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  • Writer's pictureBrady Grewe

Demystifying Water Damage: Understanding the Different Categories

Updated: Jul 7

Water damage comes in various forms, each with unique characteristics and potential hazards. One of the first things I ask homeowners when I get a call about water damage is “what is the source of the water damage”. I ask this so I can help homeowners know what to expect for the process of cleaning up the water and how to stay safe but also because I need to know how to prepare to ensure my safety. I want to shed some light on the different categories of water damage, to empower homeowners to identify and address them effectively.


Deciphering the Categories of Water Damage

Water damage isn't a one-size-fits-all scenario. Understanding the different categories of water damage is essential for effective mitigation and restoration. Let's dive into the intricacies of each category and learn how to navigate them with precision and expertise.

1. Category 1: Clean Water Source

Category 1 water damage involves clean water from a sanitary source, such as broken water supply lines, faucets, or melting snow. While this type of water may initially pose minimal health risks, it can quickly degrade into more contaminated categories if left untreated. Category 1 water can also become contaminated by encountering things like animal feces. 

2. Category 2: Significant Contamination

Category 2 water damage, formerly known as grey water, contains significant levels of contaminants that may cause discomfort or illness if ingested. Sources include dishwasher or washing machine overflow, sump pump failures, or stagnant water infiltration.

3. Category 3: Highly Contaminated

Category 3 water damage, formerly known as black water, is highly contaminated and poses severe health risks. It typically contains sewage, chemicals, or other hazardous substances. Flooding from rivers or streams, toilet overflows with feces, and standing water that has developed microbial growth are common sources. 


Understanding the Implications:

Each category of water damage requires a tailored approach to mitigation and restoration. While Category 1 incidents may be manageable with DIY cleanup efforts, Category 2 and Category 3 incidents demand professional intervention due to the health risks involved. The IICRC has developed standards for the industry professionals to follow. This ensures that everything is mitigated and cleaned to ensure your home is healthy to live in. 

Mitigation and Restoration Strategies:

Effective mitigation and restoration strategies vary depending on the category of water damage. From thorough extraction and drying techniques to disinfection and sanitization measures, Renew by Grewe Restoration employs industry-leading practices to restore affected properties safely and efficiently.


Understanding the different categories of water damage is paramount for homeowners facing water-related emergencies. By recognizing the nuances of each category and enlisting professional assistance when needed, homeowners can mitigate risks, safeguard their properties, and restore peace of mind.


Dishwashers are a common cause of Water Damage
Dishwashers are a Common Cause of Category 2 Water Damage

Warm regards,

Brady Grewe

Owner

Renew by Grewe Restoration

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