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Fire & Water - Cleanup & Restoration

What Is Category 3 Water Damage?

12/31/2018 (Permalink)

Water Damage What Is Category 3 Water Damage? If a residence in Dunwoody, GA has sewage backup, you should arrange a professional sewage cleanup

Category 3 water is highly contaminated. This classification applies to standing water resulting from flooding or a sewage backup. Clean Category 1 water or Category 2 water from an appliance leak may also deteriorate if left standing for several days. Learn more about contaminants found in black water and flood or sewage cleanup methods.


Sewage overflow may contain bacteria and other microbes. Flood water often contains solid waste and a wide variety of contaminants. These may include:

  • Chemicals
  • Heavy metals
  • Pathogens

Contaminants may vary depending on the water source. Regardless of whether a residence sustains damage due to a flood or sewage overflow, homeowners should act quickly to limit primary water damage and secondary damage.


Black water poses a variety of risks to humans and animals. Some of these risks may include:

  • Infectious bacteria
  • Mold growth
  • Viruses

The best way to reduce these risks is to have experts pump out standing water and treat the affected area. Professional equipment and expertise will allow for faster mitigation.

Cleaning and Disinfection

Clean Category One water can simply be dried as long as homeowners or a water damage mitigation service act quickly. Category 2 and 3 water calls for thorough cleaning and the use of disinfectants. Depending on the type of flooding it may be necessary to:

  • Pre-treat the area with disinfectant
  • Tear out damaged porous materials
  • Clean and disinfect the area
  • Thoroughly dry the area

Experts may rely on air movers, fans, or dehumidifiers to promote ventilation and lower moisture levels in the air. These measures can reduce risks and prevent secondary damage, such as mold growth.

Black water can pose infection and mold risks. It is important to quickly remove standing water and thoroughly clean, disinfect, and dry the affected area. If a residence in Dunwoody,GA, sustains Category 3 water damage, homeowners should arrange for professional sewage cleanup.

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