Who it suits
- External drainage for homes and commercial properties
- Connections to a biological unit or public sewer
- New construction and system replacement
External sewerage connects the building outlet to a biological treatment unit, holding tank or public sewer. Reliable operation depends on correct pipe gradients and depth, inspection chamber placement and a suitable discharge arrangement.
Request a proposal
We establish the location, objective and available documents.
We assess ground conditions, equipment access and the proposed system.
We define scope, sequence and the factors that shape cost.
We carry out the agreed work and test the system.
A proposal follows a review of site data. Send the address and a short brief on WhatsApp.
Send the location and a short brief. We will respond with the information needed for the next step.


Too little gradient slows the flow, while excessive gradient can separate water from solids. Pipework is therefore installed to calculated level marks.
Yes. External sewerage carries wastewater from the building to the treatment unit, so both parts should be designed and installed as one system.
There is no long form to complete. Send the essentials on WhatsApp and we will help identify a sound next step.