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Cross-connection control and backflow prevention assemblies protect drinking water by preventing contaminated water from reversing flow and entering the customer's system and possibly the public drink...

WSSC Water has the longest active AFO system in the United States

We're always open to new materials and products that can help us serve you better. But first they need the approval of our "MEP" team.

Learn more about water service lines.

WSSC Water is committed to protecting our drinking water sources – the Potomac and Patuxent rivers – and the surrounding land, or watersheds. In fact, all people who live, work and play in the watersh...

Homeowners and government, state, and utility projects with construction in the vicinity of WSSC Water's existing easements/infrastructure or that impact our water or sewer mains will n...

WSSC Water's "BIG" program has a big goal: to promote economic development in the communities we serve.

Essential information for cross-connection technicians, licensed plumbers and trainers/instructors of cross-connection/backflow prevention certification programs.Find details on backflow training, tes...