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Does SM6 flood?

Yes — parts of the SM6 district carry real flood risk: 3 of its 24 at-risk postcodes reach the Environment Agency's High likelihood band. The SM6 postcode district covers Wallington North, Beddington, Hackbridge, South Beddington & Roundshaw, close to Carshalton, North Cheam, South Norwood, and surrounding villages in parts of England and Surrey.

24 postcodes in the SM6 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 3 high, 21 low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

Free preview first · full report £19

Which SM6 postcodes are at risk?

SM6 7DJ up to High SM6 7GE up to High SM6 7NN up to High SM6 7AH up to Low SM6 7BS up to Low SM6 7DU up to Low SM6 7EA up to Low SM6 7EF up to Low SM6 7EG up to Low SM6 7EN up to Low SM6 7EP up to Low SM6 7EQ up to Low SM6 7ER up to Low SM6 7ET up to Low SM6 7EX up to Low SM6 7GH up to Low SM6 7LH up to Low SM6 7LY up to Low SM6 7LZ up to Low SM6 7NF up to Low SM6 7NG up to Low SM6 7NJ up to Low SM6 7NW up to Low SM6 9LB up to Low

Rivers and flooding history near SM6

The rivers that matter here, each monitored live on FloodRadar:

172 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (9 at warning level or above), most recently 18 July 2025. Warnings cover flood areas, not individual addresses.

No recorded flood extent is mapped near this district's centre. No recorded outline near the district means no flood was mapped here, which is not evidence none happened: the Environment Agency mapped only some floods, mapping effort rose sharply after about 2000, and surface-water flooding is largely absent from this record.

🏠 Buying or renting in SM6? The full property flood-risk report covers any postcode here — the official likelihood band, every recorded flood nearby with distances, warning history year by year, how the local rivers behave, and an insurance outlook, print-ready for £19. See what's in the report →

Flood risk in nearby postcode districts

SM5 SM4 SM3 SM1

Band = the worst likelihood band of any property in that postcode (EA Risk of Flooding from Rivers & Sea, defence-adjusted, area-level). Check any postcode in detail — or get the full £19 property report — at the property flood-risk report. © Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064.