Plumbers, Cross-Connection Technicians, & Instructors

Quick Links

• WSSC Water Plumbing and Fuel Gas Code
  Professionals should refer to the Code when making design, installation and maintenance decisions. This comprehensive document covers applications, testing, backflow prevention and more.
• List of Certified Instructors
• List of Cross-Connection Approved Firms
  WSSC Water has validated their licensing credentials but does not endorse these firms. 
• Backflow and Hose Bibb Tag Information
  For Non-Testable Devices (Rebuild/Replace Every 5 Years)

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 Certification

Existing Master Plumbers and Journeyman Plumbers, or someone seeking those licenses, must obtain their training and certification from an approved instructor. 

First Time Cross-Connection Technicians

• Requires a minimum of a 32-hour course
• Certification is good for three years

Recertification

• Must complete an 8-hour course
• Recertification is good for three years

Grace Periods Not Permitted 

WSSC Water’s automated backflow tracking system does not permit for any grace period. You must be current with your certification and registered with the WSSC Water licensing department in order to submit test reports. 

What to do When Certification Lapses

• Recertification must be obtained within 12 months of expiration
• If not, you must complete the full 32-hour course to re-register

Backflow & Hose Bibb Tags

Available Tags

• Testable
• Non-testable
• Hose bibb tags

How to Obtain Tags

1. Registered firms can print their own tags, if the printed document tag meets the Code requirements. 
2. WSSC Water will print tags for you. Registered firms can pick them up. See instructions here.

Need to Contact Us?

• Montgomery County: (301) 206-7932
• Prince George's County: (301) 206-8601
• General Cross-Connection Program Support: (301) 206-4004

Related Links

• Cross-Connection Test Reporting Clarifications
• Updates and Selected Best Practices
• Backflow Prevention Assembly Test Report (for field use only)