The following notes give guidance on who to contact for various types of flooding:
Flooding from public sewers
Thames Water owns and manages the network of public foul and surface water sewers. To report an overflowing public sewer, you should call Thames Water on 0800 316 9800 (24-hour service). If you wish to view the Thames Water sewer map for your area, please email Thames Water firstname.lastname@example.org to request this.
Flooding from private sewers or drains
If your private drains or sewers are overflowing, you will need a drainage contractor to deal with any blockage. If you are uncertain if any blockage is in the public or private sewers, Thames Water should be able to determine this, once on site, then recharge you the cost of any work on the private sewers.
Flooding from the public highway
For flooding from the public highway or reporting blocked road gullies or gratings, contact Hampshire Highways North office at Hook, on 0300 555 1388.
The local water supply company is South East Water - Customer Call Centre 0845 301 0845. You can also report a leak to South East Water online. The water company is responsible for its supply up to and including the water stopcock.
Flooding from a water service pipe or internal pipework
This is the responsibility of the homeowner or landlord and would need the attention of a plumber.
Flooding from a main river
The Environment Agency has enforcement powers relating to main rivers. The general enquiry number is 03708 506 506 and the 24-hour Floodline advice and flood warning service is 0345 988 1188.
Hampshire County Council has enforcement powers relating to ordinary watercourses (smaller ditches or streams that are not listed as a main river). Further advice can be found on the Hampshire County Council website.
Responsibilities for maintaining rivers, ditches, and watercourses
All watercourses including rivers, ditches and streams are the responsibility of riparian owners to look after. You are a riparian owner if your property or land is on, or boarders, a watercourse. Riparian owners have a duty to keep the watercourse clear of any obstruction to flow and Hampshire County Council can serve legal notices on riparian owners to deal with obstructions. Please see the Hampshire County Council leaflet on Riparian Ownership for more details. For advice, during office hours, call Hart District Council on 01252 774210. For advice, email email@example.com.