NATA-Certified leak testing for new pipelines
Vacuum or air testing is a precise, non-invasive method used to verify the structural integrity and water-tightness of newly installed sewer pipelines. The process detects leaks caused by faulty joints, missing seals, or construction damage, ensuring pipelines are secure and reliable.
All testing is carried out in accordance with Section 73 requirements and Sydney Water-certified procedures, providing clear, compliant documentation for regulatory approval. By identifying issues before final handover or commissioning, vacuum and air testing guarantees that your sewer system is fully compliant and ready for operation.
Each open end of the pipeline is securely plugged, and either air is pumped in or vacuum pressure is applied. Once the system reaches approximately ±27 kPa, it stabilises for three minutes before timing begins. Technicians then measure the pressure drop to ±23.6 kPa, and record how long it takes to reach the ±7 kPa, comparing results against benchmarks in the WSA 02-2002-2.2 Sewage Code of Australia (Sydney Water Edition 1, Version 4).
What the Test Detects
- Leaks resulting from cracked or misaligned joints
- Missing or defective seals that compromise water-tightness
- Structural breaches that allow soil contamination or water ingress
- Construction faults prior to final connection and handover
Testing Procedure
- Seal all open ends of the pipeline to prepare for testing
- Apply either vacuum or air pressure to approximately ±27 kPa
- Allow pressure to stabilise for three minutes to ensure accurate measurement
- Measure the time taken for pressure to drop to ±23.6 kPa, then to approximately ±7 kPa
- Compare recorded results against the WSA 02-2002-2.2 Sewage Code of Australia standards to confirm compliance
Key Benefits
- Meets Sydney Water technical specifications and Section 73 requirements
- Provides NATA-accredited assurance of pipeline quality [Click here to view our certification.]
- Identifies defects early, avoiding costly repairs, environmental impact, or operational delays
- Supports regulatory compliance with councils, utilities, and project authorities
- Ensures long-term reliability and safety of sewer infrastructure
