing rough-ins
  • Installation of non-testable double check valve backflow devices
  • Gasfitting
  • Installation or replacement of water heaters
  • Installation of water piping and meter rack associated with WSSC meter settings
  • Replacement or repair of water or sewer services
  • Any other work not specifically allowed by WSSC regulations
Questions regarding plumbing work should be referred to the WSSC Service Applications and Records Section at 301-206-4003.

Applying
For applicable forms, visit the Forms and Checklists page.