Emergency response

Sewage backup emergency

PPE-equipped engineers, jetting, sanitisation, and Trade Effluent Consent paperwork where required.

Sewage entering a property, through a backed-up toilet, basement floor drain, or external manhole surcharge, is a serious health and structural emergency. Categorised as Category 3 'Black Water' under industry-standard IICRC S500, it contains pathogens (E. coli, hepatitis A, norovirus), and any porous materials it has touched (carpet, soft furnishings, plasterboard) typically need disposal under controlled-waste regulations.

Our emergency drainage team responds within 60 minutes with full PPE, industrial wet vacs rated for contaminated water, anti-microbial decontamination chemicals (per BS EN 14476), and the documentation required for HSE compliance and insurance claim handling.

Need this service in London?

Call 020 8050 5306
Book online

When We Use This

Where this service applies

Sewage backing up through ground-floor toilet or shower
External manhole / inspection chamber overflowing
Basement drainage surcharge during heavy rain
Multi-flat building shared-drain backup
Commercial kitchen sewage backup (food contamination risk)
Care home / healthcare sewage emergencies (CQC reportable)
Insurance claim documentation for property damage
HSE compliance for commercial premises

Our Process

How we deliver

1
Property evacuation guidance
Affected area sealed off. Vulnerable occupants moved away from contamination.
2
Source containment
Drainage isolated. Backflow prevention. First-pass clearance.
3
Sewage extraction
Industrial wet-vacs rated for contaminated water remove standing sewage.
4
Drainage clearance
High-pressure jetting. CCTV survey to identify root cause.
5
Bio-decontamination
EN 14476 compliant anti-microbial treatment of all contaminated surfaces.
6
Contaminated material disposal
Carpets, soft furnishings, contaminated plasterboard removed under HSE waste protocols.
7
Drying & restoration
Industrial dehumidification. Verified moisture content. Full restoration including replacement of removed materials.
8
Insurance documentation & HSE compliance pack
Full root-cause analysis, photographic record, waste transfer notes.

Frequently Asked

Your questions answered

How dangerous is sewage backup contamination?

Significantly. Sewage is classified as Category 3 Black Water, contains pathogens including E. coli, hepatitis A and norovirus. Direct contact carries genuine infection risk, and porous materials (carpet, plasterboard, fabric) cannot be effectively decontaminated and should be disposed of under controlled-waste protocols.

Will my insurance cover sewage backup damage?

Most UK home buildings insurance policies cover sudden sewage backup from sources outside your property (Thames Water sewer issues, shared drain failures). Policies vary on internal source backup, some cover, some require accidental damage extension. We document the source on the CCTV survey for insurance purposes. Insurance & restoration →

How quickly can you respond?

Within 60 minutes anywhere in London. Sewage backup is prioritised above all other emergency dispatch categories because of biohazard risk.

Who's responsible, me or Thames Water?

Depends on where the blockage / collapse is. Inside your property boundary = your responsibility. Public sewer or shared drain = Thames Water's responsibility (most shared drains transferred to water authorities under the 2011 Regulations). We identify the source on our CCTV survey and direct you to Thames Water for free repair on their side.

Do I need to leave the property during cleanup?

Vulnerable occupants (children, elderly, immunocompromised) should leave the affected area until full decontamination is complete. Healthy adults can remain in unaffected parts of the property if there's clear isolation. We'll advise based on the specific situation.