Pressure validation for watermain, fire main, and pressure sewer installations
Hydrostatic pressure testing is a controlled process used to confirm the integrity and leak resistance of new or modified pipelines. This testing is essential for verifying that watermain, pressure sewer, and fire main systems can withstand operational pressures, and is required for Section 73, Sydney Water, and council compliance.
The pipe section is first filled with potable water, and any trapped air is carefully removed. High-pressure water is then pumped in until the target test pressure—well above normal mains pressure—is reached. The line must maintain this pressure for a set duration, with any drop measured by the volume of water added during the hold period.
This procedure not only detects leaks but also evaluates the pipe’s tolerance under sustained pressure. Turbidity levels are also monitored to ensure water clarity meets standards. All results are documented in NATA-certified reports and compliant with WSA 03-2011–3.1 (Sydney Water Edition 2014).
Systems Tested
- Watermain networks
- Pressure sewer systems
- Fire mains and hydrant lines
- PVC, HDPE, and ductile iron pipelines
Key Benefits
- Confirms leak-free installation before commissioning
- Validates system strength under high pressure conditions
- Meets compliance requirements for infrastructure approvals
- Provides clarity and assurance for long-term performance
- Provides NATA-certified assurance of pipeline quality [Click here to view our certification.]
