Drain Unblocking, Cleaning & Repairs in Liverpool

We know you have options, which is why we’ve built our reputation on being the best. We're not some distant national chain; we're your neighbours and your local drainage partners.

An interceptor (sometimes called a separator) is a special unit installed in a drainage system, usually at commercial or industrial premises. Its main job is to 'intercept' and separate certain contaminants – like oil, fuel, silt, or fats, oils, and greases (FOGs) – from wastewater before it enters the main sewer system. Think of it as a pre-treatment filter that protects our public drains and the environment. There are different types, such as full retention oil separators, bypass separators, and silt traps, all designed for specific waste types.

The cleaning frequency for your interceptor really depends on a few things: the type of interceptor, how busy your site is, the volume of wastewater it handles, and the kind of contaminants going into it. For commercial kitchens dealing with lots of fats, oils, and greases (FOGs), a grease trap or interceptor might need checking and emptying every few weeks or months. Industrial sites handling oils or fuels might need a service quarterly or bi-annually. We always recommend getting a professional assessment so we can suggest a tailored cleaning schedule that fits your specific needs and keeps you compliant.

If your business discharges trade effluent (wastewater from a commercial or industrial process) that contains specific contaminants like oil, grease, or silt, then yes, an interceptor and its regular cleaning are very likely a legal requirement. Businesses like garages, car washes, manufacturing plants, and large commercial kitchens typically need them. The Water Industry Act and other environmental regulations require businesses to prevent pollution of public sewers. Neglecting this can lead to enforcement action, fines, and operational disruptions. It's best to check with us if you're unsure – we can advise you.

When our team carries out interceptor cleaning, we use specialist equipment to safely and efficiently remove the accumulated contaminants. First, we'll open and inspect the interceptor. Then, using powerful vacuum tankers, we'll pump out all the separated oil, grease, silt, or sludge. We then thoroughly clean the internal walls and baffles to make sure the unit functions correctly. Finally, we'll check everything is working as it should before responsibly disposing of the waste at an authorised treatment facility, providing you with all the necessary waste transfer notes.

The cost of interceptor cleaning varies depending on several factors, such as the size of your interceptor, how much waste needs to be removed, the type of contaminants, and how often you need the service. Access to the interceptor can also play a role. We believe in transparent pricing, so we’ll always provide you with a clear, no-obligation quote after assessing your specific requirements. Regular maintenance contracts often offer better value in the long run, helping you budget and avoid emergency call-out costs.