What You Need To Know About Grease Traps and FOG

What You Need To Know About Grease Traps and FOG

Most County Councils Nationwide experienced a significant increase in the number and frequency of blockages in the public drainage network caused by Fats, Oils and Grease.

These blockages can result in flooding and environmental pollution of rivers and streams.

FOG causes a problem when it is simply washed down the drains, in commercial kitchens, either during food preparation or in the washing up operation.

When it cools it will congeal and accumulate in pipelines thus eventually blocking the pipe.

The effect is similar to a build up of cholesterol in the arteries of human beings!

Regular cleaning out of grease traps and proper disposal of FOG will be a mandatory part of the FOG programme.

What You Need To Know About Your Grease Traps and FOG



1. What is FOG?

`FOG` Stands for Fats, Oils and Grease.

2. Where Does It Come From?

It is generated in significant quantities from the kitchens of Food Service Establishments (F.S.E.) and is the byproduct of food preparation and washing up activities.

3. Why is it a Problem?

When disposed of to the drainage system it cools down, turns into solid form and causes blockages.

FOG congeals and accumulates in pipes, pumping stations and equipment, thus causing blockages in the drainage network.

These blockages can then cause flooding or pollution of rivers and streams. Basement flooding is frequently the result of blockages caused byFOG.

It also causes major problems at Wastewater Treatment Works, making the achievement of high environmental standards more difficult and adding to the expense of the treatment.

4. How Are We Managing It?

Some councils have initiated a programme to control the discharge of FOG to the drainage network.

Operators will be licensed to discharge FOG and as part of the conditions of that licence, limits will be set on the amount of FOG that may be discharged, premises will be inspected, advice given to the operator on the steps they have to take to obtain a licence and once licensed, each FSE will subsequently be visited four times a year to ensure compliance with the conditions set in the discharge licence.

5. Who Will Be Licensed Under This Programme?

Food Service Establishments are to be licenced. These include, but are not limited to, hotels, pubs, restaurants, take-aways, canteens, convenience stores, B&B establishments, etc. The operator of the FSE is responsible for submitting the licence application.

6. How Will Licences Be Monitored?

Compliance with the conditions in a trade effluent discharge licence is a legal requirement under the Water Pollution Act. A team of inspectors will visit each FSE four times a year, or more frequently if required. They will check for compliance with all conditions of the discharge licence. McBreen Environmental can help you through the whole process in achieving compliance.

7. What Does an FSE Operator Need to Do?

Grease trapping or grease retention equipment must be installed in order to reduce the levels of FOG in the final discharge. The design, operation and maintenance of grease management equipment must be fully in accordance with the relevant standards. Lo-Call 1890 66 33 33 to learn how McBreen Environmental can help you manage your grease traps and your FOG License requirements.

8. What is a grease trap?

A grease trap is a retention chamber, plumbed into the drainage pipes, that collects FOG, while the water element of the waste can pass into the drainage network.

The performance of a grease trap is based on the fact that oil floats on water and when sufficient quantities have accumulated they can then be removed from the surface of a grease trap.

Grease traps require regular cleaning and the recovered FOG/water mixture must be collected by a properly licensed waste contractor and disposed of at a licensed facility.

McBreen Environmental provides this services and complies with all the license requirements

9. Who Can Clean it Out and Where Is It Disposed?

Our up to date and valid waste collection permit, covering FOG, is an essential legal requirement and our facility that is properly authorised to receive and dispose of FOG, place McBreen Environmental as the best choice for FOG Management.

10. What Types Of Grease Trap Are Available?

There are two main types of grease traps available, either a passive retention type or a grease removal type.

Each FSE will have its own specific requirements and should seek our advice on what best suits their needs.

Our experts will be available to assist you in this process, from start to finish and ongoing management.

11. What Are Best Management Practices (BMP)?

These are practices implemented in the kitchen to ensure that as little solid or oily waste enters into the drainage network.

These include, among others, the use of strainers in sinks, the dry wiping and/or pre-rinsing of dishes and pots before they are washed and the regular inspection and maintenance of the grease management system.

McBreen Environmental can help you through the whole process in achieving compliance, including advice on BMP

12. What happens to waste FOG?

Waste FOG is almost completely recyclable.

Used cooking oil is already collected from FSEs and recycled.

Currently, most waste FOG is processed by rendering to create tallow.

However in the future, it is possible that both products could be a raw material for the production of bio-fuel.

13. What Are the Benefits of Working With McBreen Environmental?

McBreen Environmental experts spend thousands of working hours every year clearing FOG related blockages in the drainage network.

Our Grease Trap Management Service will drastically reduce the number of blockages due to FOG.

This will result in a drainage network which operates much more efficiently, less inconvenience and disruption to households and businesses, and an overall compliance with the law by taking advantage of our Grease Trap planned maintenance service, waste permit and certifications.


As part of the licence conditions, it will be a requirement for the FSE to ensure that their grease traps are properly maintained and cleaned out by waste companies authorised to do such work and ultimately, disposed of to an authorised facility.

McBreen Environmental provides this services and complies with all the license requirements.

This is required to harmonise the collection and disposal of FOG with legal requirements covering waste collection and disposal.

When carrying out their quarterly monitoring inspection of a premises, inspectors will then carry out an audit of transportation and disposal of FOG waste to ensure compliance with these requirements, you will be safe knowing that McBreen Environmental provides and complies with all these requirements.


We are licensed in waste disposal and offer excellent maintenance plans at very competitive rates.

Get Maintained & Compliant Today with McBreen Environmental Grease Trap Services LoCall 1890 66 33 33 Today!

I would like to compliment the management for the expertise of the personnel.
The experts that take care and manage our restaurants grease traps were very polite, friendly, helpful and punctual.
I am delighted with the service and prices, i trully recommend McBreen Environmental