Thinking About Installing a Septic Tank?

Septic Tank Installation Salisbury

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If your property is not connected to the main sewer network, a septic tank is a practical and legal requirement for safe wastewater disposal. At Salisbury Drains24, we specialise in septic tank installation in Salisbury and surrounding areas, ensuring all systems meet UK building regulations and Environment Agency guidelines.

We also provide ongoing support — including septic tank inspection services — to help you stay compliant and avoid costly repairs down the line.


Step-by-Step: Our Septic Tank Installation Process

Installing a septic tank is a multi-stage project that requires careful planning, groundworks, and legal compliance. Here’s how we manage it:

1. Site Survey & System Design

Before any digging begins, we conduct a full site inspection to assess ground conditions, water table levels, property layout, and local regulations. We design a system tailored to your needs — whether that’s a septic tank with a soakaway or a treatment plant.

We’ll also check for any nearby watercourses, ensuring your system meets General Binding Rules.


2. Excavation & Base Preparation

Our team begins excavation for the tank and pipe runs using professional groundworks machinery. We ensure:

  • Proper tank depth and slope
  • A compacted and level aggregate base
  • Minimum disruption to surrounding areas

3. Tank Installation & Piping

We carefully lower the septic tank into position, secure it, and install all necessary 100mm or 150mm drainage pipework. This includes:

  • Inlet and outlet connections
  • Distribution pipework to soakaway or drainage field
  • Access covers for future maintenance

4. Soakaway System (if applicable)

If your property uses a soakaway to disperse wastewater, we install:

  • Drainage crates or perforated pipe runs
  • Clean stone aggregate
  • Geotextile membranes to prevent silting

5. Backfill & Final Connections

Once everything is tested and approved, we backfill the excavation using selected material to ensure no collapse or future movement. We connect the system to internal drainage and test for full flow.


6. Testing, Certification & Handover

We finish with a full system inspection and flow test. You’ll receive:

  • Installation completion certification
  • Guidance for care and maintenance
  • Options for ongoing septic tank inspection near you

Why Use Drains24 for Septic Tank Installation in Salisbury?

✅ Over 28 years’ experience in domestic and commercial drainage
✅ Fully insured engineers and guaranteed work
✅ Local compliance knowledge (Environment Agency, Building Regs Part H)
✅ No hidden fees — free fixed quotes
✅ Long-term care plans available (inspections, servicing, pump-outs)


What Happens After Installation?

Your septic tank will need regular inspections (every 12–18 months) to check levels, structural condition, and soakaway performance. We offer local, affordable support for:

  • Septic tank inspections
  • Soakaway performance checks
  • Pre-purchase drainage surveys
  • Maintenance contracts

Searching for “septic tank inspection near me” in Salisbury? We’re local, reliable, and ready to help.


🧼 Thinking Long-Term? Let’s Get Started

Whether you’re building a new property, replacing an old system, or upgrading to meet regulations — we can help with expert septic tank installation in Salisbury.

📞 Call Salisbury Drains24 today for a free site visit and fixed quote — no call-out charges, ever.


📋 FAQs

❓ Do I need planning permission for a septic tank?

In most cases, no — but systems must follow General Binding Rules and be at least 10 metres from watercourses or buildings.

❓ How long does septic tank installation take?

A typical domestic installation takes 2–4 days depending on ground conditions, weather, and soakaway requirements.

❓ How often should my septic tank be inspected?

We recommend a full septic tank inspection every 12–18 months, especially for households with high usage or older systems.

❓ What size septic tank do I need?

This depends on household occupancy and usage. We’ll advise the best capacity during the site survey.

❓ Do you offer soakaway testing or installation?

Yes. We carry out percolation tests, design soakaway systems, and install drainage fields where required.

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