Windsor Water Services

Frequently asked questions

Who supplies the water in Windsor?

Thames Water supplies Windsor. You can reach them on 0800 316 9800.

I can see water leaking in the road — who do I tell?

Report it to Thames Water on 0800 316 9800. Leaks in the road or pavement are on the public network, which is theirs to fix — anyone can report one, and it costs nothing.

I have no water — what should I do?

Check with a neighbour first. If they have no water either, the problem is likely on the mains — call Thames Water on 0800 316 9800. If it is only your property, check your internal stop tap is fully open; if it is, the fault may be on your own supply pipe — the part we repair and replace.

Who handles sewerage and drains in Windsor?

Thames Water handles both the water supply and the wastewater in Windsor, so it is one company for both. The drains inside your property boundary are the owner's responsibility — that is the work we do.

Is the water hard or soft in Windsor?

Windsor's water is hard, and the risk of limescale in kettles and boilers is high. A filter or softener can help — see our water filter guide for Windsor.

Which nearby towns do you also cover?

As well as Windsor, we cover the surrounding area, including Slough (2 miles), Staines-upon-Thames (5 miles), Maidenhead (6 miles), Ascot (6 miles), Uxbridge (7 miles) and Hillingdon (8 miles).

Which postcodes does Windsor cover?

The Windsor area covers SL4, SL1, SL3, SL2, TW20, SL0, TW19, TW18, SL6, GU25, UB7 and SL5.