Customer Care & Operations
Cross-Connection Control Program
The DC Water Cross-Connection Control Program is responsible for inspection, regulation, enforcement and education in preventing backflow incidents in the District. A cross connection is a physical connection between the drinking water system and a non-potable source. Backflow occurs when an unprotected cross-connection allows the reverse flow of a non-potable substance into the water system, potentially contaminating or polluting the drinking water supply. The Cross Connection Control Program ensures proper backflow protection methods are used at cross-connections in the District to prevent contamination and protect public health.
For additional information about the Cross-Connection Control Program, contact the Drinking Water Division at 202-364-3144 or email firstname.lastname@example.org. Learn more about ensuring water quality in commercial buildings.
What can you find in this section?
Backflow Prevention Assemblies
Examples of backflow prevention assemblies
List of contractors certified to inspect, maintain and test backflow prevention assemblies
DC Water Cross-Connection Control Policy Manual
Cross-Connection Control Program policies and procedures
District of Columbia Cross-Connection Ordinance
Ordinance providing authority for inspection and enforcement of cross-connections in the District of Columbia
Frequently Asked Questions
Common questions about cross-connection control, backflow prevention assemblies and devices
- Official Test Forms