Back flow Prevention Assembly and Testing Requirements
Residential
A backflow prevention assembly is required on lawn irrigation systems.
A backflow prevention assembly may be required on certain types of residential businesses.
Commercial
A backflow prevention assembly is required on lawn irrigation systems.
A backflow prevention assembly is required for certain types of businesses.
Testing
It is required by law that all backflow assemblies be tested annually. Public Law 99-399-Safe Drinking Water Act Amendments of 1996 10 CSR 60-11.010.
If you are moving into new construction, please send us a copy of the initial Backflow
Prevention Assembly Test Data.
All backflow prevention assemblies must be tested annually and a copy of the Backflow Prevention Assembly Test Data sent to our office.
If you have any questions concerning backflow prevention assembly requirements, please contact our office at 636-467-6868.
Relevant Documents
- DNR – Backflow Prevention ( PDF / 4,431 KB )