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- Drainage across London, with plumbing alongside
West Drayton sits in the Colne valley on gravel, between the river, the Grand Union Canal and old flooded gravel pits, and the ground can be very wet.
The gravel here holds water and the ground sits low, so the water table can be high, particularly in winter. That is a useful thing to know about drainage in UB7. A drain with an open joint below the water table takes groundwater in continuously, which means it runs part-full even when nothing is being discharged, loses the velocity that would normally keep it scoured, and fills with fine silt. It can look like a drain that keeps blocking for no reason, and clearing it again will not hold while water is still getting in. Sealing the defect is what fixes it.
Harmondsworth and the streets against the airport boundary add large areas of hardstanding that shed water quickly into a system that has nowhere fast to send it. Elsewhere, Yiewsley and West Drayton’s older centre are conventional Victorian and interwar stock on clay pipework, with the joint and root problems of their age, and the newer estates run on plastic that fails at couplings or sags where it was poorly bedded.
Groundwater can get in through open joints, so the drain does not run clean.
Fine silt returning again and again is infiltration, not something being put down the drain.
Large hardstanding areas near the airport boundary shed water into a system with little capacity in reserve.
This page covers West Drayton, Yiewsley and Harmondsworth (UB7). If your postcode is on the edge of this area, call and ask rather than assuming.
Call and speak to the engineer. 24 hours a day, including tonight.
Sinks, toilets, gullies and main drains cleared, with the cause identified rather than guessed.
Overflowing gullies and blocked manholes or inspection chambers, cleared and explained.
Toilets that will not flush, or that fill up and will not drain, cleared without damaging the pan or the soil pipe.
Kitchen sinks and waste pipes blocked with grease, cleared properly rather than just poked through.
Standing water in the bath or shower tray, and slow bathroom basins, cleared at the cause.
Sewage backing up, drains overflowing, or a home or business you cannot use until it is fixed. Phone answered 24/7.
Scours grease, silt, scale and roots off the pipe wall, rather than just making a hole through the blockage.
See the inside of the pipe: recurring blockages, pre-purchase checks, insurance and subsidence claims.
Cracked joints, root damage and collapsed sections, repaired without digging where the pipe allows.
Restaurants, pubs, offices, landlords and managing agents: planned maintenance and out-of-hours call-outs.
Leaks, taps, traps, toilet cisterns and waste pipes: the plumbing that often comes with a drainage job.
Common questions about drainage in West Drayton, answered for the kind of property you find there.
On ground like this it is often groundwater rather than misuse. The ground is gravel, the water table is high, and a joint that has opened below it lets water into the pipe continuously. The drain sits part-full, stops self-cleansing and silts. A camera survey will find the defect, and sealing it is what breaks the cycle. Clearing it a fourth time will not.
You cannot lower the water table, but you can stop it getting into your drain. Patch lining seals the specific joint or crack letting it in, which restores normal flow and stops the silting. It is done from existing chambers, so it does not mean digging up a garden that is already wet.
Call and speak to the engineer, 24 hours a day, including tonight.
