What to Do if Your Off-Mains Drainage is Non-Compliant

If your home relies on a septic tank, cesspit, or sewage treatment plant, it’s crucial to make sure it’s up to standard. Since 2020, stricter regulations mean that if your system doesn’t comply, you could face fines, expensive repairs, or even legal trouble. Here’s what you need to do if your off-mains drainage system isn’t compliant.

Step 1: Confirm Non-Compliance

How do you know it’s non-compliant?

Signs your system might not meet the latest rules include:

• Discharging to a watercourse (like a river or stream).
• No record of maintenance or inspections.
• Obvious signs of leaks, damage, or poor function.

A professional septic tank survey can confirm the current status and pinpoint what needs fixing.

Step 2: Understand Your Legal Responsibilities

What’s required by law?

The Environment Agency’s General Binding Rules set out what you must do:

• No direct discharge to watercourses – this is no longer allowed for septic tanks.
• Regular maintenance – tanks must be emptied and kept in good condition.
• Upgrades if needed – non-compliant systems must be replaced or upgraded to a sewage treatment plant.

Failing to comply can lead to enforcement action – so it’s essential to act if a problem is identified.

Step 3: Choose the Right Solution

Depending on your situation, you might need to:

• Replace the septic tank with a modern sewage treatment plant.
• Install a drainage field (soakaway) to treat the discharge properly.
• Repair or upgrade the existing tank to meet the latest standards.

Each property is different – a professional survey will help you find the best approach for your home and budget.

Step 4: Get Professional Help

Why you need an expert:

Sorting out a non-compliant system isn’t a DIY job. Working with an experienced surveyor and installer ensures:

• The right system is chosen and approved.
• All work is done to the highest standard.
• You avoid fines or enforcement action.

Step 5: Secure Peace of Mind

Fixing your drainage system might feel overwhelming, but getting it sorted quickly protects your home, your health, and your wallet. It also makes it easier to sell your property in the future.

At Boxall Ward, we offer comprehensive septic tank surveys and advice to guide you every step of the way. If you’re worried your system isn’t compliant – or just want to be sure – get in touch.

Ready to check your system or book a survey? Contact us today – we’re here to help!