Sewer line repairs and addressing sewer system damage caused by FOG (Fats, Oils and Grease) blockages are significant challenges faced by businesses and municipalities. These blockages can cause severe plumbing issues, environmental damage and costly repairs.

What Is FOG and Why Is It a Problem?

FOG consists of fats, oils and grease from cooking, cleaning or industrial processes. These substances are liquid when warm but solidify as they cool, often accumulating in sewer lines and creating stubborn blockages. Over time, FOG build-up can completely block pipes, causing sewer backups, overflows and extensive damage to sewer infrastructure.

In commercial settings like restaurants, cafeterias or food processing facilities, the volume of FOG entering the sewer system is exponentially higher than in residential settings. When businesses neglect proper grease trap maintenance, these substances enter municipal sewer systems, compounding the problem and increasing repair costs for both private and public entities.

The Process of Repairing Sewer Lines Damaged by FOG Blockages

When sewer lines or systems are damaged by FOG blockages, repairs can range from relatively simple cleanouts to complex line replacements.

Inspection and Diagnosis

The first step is identifying the source and extent of the problem. Plumbers or sewer line professionals use specialized cameras to inspect the line. This allows them to locate the blockage and assess whether the line is intact or has sustained damage from the pressure caused by the obstruction.

FOG Removal

If the damage is limited to a blockage, professionals use mechanical augers, hydro jetting or chemical treatments to break down and remove the FOG.

• Mechanical Augers: These tools use rotating blades to cut through grease and debris.



• Hydro Jetting: A high-pressure water stream is used to scour the interior of the pipes, removing FOG buildup and debris.

Pipe Repair or Replacement

If the FOG blockage has caused cracks, collapses or leaks in the sewer line, repairs or replacement may be necessary:

• Spot Repairs: For minor damage, professionals may use resin patches or pipe sleeves to seal cracks without replacing the entire sewer line.

• Trenchless Repair: In cases where extensive repairs are required, trenchless methods such as pipe bursting or cured-in-place pipe (CIPP) lining can minimize excavation.

• Full Line Replacement: When the pipe is severely damaged, full excavation and replacement may be the only solution, which is labor-intensive and costly.

Why Are Sewer Line Repairs Costly?

Both repairing sewer lines and removing FOG blockages come with significant costs due to the complexity of the work and the equipment involved. The method of sewer line repair can also make a significant difference in price.

Labor and Equipment

FOG removal and sewer line repair require specialized equipment, skilled labor and in some cases, advanced technologies like hydrojetting or robotic pipe repair tools. Excavation for line replacement adds even more labor and equipment costs.

Downtime for Businesses

Sewer line repairs can disrupt business operations, especially in commercial kitchens or facilities that can’t operate without functioning drains. This downtime can result in lost revenue.

Environmental Compliance and Fines

Businesses that contribute to FOG blockages may also face penalties for violating environmental regulations, adding to the financial burden. Municipalities often pass on the cost of repairing public sewer lines to the businesses responsible for the blockages.

How Consistent Grease Trap Cleaning Prevents FOG Blockages

Preventing FOG blockages is far more cost-effective than repairing the damage they cause. One of the most effective measures is consistent grease trap cleaning and maintenance.

Benefits of Regular Cleaning

• Prevents Blockages: Routine cleaning ensures that grease traps function effectively, preventing FOG from accumulating in sewer lines.

• Extends Lifespan of Sewer Lines: Clean grease traps reduce wear and tear on sewer lines, minimizing the need for costly repairs.

• Avoids Fines and Liability: Proper maintenance allows food service businesses to maintain compliance with local regulations, avoiding fines or liability for sewer system damage.

Best Practices for Grease Trap Maintenance

Set a Cleaning Schedule

Most municipalities require grease traps to be cleaned every 30 to 90 days, depending on the size of the grease trap. In addition to the minimal grease trap cleaning intervals, businesses in Georgia must also adhere to the 25-percent rule, which states that no more than 25 percent of the volume of a grease trap can be FOG. Businesses that reach the 25 percent threshold prior to their normal 30 or 90 day interval requirement will need to schedule more frequent grease trap cleanings.

Hire Licensed Professionals

Professional grease trap cleaning service providers use specialized equipment and trucks to thoroughly empty and clean grease traps, inspect the traps and ensure compliance with regulations, preventing problems down the line.

Educate Staff

Train employees to dispose of food waste properly. Simple practices like scraping plates into trash bins instead of rinsing food waste down sinks can significantly reduce FOG accumulation in grease traps.

Proactive Maintenance Saves Time and Money

Sewer line damage is preventable with proper grease trap maintenance. Consistent cleaning not only saves your business from costly repairs but also helps protect municipal sewer systems and the environment. No business wants to draw the ire of not only local regulators but also their neighbors in the community by being the cause of a sewer backup.

Need Reliable Grease Trap Maintenance?

At Southern Green Inc., we have specialized in grease trap cleaning services in the Greater Metro-Atlanta area since 2007.

Contact us today to schedule a consultation by calling at 817-857-7400 and keep your plumbing running smoothly!