Before work begins
- Confirm the responsible municipality and permit type.
- Prepare the valve location and plumbing scope.
- Complete any required pre-approval or technical review.
- Arrange utility locates before exterior excavation.
During installation
Do not cover the valve or complete final restoration until the required inspection is accepted.
After inspection
Keep the permit, approval, invoice, photos and maintenance information with the property records.
Questions
Can I install or service the valve myself?
Backwater-valve installation is regulated plumbing work and should be performed through the appropriate qualified and licensed contractor. Homeowner maintenance should follow the manufacturer instructions and local safety guidance.
How often should the valve be checked?
Follow the manufacturer instructions and local guidance. Some authorities recommend inspection every three months, while other programs recommend at least annual or pre-storm checks.
What if I cannot find the access?
Do not assume the valve is maintenance-free. A plumber or drainage contractor can help locate the device and determine whether the access has been covered or removed.