The Role of Fats, Oils, and Grease in Sewage Blockages in Chapel Hill, NC thumbnail

The Role of Fats, Oils, and Grease in Sewage Blockages in Chapel Hill, NC

Published Mar 24, 25
2 min read

Fats, oils, and grease (commonly referred to as FOG) are a significant contributor to sewage blockages and backups in Chapel Hill, NC. While they may seem harmless when washed down the drain, these substances can solidify, accumulate, and create serious plumbing issues over time. FOG-related blockages not only disrupt residential and commercial plumbing systems but also impose financial and environmental burdens on communities.

This article examines how fats, oils, and grease contribute to sewage blockages, their effects on plumbing systems, and the measures needed to prevent these issues.

What Are Fats, Oils, and Grease (FOG)?

FOG refers to the byproducts of cooking and food preparation that include:

  • Fats: Solid at room temperature, such as butter, lard, and animal fat.
  • Oils: Liquid at room temperature, including vegetable oil, olive oil, and cooking oil.
  • Grease: A general term for soft fats, often derived from frying or cooking meat.

These substances are generated in homes, restaurants, and food-processing facilities during everyday activities like frying, baking, and washing dishes.

How FOG Enters the Sewage System

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FOG typically enters the plumbing system through:

  1. Kitchen Sinks: Residual grease from cooking pans, utensils, and dishes is rinsed down the drain.
  2. Dishwashers: Hot water used in dishwashers can liquefy grease, allowing it to flow into pipes.
  3. Improper Disposal: Pouring cooking oil or grease directly into sinks or toilets is a common but harmful practice.

Although these substances may appear to flow easily down the drain, they cool and solidify as they travel through the plumbing system, leading to blockages.

How FOG Contributes to Sewage Blockages

Fats, oils, and grease cause blockages through several mechanisms:

1. Solidification

  • When FOG cools, it solidifies and adheres to the inner walls of pipes.
  • Over time, these deposits grow thicker, restricting water flow and creating clogs.

2. Fatbergs

  • In sewer systems, FOG combines with other waste materials, such as wet wipes, sanitary products, and debris, to form large, solid masses known as fatbergs.
  • Fatbergs can grow to enormous sizes, blocking entire sections of sewer lines and causing widespread backups.

3. Accumulation in Traps and Pipes

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  • Grease traps and plumbing traps are designed to capture FOG, but improper maintenance can lead to overflows and blockages.
  • FOG deposits can accumulate in bends and joints of pipes, further exacerbating the problem.

4. Interaction with Other Substances

  • FOG binds with food particles, hair, soap scum, and other materials in the drain, forming dense clogs that are difficult to remove.

Effects of FOG Blockages on Sewage Systems

FOG blockages have far-reaching consequences for both individual properties and municipal sewage systems in Chapel Hill, NC: (Need sewage removal in Chapel Hill, NC?)

1. Plumbing Problems

  • Slow Drains: FOG buildup restricts water flow, causing sinks, toilets, and showers to drain slowly.
  • Recurring Clogs: Frequent blockages require repeated plumbing repairs, leading to inconvenience and expense.
  • Backups: Severe clogs can result in wastewater backing up into homes and businesses, creating unsanitary and hazardous conditions.

2. Damage to Sewer Infrastructure

  • FOG blockages increase pressure in sewer lines, leading to pipe cracks, leaks, or bursts.
  • The accumulation of fatbergs in sewer mains can disrupt the flow of wastewater to treatment facilities, causing overflows and service disruptions.

3. Environmental Impact

  • Sewer overflows caused by FOG blockages release untreated sewage into local water bodies, polluting rivers, lakes, and streams.
  • Contaminated water poses risks to aquatic ecosystems, wildlife, and public health.

4. Increased Maintenance Costs

  • Municipalities must invest significant resources in cleaning sewer lines, removing fatbergs, and repairing damaged infrastructure.
  • The costs associated with FOG-related maintenance are often passed on to taxpayers.
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Preventing FOG Blockages in Chapel Hill, NC

Preventing FOG blockages requires a combination of individual responsibility, proper disposal practices, and community-wide efforts. Here are some key strategies:

1. Proper Disposal Practices

  • Avoid Pouring FOG Down the Drain: Dispose of cooking oils, grease, and fats in sealed containers and discard them in the trash.
  • Scrape Plates and Pans: Before washing, scrape food scraps and grease into the trash to reduce the amount of FOG entering the drain.

2. Use of Grease Traps

  • Installation: Restaurants, food-processing facilities, and commercial kitchens should install grease traps to capture FOG before it enters the plumbing system.
  • Maintenance: Regular cleaning and maintenance of grease traps ensure they function effectively and prevent overflows.

3. Public Awareness Campaigns

  • Educate residents and businesses in Chapel Hill, NC about the impact of FOG on plumbing systems and the environment.
  • Promote best practices for FOG disposal through community programs and outreach initiatives.

4. Regular Sewer Maintenance

  • Municipalities should implement routine inspections and cleaning of sewer lines to remove FOG buildup and prevent blockages.
  • Advanced tools, such as hydro jetting and robotic crawlers, can effectively clear pipes and detect potential issues.

5. Recycling and Reuse

  • Encourage the recycling of used cooking oil for conversion into biodiesel or other renewable energy sources.
  • Establish collection programs for households and businesses to safely dispose of used cooking oil.

The Role of Professional Plumbing Services

If FOG blockages occur in residential or commercial plumbing systems, professional services can provide effective solutions. Call the best sewage damage mitigation company in Chapel Hill, NC. These include:

  • Drain Cleaning: Using techniques such as hydro jetting or mechanical augers to remove FOG and other debris.
  • Inspection: Video inspections to identify the extent and location of blockages.
  • Repairs: Addressing damage caused by FOG buildup, including pipe replacement or sealing.
  • Preventative Maintenance: Regular servicing of grease traps and plumbing systems to minimize the risk of future blockages.


Protecting Your Plumbing System in Chapel Hill, NC

Fats, oils, and grease may seem like minor byproducts of cooking, but their impact on plumbing and sewage systems is significant. By understanding the role of FOG in blockages and adopting proper disposal practices, residents and businesses in Chapel Hill, NC can reduce the risk of clogs, backups, and environmental harm.

If you’re experiencing slow drains, recurring clogs, or other plumbing issues caused by FOG, contact a professional plumbing service in Chapel Hill, NC. With expert solutions and preventative measures, you can keep your plumbing system functioning smoothly and protect the environment from the damaging effects of FOG-related blockages.



Chapel Hill, North Carolina, is a vibrant and picturesque town known for its rich history, prestigious university, and thriving cultural and culinary scenes, making it one of the most dynamic and desirable places to visit or live in the Research Triangle region. Home to the University of North Carolina at Chapel Hill, one of the oldest public universities in the United States, the town exudes a unique blend of academic energy, Southern charm, and progressive spirit, attracting students, professionals, and visitors from around the world. Franklin Street, the heart of downtown Chapel Hill, is a bustling thoroughfare lined with locally owned shops, cafes, and restaurants, offering everything from casual dining to gourmet cuisine, and is especially lively on game days when Tar Heel fans fill the streets to support UNC’s renowned basketball team at the Dean E. Smith Center. History and culture enthusiasts will find plenty to explore, including the Morehead Planetarium and Science Center, which has educated millions since its opening in 1949 and once served as a training site for NASA astronauts. The Ackland Art Museum, located on the UNC campus, houses an impressive collection of European and Asian art, while the Carolina Performing Arts Center hosts world-class performances ranging from classical concerts to contemporary dance and theater productions. Nature lovers can enjoy the North Carolina Botanical Garden, a serene retreat featuring native plant collections, walking trails, and conservation exhibits, or explore the miles of scenic trails at Battle Park and the Carolina North Forest, which offer excellent hiking and biking opportunities. Sports fans can immerse themselves in the town’s deep-rooted basketball culture, attending a game at the Smith Center or simply experiencing the electric atmosphere of Chapel Hill’s sports bars and gathering spots during the college basketball season. For those looking to unwind, the town boasts a thriving craft beer and coffee scene, with popular spots like Carolina Brewery and Top of the Hill offering locally brewed beers and scenic rooftop views, while coffee aficionados can enjoy a cozy atmosphere at places like Open Eye Café and Perennial Coffee. Chapel Hill also hosts a variety of annual events, such as Festifall, a beloved street fair featuring local artists and performers, and the Tar Heel 10 Miler, a race that brings runners from across the country to experience the town’s scenic beauty. Music lovers can catch live performances at the iconic Cat’s Cradle in nearby Carrboro, a legendary venue that has hosted some of the biggest names in indie rock, or visit Local 506 for an intimate concert experience. With its walkable downtown, eclectic mix of dining and entertainment options, and strong sense of community, Chapel Hill continues to be a town that blends tradition with innovation, offering residents and visitors alike a rich cultural experience in one of North Carolina’s most charming and lively destinations.

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