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Shane Blanchard

What the water can leave behind during Toilet Overflows and Plumbing Backups. Let's test for it.

General Information

This blog provides an in-depth guide on sewage bacteria testing, covering everything from the basics of why it's important to the process of testing and the potential health risks associated with sewage bacteria exposure. Whether you're a homeowner, contractor, or concerned individual, this blog offers valuable information to help you stay safe and protect others from the dangers of sewage bacteria.


Testing for sewage bacteria in homes is necessary to ensure that the plumbing system is functioning correctly and to protect the health of individuals living in the house. The most common types of sewage bacteria tested for in homes are E. coli, enterococcus, and total coliforms.

Causes: Sewage bacteria can enter the home plumbing system through several ways, such as a blocked or damaged sewer line, improper disposal of wastewater, or flooding. These bacteria can cause health hazards to individuals, especially those with weakened immune systems, young children, and the elderly.

Hazards: Exposure to sewage bacteria in the home can cause various health hazards, including gastrointestinal illnesses, skin infections, respiratory infections, eye and ear infections, and other health problems.

Reasons for testing: There are several reasons for testing for sewage bacteria in homes:

  1. Health concerns: Testing for sewage bacteria is necessary to ensure that the home's water supply is safe and does not contain harmful bacteria that can cause health problems.

  2. Damage assessment: Testing for sewage bacteria is crucial after a flood or plumbing backup to determine the extent of damage and contamination.

  3. Regulatory compliance: Testing for sewage bacteria is necessary to comply with regulations and guidelines set by local, state, and federal agencies.

  4. Preventive measures: Testing for sewage bacteria is an essential preventive measure to identify and correct plumbing problems before they cause health hazards or extensive damage to the home.


In summary, testing for sewage bacteria, including E. coli, enterococcus, and total coliforms, in homes is necessary to protect the health of individuals living in the house, assess damage, comply with regulations, and take preventive measures.

Did you Know?

Sewage bacteria FAQs (Frequently Asked Questions) are common questions and answers related to sewage bacteria, their hazards, testing, and prevention. Some common sewage bacteria FAQs include:

  1. What are sewage bacteria? Sewage bacteria are bacteria that originate from human or animal waste and are commonly found in sewage. The most common types of sewage bacteria include E. coli, enterococcus, and total coliforms.

  2. What are the health hazards of exposure to sewage bacteria? Exposure to sewage bacteria can cause a range of health hazards, including gastrointestinal illnesses, skin infections, respiratory infections, eye and ear infections, and other health problems.

  3. How can I test for sewage bacteria in my home? Sewage bacteria testing can be done by collecting samples of water or surfaces and sending them to a laboratory for analysis. Swab sampling is a common method for collecting samples from surfaces that may be contaminated with bacteria.

  4. How can I prevent exposure to sewage bacteria? To prevent exposure to sewage bacteria, it is important to ensure that your home's plumbing system is functioning correctly and that wastewater is properly disposed of. Regular cleaning and disinfection of surfaces that may come into contact with sewage can also help to prevent bacterial contamination.

  5. What should I do if I suspect that my home is contaminated with sewage bacteria? If you suspect that your home is contaminated with sewage bacteria, it is important to contact a professional to assess the situation and perform necessary remediation and disinfection. It is also important to seek medical attention if you or anyone in your household is experiencing symptoms of bacterial infection.


In summary, sewage bacteria FAQs provide answers to common questions related to the hazards, testing, prevention, and treatment of bacterial contamination. It is important to educate yourself on the risks associated with exposure to sewage bacteria and to take appropriate measures to prevent and address contamination.

Inspection Process:

A sewage bacteria inspection in a residential home using swab samples involves collecting samples from surfaces that may be contaminated with bacteria. The purpose of this inspection is to determine if there is any bacterial contamination in the home's plumbing system that could pose a health hazard to the occupants. The most common types of bacteria that are tested for during a sewage bacteria inspection in a residential home are E. coli, enterococcus, and total coliforms.

The following are the steps typically taken during a sewage bacteria inspection using swab samples in a residential home:

  1. Inspection: A visual inspection of the home is conducted to identify areas of potential bacterial contamination, such as around toilets, drains, and sinks.

  2. Swab Sampling: Swab samples are collected from the identified areas of potential bacterial contamination using sterile swabs. The swabs are rubbed firmly over the surface to collect any bacteria that may be present.

  3. Transport: The swabs are then placed into sterile transport tubes or directly onto culture plates for transport to a laboratory.

  4. Laboratory Analysis: In the laboratory, the swabs are used to inoculate culture media specific for the type of bacteria being tested. The culture plates are then incubated under specific conditions for a period of time to allow bacterial growth.

  5. Results: After incubation, the culture plates are examined for the presence of bacterial colonies, which can be identified and quantified. The number and type of bacteria present can indicate the level of contamination and potential health hazards associated with the surface.

  6. Recommendations: Based on the results of the inspection, recommendations may be made for remediation and disinfection of the affected areas to prevent future bacterial contamination.


In conclusion, a sewage bacteria inspection in a residential home using swab samples is a valuable tool for identifying potential bacterial contamination in the home's plumbing system. The inspection can help to protect the health of the occupants by identifying and addressing areas of potential health hazards associated with bacterial contamination.

When do I need Sewage Bacteria Testing?

There are several scenarios in which sewage bacteria testing may be justified:

  1. After a sewage backup: If your home experiences a sewage backup or flooding, it is important to have the area tested for bacterial contamination. Sewage backups can introduce harmful bacteria into your home and pose a health risk to you and your family.

  2. Before purchasing or renting a property: It is important to test for sewage bacteria before purchasing or renting a property to ensure that the plumbing system is functioning correctly and that there is no risk of bacterial contamination.

  3. After a plumbing repair or installation: After any plumbing repair or installation, it is important to test for sewage bacteria to ensure that the repair or installation was successful and that there is no risk of bacterial contamination.

  4. If you or anyone in your household is experiencing symptoms of bacterial infection: If you or anyone in your household is experiencing symptoms of bacterial infection, such as gastrointestinal illness, skin infections, or respiratory infections, it is important to test for sewage bacteria to identify the source of the infection.

  5. If you suspect that your home may be contaminated with sewage: If you notice a foul odor or see signs of sewage backup in your home, it is important to test for sewage bacteria to identify the source of the contamination and to take appropriate measures to prevent further contamination.


In summary, sewage bacteria testing may be justified in a variety of scenarios, including after a sewage backup, before purchasing or renting a property, after a plumbing repair or installation, if anyone in your household is experiencing symptoms of bacterial infection, or if you suspect that your home may be contaminated with sewage. Testing for sewage bacteria can help to identify the source of bacterial contamination and prevent health risks associated with exposure to harmful bacteria.

Bacteria Testing needed for Water Damage, Fire Damage, Flooding, Remodel, Renovations, Construction, or Permits in the following areas? We can help!

Santa Barbara County

Buellton, Carpinteria, Goleta, Guadalupe, Lompoc, Santa Barbara, Santa Maria, Solvang, Ballard, Los Alamos, Los Olivos, Mission Canyon, Montecito, Orcutt, Summerland, Isla Vista

Ventura County

Camarillo, Fillmore, Moorpark, Ojai, Oxnard, Port Hueneme, Santa Paula, Simi Valley, Thousand Oaks, and Ventura

Los Angeles County

Santa Clarita, Canyon Country, Newhall, Saugus, Valencia, Calabasas, Agoura Hills, Westlake Village, Hidden Hills, Woodland Hills, Tarzana, Northridge, Porter Ranch, Granada Hills, Sylmar, Sherman Oaks, Encino


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