Mill Hill Water Services

Frequently asked questions

Who supplies the water in Mill Hill?

Affinity Water supplies Mill Hill. You can reach them on 0345 357 2401. In parts of Mill Hill the supplier can vary street to street, so check your bill if you are not sure.

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

Report it to Affinity Water on 0345 357 2401. 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 Affinity Water on 0345 357 2401. 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 Mill Hill?

Your water comes from Affinity Water, but wastewater and sewerage in Mill Hill is handled by Thames Water — a separate company. The drains inside your property boundary are the owner's responsibility — that is the work we do.

Is the water hard or soft in Mill Hill?

Mill Hill'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 Mill Hill.

Which nearby towns do you also cover?

As well as Mill Hill, we cover the surrounding area, including Archway (1 mile), Barnet (1 mile), Bounds Green (1 mile), Chalk Farm (1 mile), Colindale (1 mile) and Crouch End (1 mile).

Which postcodes does Mill Hill cover?

The Mill Hill area covers N, NW and EN.