Sewers and bust water mains
Affinity Water is responsible for sewers in Hillingdon.
Affinity Water asks customers who spot a leaking or burst pipe on a street or pavement to report it directly to them.
You can report a leak online via Affinity Water’s website:
Report a leak to Affinity Water
Alternatively, you can contact their 24‑hour leak line on freephone 0800 714 614.