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.