Newly installed septic tank access points with bricks and pipes, indicating residential wastewater systems and potential FOG issues.

Kiranjyot

July 21, 2025

Sanitation

FOG Issues and Septic Tank Struggles During Winter Months

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One always expects the septic tank system to perform at its best underground.

The peak performance offers peace of mind, as the day can be ruined by blockages, sludge build-up due to septic tank failure, and other problems, such as foul odours from your backyard.

Nobody wants a septic tank-induced headache, especially during the holiday season.

Yet your septic tank is under extreme stress during the cold winter months.

Several factors affect the functioning of a septic tank. At the top of the list are fat, oil, and grease problems.

Before understanding how FOG triggers septic tank failure, it is necessary to explore how the septic tank system operates.

Any waste goes down the drain and enters the septic tank.

Ideally, not only does the septic tank store waste, but the organic matter contained in it is aggressively degraded by millions of beneficial microorganisms.

The biological degradation produces by-products in the form of carbon dioxide and water.

The effluent is discharged, and solid waste settles to the bottom, creating sludge.

The winter months bring with them a lot of septic tank problems.

More people stay at home during the holidays, and several visitors also visit.

There’s a lot of cooking done, and during this time, the use of oil rises too.

This results in an additional amount of waste and the production of more fats, oils, and grease.

FOG Issues

Fats, oils, and greases are commonly used at home and are collectively referred to as FOG, derived from products such as butter, cheese, milk, vegetable oil, cooking oils, gravy, and mayonnaise.

FOG changes its physical state from liquid form to solid during the winter months.

It causes caking in the septic tank system, where FOG hardens and becomes encrusted on the surface of various components.

As the effluent is unable to drain out of the system, this may cause the system to choke.

Moreover, in the septic tank system, it deprives the system of dissolved oxygen.

The lack of dissolved oxygen disrupts the first two stages of anaerobic digestion, which are essential for the successful degradation of organic matter.

It further contributes to the accumulation of organic matter in the system, creating blockages.

Microorganisms During Winter Months

Microorganisms living in the environment of septic tanks are very temperature-sensitive.

In cold winter months, the performance of microbes either slows down or stops entirely.

Thus, when there is a lack of metabolic heat due to weak microbial communities, the battle against septic tanks is further compounded.

This can cause the septic tank treatment to be completely disrupted.

It is therefore necessary to take special care of the septic tank and avoid problems with it during the winter season.

This can be achieved through the use of innovative and eco-friendly septic tank treatment solutions that are both natural and sustainable.

Organica Biotech is a leading company offering innovative solutions for septic tank treatment and maintenance.

Bioclean Septic Plus is an advanced 5X power product that, during the winter months, helps in the degradation of fats, oils, and grease.

It prevents choking and removes the foul odour from the septic tank.

With Bioclean Septic Plus, maintaining the efficiency of the septic tank system in cold weather is easy, cost-effective, and straightforward.

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