Guidance only. Check before you act. Results are planning estimates, not a final drainage design, site survey or approval. Check current regulator, Building Control, planning, site and manufacturer requirements before buying equipment or starting work. Full disclaimer.

Cookie policy

What SepticSpec stores and how to change your choice.

Last updated 3 September 2026

Essential / functional storage

We use local browser storage only for practical tool state where useful, such as the percolation timer. Calculator inputs otherwise run locally in your browser without an account.

Advertising and analytics

Google advertising code may be loaded on content and calculator pages. For users in the UK, EEA and Switzerland, advertising consent must be handled through a Google-certified consent management platform. SepticSpec is designed to use Google Privacy & Messaging rather than a home-made advertising-consent banner.

Change your choice

Open privacy and cookie settings. If the Google consent interface is available, the link reopens its privacy choices. You can also clear site data in your browser to remove local tool state.