Soakaways

Soakaway Installation and Repairs

Site-led soakaway investigation, installation and repair for flooding, standing water and failed surface-water drainage systems across Hampshire and surrounding counties.

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Hampshire & SurreyLocal engineers

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Soakaway installation, investigation and repair

AFS assesses the drainage route, site constraints and likely ground conditions before recommending repair, replacement or a different surface-water solution.

AFS provides soakaway installation and repair for homes, commercial premises, estates and development sites across Hampshire, Surrey, West Sussex and surrounding areas.

We investigate failed or overloaded systems, blocked inlet pipework, waterlogged ground and recurring surface-water flooding before recommending a suitable route forward.

Send the postcode, photographs, drainage drawings if available and details of when the flooding occurs. We can then advise whether the next step is a site assessment, investigation or quotation.

For evidence of AFS drainage groundworks, view the photographed New Forest drainage-field project. It is a treated-wastewater drainage field rather than a rainwater soakaway, but it documents the excavation, drainage materials, distribution pipework, chamber work and reinstatement completed by the same drainage team.

Investigate the cause

We review the affected area, drainage route, access, ground conditions and symptoms rather than assuming every flooding problem needs a new soakaway.

Design or repair options

Depending on the findings, the work may involve clearing or repairing pipework, replacing a failed system, infiltration assessment or an alternative drainage design.

Installation and reinstatement

Where agreed, AFS can complete the drainage works, connect the surface-water system and reinstate the excavated area to the quoted scope.

How our soakaways process works

Send details

Provide photos, address, access notes and any drawings or background information.

Review and advise

We confirm the likely scope, whether a visit is needed and what information is missing.

Quote or attend

We provide a quotation or arrange suitable attendance depending on the service and urgency.

Soakaway testing and site suitability

A soakaway should be based on the catchment, ground conditions, available space and a suitable discharge strategy.

Standing water does not automatically mean that a larger soakaway will work. The problem may be an obstructed inlet, a collapsed chamber, saturated ground, unsuitable soil or runoff exceeding the original design.

Where a new system is proposed, site investigation and infiltration information help establish whether infiltration is suitable and what storage and drainage arrangement may be required.

Information considered

Roof or paved catchment area
Ground and infiltration conditions
Existing pipe routes and levels
Distance from buildings and boundaries
Access for excavation and reinstatement
Planning or drainage information for the site

Rainwater soakaways and septic drainage fields are different

This service manages rainwater or surface water; it is not a wastewater disposal system.

A rainwater soakaway receives clean surface water from roofs, drives and paved areas. A septic tank drainage field distributes settled wastewater through perforated pipes into suitable ground and is assessed under different requirements.

AFS can help identify which system is involved before recommending investigation, repair or replacement. For septic effluent, use our dedicated drainage-field service.

Choose the correct service

Roof and driveway water: soakaway service
Garden flooding: surface-water investigation
Septic tank discharge: drainage-field assessment
Unsuitable infiltration: alternative drainage advice

Evidence from completed AFS drainage groundworks

Project evidence should show what was actually installed, not rely on generic stock imagery.

The New Forest case study records work completed from 5 to 12 May 2026, including excavation, a 15 metre by 3 metre raised drainage field, drainage stone, filter sand, distribution pipework, an automatic pump chamber, topsoil and seeding.

That project manages treated wastewater and is not presented as a rainwater soakaway. It is included as genuine evidence of AFS excavation, drainage construction, chamber installation and reinstatement capability.

Evidence available on the project page

Original site and construction photographs
Project dates and location
Design plan and cross-section
Recorded material quantities
Installation sequence
Finished-ground reinstatement
Matching customer review

Photographs from a completed AFS drainage project

These original photographs are from the New Forest drainage-field installation completed by AFS in May 2026. The project is a treated-wastewater drainage field, not a rainwater soakaway.

AFS excavation and ground preparation during the New Forest drainage-field project

Excavation and preparation with AFS vehicles and plant on site.

Drainage stone and distribution pipework installed by AFS in the New Forest

Drainage stone, inspection chamber and distribution pipework during construction.

Topsoil reinstatement and seeding after AFS drainage-field construction

Topsoil reinstatement and seeding after the drainage installation.

View the complete photographed case study →

Verified customer feedback from the documented project

This Google review refers to the New Forest drainage mound installation shown above.

★★★★★

“Drainage mound installation. Very efficient, good communication and site left nice and tidy. Could not ask for better service. Nice to have tradesmen that seem to take pride in their work.”

Mark Collins Google review

View AFS reviews on Google

Local soakaway services

Explore soakaway installation and repair information for priority service areas.

Hampshire Alton Basingstoke Petersfield Liphook Farnham Guildford Surrey

Request Soakaways advice or a quote

Send the details through and a member of the AFS team will come back to you.

Soakaways FAQs

Do you cover domestic and commercial sites?

Yes. AFS supports homeowners, commercial sites, estates, developers and property managers depending on the service required.

Which areas do you cover?

We mainly cover Hampshire, Surrey, West Sussex, Berkshire and nearby areas from our base near Alton and Liphook.

Does this page cover septic tank drainage fields?

No. This soakaway service is for rainwater and surface-water drainage. Wastewater from a septic tank requires a correctly assessed drainage field or another compliant discharge solution. See our septic tank drainage fields page.

Can a failed soakaway be repaired?

Sometimes. The right option depends on whether the problem is caused by blocked or damaged inlet pipes, silt, collapse, poor infiltration, an undersized system or unsuitable ground. An investigation helps determine whether repair, replacement or an alternative drainage solution is appropriate.

What information helps with a soakaway quotation?

Send the site postcode, photographs of the affected area, details of when flooding occurs, approximate drainage routes and any available drawings, surveys or previous repair records. A site visit or testing may be required before installation can be specified.

Can I see examples of completed AFS drainage work?

Yes. The linked New Forest case study includes original photographs, project dates, the design approach, material quantities, construction stages and reinstatement. It is a treated-wastewater drainage field rather than a rainwater soakaway and is labelled accordingly.

Need help with soakaways?

Send an enquiry or call the AFS team. We’ll confirm the practical next step and whether a site visit is needed.

Call 01420 561661