Since 1 July 2019, the Queensland Plumbing and Wastewater Code has required a site classification and soil test for new plumbing work on both new and existing projects. The change ensures that plumbing and drainage systems are designed to withstand the specific soil conditions of the site.
Why the Change?
Highly reactive soils (which shrink and swell significantly) can cause underground pipes to move, bend, or break. By requiring a soil test, plumbers and engineers can specify appropriate flexible joints, lagging, and bedding materials to prevent pipe failure and costly repairs.
When is it Required?
A soil test is now required for:
- All new dwellings.
- Extensions or additions that involve new underground drainage.
- Installing new on-site wastewater treatment systems.
How We Help
Express Soil Testing provides the necessary AS 2870 site classification reports required for plumbing approvals. If your project is in an unsewered area, we can also complete the required soil percolation testing and wastewater design in the same site visit, saving you time and money.