Cross-Connection Control

The WSSC Water Cross-Connection Program focuses on preventing backflow and protecting Cross-Connections to keep the drinking water safe.

Preventing backflow - when water flows backward in your pipes - is the reason we started the Cross-Connection Control Program, which inspects buildings for unprotected or improperly protected cross-connections. And just what is a cross-connection, you ask? Keep reading for the explanation.

Test Reporting

Backflow assembly field test results must be submitted electronically through the WSSC Water Cross-Connection Test Report (CCTR) system—linked below. The user guide, also linked, is available as a user navigation tool. For any proposed modifications to the data presented by the CCTR system, please use this form. 

Cross-Connection test reporting site | View the reporting site user guide

Cross-Connection Frequently Asked Questions

If you have questions about cross-connections, we have answers loaded with important information you need to know.

Check These Cross-Connection FAQs

Cross-Connection and Backflow 101

Why do you even need to be aware of cross-connections, or know what backflow is? Because if they occur, there is a potential that the quality of your drinking water could be affected - and you don't want that.

Learn the Backflow Facts

Cross-Connection and backflow service providers

While homeowners can install some backflow prevention devices on their own, generally speaking, it's not a DIY project. Here's how to find a licensed company to help.

Find Cross-Connection Service Providers | Printable Backflow & Hosebib Tags

Need-to-Know Information for Commercial and Industrial Customers

Commercial and industrial customers need to be aware of cross-connection concerns, for example: Is a cross-connection a landlord's or a tenant's responsibility?

Get the Need-to-Know Information