How to Dispose of Commercial Cooking Oil

Commercial kitchens produce a significant amount of waste oil, especially in high-volume cooking environments like restaurants, pubs, and takeaways. Whether you’re running a fast-food chain or a school canteen, knowing how to dispose of commercial cooking oil responsibly is vital for legal compliance and environmental protection.  

This guide covers the best disposal methods, common mistakes to avoid, compliance tips, and the benefits of professional collection. 

How to Dispose of Commercial Cooking Oil

Challenges of disposing waste cooking oil in the UK 

Handling waste cooking oil isn’t always simple. UK businesses must follow strict regulations to avoid damaging drains, breaking the law, or harming the environment. Understanding how to dispose of commercial cooking oil safely is essential as hot oil poses a burn risk, and proper procedures and protective gear are needed to keep staff safe. Common waste oils include sunflower, vegetable, chip, and frying oil. Correct disposal is just as important as safe handling. 

How to dispose of oil for commercial kitchens 

Disposing of commercial cooking oil the right way involves several options depending on the volume your business uses, the available infrastructure, and your sustainability goals. 

Disposable containers 

If you’re wondering how do you dispose of cooking oil in small quantities, start with heat-resistant, leak-proof containers. Once cool, pour the oil into a disposable container and store it until it can be collected. Never use single-use plastic bottles or cracked containers, as they may leak and contaminate storage areas. 

Arrange professional cooking oil disposal 

For larger operations, the most effective option is professional waste oil collection. Services like our FiltaFry fryer management include scheduled pick-ups, safe transport,  environmentally friendly recycling processes and fryer cleaning. If you’re asking, how do I get rid of used cooking oil safely and legally, this is the most reliable method. 

Use a dedicated storage tank for oil 

Many businesses choose to install dedicated oil storage tanks. These are particularly useful for high-volume sites where cooking oil accumulates quickly. These tanks are robust, compliant with UK regulations, and make collection easier. 

Reuse & recycle cooking oil where possible 

Instead of asking what do I do with oil after frying, consider whether it can be reused. Filtered used oil can often be reused for secondary frying, depending on quality. Alternatively, recycling used vegetable oil into biodiesel is a popular choice among eco-conscious businesses. Contact Filta’s experts for more information. 

How can old cooking oil be recycled? 

Recycled oil is typically transformed into biodiesel or used in animal feed production (if processed correctly). If you’re wondering how do you dispose of old cooking oil sustainably, this is one of the most environmentally responsible options. Partnering with a licensed recycling provider ensures your oil waste is repurposed instead of wasted. 

Install a grease trap 

Grease traps are essential in any commercial kitchen. They work by separating fats, oils, and grease (FOG) from wastewater, helping to prevent blockages in your pipes and the public sewer system. While traditional grease traps or more efficient Grease Recovery Units (GRUs), like the Filta Cyclone, don’t dispose of oil directly, they play a crucial role in capturing and containing it prior to collection. The recovered grease can then be processed and repurposed into recycled oil. 

Filta FOG Cyclone under sinkCapture oil accidentally poured down the drain 

Even when staff are careful, oil can sometimes be accidentally poured down the drain. That’s where grease management systems come in. Grease traps and Grease Recovery Units (GRUs) are designed to capture fats, oils, and grease (FOG) from wastewater before it causes blockages in your internal drainage or the wider sewer network. 

While grease traps provide a basic but effective barrier, GRUs offer a more advanced solution by actively separating and collecting FOG. Neither system disposes of oil directly, but both are essential for containing waste before it’s professionally collected. The captured grease can then be processed and converted into recycled oil—supporting sustainability efforts in commercial kitchens. 

Consequences of pouring cooking oil down a sink or drain 

Many still ask, how do you dispose of frying oil at the end of the day. Pouring oil down the sink might seem like the quickest solution, but it’s the most damaging. 

When poured into sinks, oil hardens and clogs pipes. This leads to fatbergs – massive blockages that cost businesses and councils thousands to clear. For your business, this can lead to plumbing issues, bad odours, costly repairs, and potential fines. 

Food Safety Act 1990 compliance 

 The Food Safety Act 1990 requires food premises to be kept clean, hygienic, and in good condition. This includes managing waste properly and preventing contamination from substances like used cooking oil. 

If you’re wondering how to dispose of cooking oil responsibly, it starts with understanding your legal obligations. Under Section 111 of the Water Industry Act 1991, it is a criminal offence to discharge fat, oil or grease into the public sewer if it causes a blockage or interferes with the sewage system. 

Failure to comply can result in enforcement action, including prosecution, particularly if oil disposal compromises food safety or hygiene standards. 

Storing used cooking oil legally 

Storing used cooking oil isn’t just about convenience; it’s about compliance. Storage containers must be secure, labelled, and stored away from food prep areas.  Keep in mind: 

  • Used oil has an expiration date and should not be reused once it’s rancid. 
  • Store oil in cool, dark places to slow down degradation. 
  • Always use clearly marked storage tanks or bins with fitted lids. 

Oil disposal mistakes to avoid 

Not complying with local oil disposal regulations 

UK businesses are legally required to dispose of cooking oil through licensed carriers. Failing to do so can lead to fines or even closure. Always use a reputable service with full documentation. Contact Filta’s experts for more information. 

Pouring oil down the drain 

This cannot be stressed enough: never pour oil into drains or toilets. It damages drains, pollutes water systems, and breaches waste disposal laws. 

Improper storage 

Storing oil in weak containers or leaving it exposed to open air can lead to leaks, contamination, and unpleasant smells. Always store used oil in sealed, durable containers. 

Cooking Oil Filtration & Fryer Management for Commercial Kitchens by FitaProfessional oil disposal and fryer cleaning for commercial kitchens 

Understanding how to dispose of chip oil, how to dispose of sunflower oil, or even how to dispose frying oil is one thing—doing it consistently and legally is another. That’s where Filta UK comes in. 

Our specialist waste oil collection service ensures your used oil is handled safely and sustainably. We also offer professional grease trap installation and maintenance to support your kitchen’s long-term efficiency. 

Ready to streamline your oil disposal process? 

Contact Filta’s commercial kitchen specialists and find out how we can help you stay compliant, efficient, and eco-friendly.