UK regulations on interceptor maintenance – are you compliant?

If your business handles oil, fuel, or other hydrocarbons, or has vehicle traffic on hard-standing surfaces, chances are you have an oil separator or hydrocarbon interceptor installed to comply with regulations and prevent pollution. But here’s the part many overlook: owning one comes with legal responsibilities. In the UK, strict regulations govern the maintenance of these systems – not just to keep operations running smoothly, but to protect the environment and avoid costly penalties.

Why Interceptor Maintenance matters

Oil separators are designed to prevent hydrocarbons from entering drainage systems and polluting local watercourses. When properly maintained, they help businesses stay environmentally responsible. When neglected, they become a serious liability.

That’s why the UK standard BS EN 858-2:2003 outlines key requirements for operation and maintenance, including:

• Inspections every six months
• A functioning high-level alarm or automatic warning system
• Five-year integrity testing 
• Clear, up-to-date maintenance records

The Environment Agency also advises immediate servicing after any oil spill or alarm activation.

What’s at stake for non-compliance?

Failing to maintain your interceptor isn’t just a technical oversight – it can have serious consequences:

• Environmental damage and cleanup costs
• Regulatory fines or legal action
• Insurance complications
• Reputational harm

In short, non-compliance is a risk your business can’t afford to take.

What does compliance look like?

Compliance isn’t about ticking boxes – it’s about building good practices into your site’s routine management. That means:

• Regular inspections by qualified professionals
• Reliable, tested alarm systems
• Accurate and accessible maintenance records
• Prompt response to spills or alarm activations

Not sure where your site stands? Start by reviewing your latest maintenance logs. When was your last inspection? Is your alarm system operational? Are your records audit-ready?

Need help staying compliant?

Managing interceptor maintenance doesn’t have to be complicated. At Andel, we specialise in helping businesses stay compliant – from scheduled servicing and alarm installations to documentation and audits.

Find out more about our services and how we can help safeguard your site – learn more.