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Septic Tank Installation Certificate
A Septic Tank Installation Certificate confirms that a septic tank or sewage treatment plant has been installed in compliance with the Environment Agency general binding rules, BS 6297, and Building Regulations Part H. It covers tank sizing, soakaway design, percolation test results, and Environmental Permit status.
Environment Agency General Binding Rules, BS 6297, Building Regulations Approved Document H, Environmental Permitting Regulations 2016Valid: One-off (annual emptying/inspection recommended)
What it covers
- Tank type, capacity, and manufacturer
- Percolation test results
- Soakaway/drainage field design
- Distance from watercourse and boundaries
- Building Regulations approval status
- Environmental Permit or binding rules compliance
Who needs a Septic Tank Cert?
Rural homeowners
Property developers (off-mains drainage)
Self-builders
Agricultural premises
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Frequently asked questions about Septic Tank Cert
Do I need permission to install a septic tank?
You need Building Regulations approval for all new septic tank installations. Since January 2020, septic tanks that discharge directly to a watercourse are banned under the Environment Agency general binding rules. You may also need an Environmental Permit.
What is the difference between a septic tank and a treatment plant?
A septic tank provides primary settlement only and must discharge to a drainage field (soakaway). A sewage treatment plant includes secondary biological treatment and can discharge to a watercourse with the appropriate permit. Treatment plants are required where no drainage field is viable.