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From testing to handover · California homes

System Testing & Final Inspection

Follow the checks that accompany a complete plumbing installation. Ten illustrated stages cover exposed-piping tests, finished-fixture operation, and preparation for the final inspection in a luxury home.

10Illustrated stages
01–03   Water-supply testing04–05   DWV & rough review06–09   Fixture checks10   Final inspection

The installation, step by step

Select any photo to view it larger.

Planning & water-supply testing

Test Planning & Equipment Preparation

The testing sequence is coordinated with the approved plans, piping materials, and local inspection requirements. Suitable equipment and closures are prepared before each system is isolated for its test.

Key consideration · Confirm the required method, test conditions, and inspection timing for the specific project.
Planning & water-supply testing

Water-Supply Pressure Testing

A water-filled test pump and connected gauge illustrate hydrostatic testing of an isolated copper supply branch. The piping is observed under the required test conditions while its accessible connections remain exposed.

Key consideration · Use the prescribed pressure and duration for the system and authority having jurisdiction; this image does not establish a test result.
Planning & water-supply testing

Supply-Joint Leak Checks

Accessible joints, fittings, and test closures are inspected for visible seepage during the testing process. Close visual checks help locate connections that need attention before the work is concealed.

Key consideration · Correct any defect and repeat the required test before proceeding to concealment.
Drainage testing & rough review

DWV Water-Test Preparation

Drainage piping is prepared for water testing with appropriate closures and an accessible test arrangement. The test height, section boundaries, and closures are verified before the system is filled and observed.

Key consideration · The complete test setup is outside this view. Plastic DWV piping must not be tested with compressed air.
Drainage testing & rough review

Rough Inspection Before Wall Closure

The exposed installation is reviewed at the required rough stage, when piping, supports, and connections can still be seen. Testing, required protection, and any corrections are coordinated before walls or other finishes cover the work.

Key consideration · Follow the local inspection sequence and obtain the required acceptance before concealment.
Finished-fixture & appliance checks

Fixture Flow, Drainage & Leak Checks

After fixture installation, water flow and drainage are observed under normal operation. Accessible supply connectors, shutoff valves, and drain joints are checked while water runs through the basin.

Key consideration · Fixture operation checks complement the earlier concealed-piping tests; both belong in the project sequence.
Finished-fixture & appliance checks

Shower Temperature & Control Check

The shower outlet temperature is checked with a contact probe in collected flowing water. The selected protective control is adjusted and checked according to its instructions and the applicable requirements.

Key consideration · Verify the shower control at the fixture; the water-heater thermostat alone does not provide the required shower protection.
Finished-fixture & appliance checks

Dishwasher Drainage & Air-Gap Review

The dishwasher installation is reviewed for its drain air gap and serviceable connections. The appliance is then operated through the appropriate checks, with the drainage route and accessible joints observed during discharge.

Key consideration · This view shows the air-gap review before operation. Complete the under-counter connection and operating checks as well.
Finished-fixture & appliance checks

Toilet Flush, Refill & Connection Checks

The installed toilet is checked through flushing and refill, with attention to normal operation and accessible connections. The supply connection, fixture stability, and surrounding floor are also reviewed for signs of leakage.

Key consideration · Complete any adjustment or correction and repeat the operating check before handover.
Final inspection & handover

Final Inspection Coordination

With the fixtures connected and operating, the completed work is made ready for the final inspection. Project information is available, service points remain accessible, and any remaining items are addressed with the local authority.

Key consideration · Final acceptance is issued by the authority having jurisdiction. This illustration shows coordination, not an inspection approval.

Planned for California projects

These AI-generated images illustrate testing and inspection stages; they are not photographs of completed Omega projects, recorded test results, or inspection approvals. Actual testing follows the applicable California Plumbing Code, approved plans, product instructions, and local requirements.

California code & project considerations
  • The 2025 California codes apply to permit applications submitted on or after January 1, 2026. Earlier permits may follow an earlier code edition.
  • Coordinate water-supply and DWV tests as separate operations using the methods and test conditions required for each system.
  • Plastic drainage, waste, and vent piping must not be tested with compressed air. Establish the required water-test setup and closures before testing.
  • Required rough tests and inspections take place while the relevant work remains exposed. Obtain the required acceptance before concealment.
  • Check finished fixtures and appliances under normal operation, including accessible connections, drainage, shutoffs, and applicable temperature protection.
  • A running fixture or a thermometer photograph does not establish that the installation passed its required tests or inspection.
  • Keep service points and required project information available for the final inspection; complete any corrections requested by the local authority.

Sources: California code effective date · San José testing requirements · Milpitas inspection sequence · San Bruno shower-control guidance

Service AreasExplore New Construction Plumbing

Omega Plumbing Inc. · Plumbing installation

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