Natural Resources Wales
Natural Resources Wales guidance says only clean water should enter surface-water drains.
Read the source →Wales, Wales
For driveway cleaning in Swansea, begin with surface type, approximate area, vehicle access, oil marks and drainage. One consistent brief lets responding providers price the same job instead of making different assumptions.

The Swansea brief
Focus on surface type, approximate area, vehicle access, oil marks and drainage. The key comparison is whether re-sanding, stain treatment or sealing is part of the request or a separately priced option.
Evidence before method
These sources support the planning questions on this page. They do not prove that a particular method suits an unseen property.
Natural Resources Wales guidance says only clean water should enter surface-water drains.
Read the source →HSE guidance explains that biocidal products must be authorised for the intended use and used in line with their label.
Read the source →Questions for Swansea
Include the whole drive, its edges and drainage, plus close views of oil marks, organic growth, loose joints or existing surface damage.
Washom does not publish an unsupported Swansea average. Give each provider the same photographs, measurements, condition and access notes, then compare what each total includes.
No. Submit the driveway cleaning brief and Washom will check for suitable independent-provider options. Availability depends on the job and location.
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Share photographs, surface condition and access once. Washom will check suitable independent-provider options for this job.