18 Person Septic Tank


18 Person Septic Tank: Off-Mains Sewage Solution for Large Households

Are you looking for a reliable, cost-effective septic tank for your large property? Our 18 person septic tank kits provide a simple and fully compliant sewage solution for off-grid homes in the UK.

Easy Installation, Eco-Friendly, and Cost-Saving

Our septic tank soakaway kits are designed for hassle-free DIY installation, or your builder/groundworker can handle it. Here’s the simple process:

  1. Dig a hole
  2. Drop in the septic tank, inspection chamber, and drainage field crates
  3. Connect the pipework
  4. Backfill – no concrete needed!

With no electricity required and better performance than traditional herringbone soakaways, our kits are an excellent choice, even in poorly draining clay soil.

Building Control and Environment Agency Approved

Rest assured, our septic tank kits meet the latest UK Building Control, Environment Agency, and General Binding Rules standards, making planning permission smooth. We even offer free UK delivery, with most orders arriving within 7 working days.

Save Thousands Compared to Contractor Installation

Typical contractor-installed septic tank projects can run £12,000 to £15,000. Our 18 person septic tank kits start from just £1999, saving you a minimum of £13,000! Plus, installation takes a mere 3 hours!

Scaled Kits for Homes and Beyond

From 1-2 bedroom cottages to 7-8 bedroom houses, we have the perfect septic tank and soakaway kit. And, if you run a glamping site, camping site, or need a solution for shepherd’s huts, we have specialized kits for those too!

Why Choose Us?

  • UK-focused expertise for your specific needs
  • Fast, free delivery throughout the UK
  • Incredible cost savings for your project
  • Environmentally-friendly sewage management
  • Compliant solutions to keep you worry-free

Get Access To Septic Tank Kits
Get Access To Septic Tank Kits