D3 Removing waste water safely

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Drains

Run water through all house drains to make sure that they are not blocked (1).
On the outside of the house, look for any signs of overflowing drains, and check for long grass in the garden that might indicate a water leak or failed drain.
Get a plumber to fix any drainage problems.
Check the grates (2) are in place on drains, and replace missing or broken grates
Check that there is a screened cap on the top of all vent pipes; replace missing caps
Check the grate is in place on the overflow relief gully; replace if missing
If there is a grease trap, empty it out regularly and check it is not overflowing
If there is a septic system (3), organise for it to be pumped out at least once a year; check the lid (4) and inspection openings are in place on the tank, and that traffic cannot drive over the trenches (5).
Check that caps are fitted on all inspection openings (6) and replace any missing caps
Check that there are drains or splashpads under yard taps (7) and downpipes; if not, arrange to install them where required.
Undertake regular maintenance on package treatment systems or composting toilet systems, as recommended by the supplier.

Undertake a full test of the drainage system and fix any blockages or leaks.
Test to ensure stormwater is not connected to the wastewater disposal system.
Undertake scheduled trades maintenance on package treatment systems or composting toilet systems, in accordance with manufacturer’s instructions.