NCCER Installing and Testing DWV Piping (02204) Plumbers and apprentices installing drain-waste-vent systems in residential and commercial buildings rely on this credential to demonstrate competency in critical DWV fundamentals. The exam covers slope calculations, trap seals, and vent stack configurations? core concepts that separate journeyperson work from mistakes that cause backups and code violations. Ideal for trade professionals moving from entry-level to independent installation work.
| Exam Name | NCCER Installing and Testing DWV Piping |
| Exam Code | 02204 |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
