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Drain, Waste & Vent (DWV) Test Report

A Drain, Waste & Vent (DWV) Test Report documents the water, air, or vacuum test of a rough-in drainage, waste, and vent system before it is concealed behind walls or floors. It records the test method, pressure or head height, hold duration, and pass/fail result.

IPC (International Plumbing Code) Section 312.2, state/local plumbing codesValid: One-off (no expiry)

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Sample DWV Test Report certificate

Sample Drain, Waste & Vent (DWV) Test Report certificate created with CertBox, showing the professional PDF layout with pipe material and test stage (rough-in/final), water test: head height and 15-minute hold, air test: 5 psi or 10 in hg for non-plastic piping, 15-minute hold

Sample DWV Test Report with fictional data. All personal details shown are fake.

What it covers

  • Pipe material and test stage (rough-in/final)
  • Water test: head height and 15-minute hold
  • Air test: 5 PSI or 10 in Hg for non-plastic piping, 15-minute hold
  • Vacuum test for plastic piping
  • Pass/fail result

Who needs a DWV Test Report?

General contractors
Plumbers
Building inspectors
Homeowners (for records)

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Frequently asked questions about DWV Test Report

How is a DWV system pressure tested?
Per IPC Section 312.2, a completed drain, waste and vent system is tested by water (each section filled to at least 10 feet above the highest fitting, held 15 minutes), by air for piping other than plastic (5 PSI or 10 inches of mercury column, held 15 minutes without adding air), or by vacuum for plastic piping. All three must show the system leak-free before it is concealed.
Can I air-test a plastic DWV system?
The IPC air test option applies to piping other than plastic. Plastic DWV systems use the water test or, since the 2021 IPC, an alternate vacuum test — useful where freezing temperatures make a water test impractical. Confirm which method your local jurisdiction accepts.

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