CPR Water Loss Classification & Category Standards

Question 1

According to the IICRC S500 standard, which category describes water from a clean, sanitary source that poses no substantial risk from dermal, ingestion, or inhalation exposure?

Accepted Answer

Category 1

Answer

Category 1 water originates from a sanitary source such as a broken supply line or a sink overflow, posing no significant health risk.

Question 2

Category 2 water is sometimes referred to as 'grey water' because it:

Accepted Answer

Has significant contamination that may cause discomfort or illness if contacted

Answer

Category 2 water contains significant contamination with potential to cause discomfort or illness upon exposure, but does not contain sewage.

Question 3

A sewage backup originating from beyond the toilet trap is classified as which water category under IICRC S500?

Accepted Answer

Category 3

Answer

Sewage and water originating from beyond the toilet trap contains pathogens and unsanitary agents, classifying it as Category 3 — the most contaminated level.

Question 4

Which of the following is an example of a Category 1 water loss source?

Accepted Answer

Broken supply line to a washing machine

Answer

A broken supply line carries clean potable water, making it a Category 1 source with no contamination risk.

Question 5

If Category 1 water is left untreated and sits in a structure for 24–48 hours, what reclassification may occur?

Accepted Answer

It may be reclassified as Category 2 or Category 3 due to microbial growth

Answer

Standing water promotes microbial amplification, which can elevate Category 1 water to Category 2 or 3 based on contamination levels over time.

(CPR) Certified Professional Restorer Practice Test

(CPR) Certified Professional Restorer Practice Test

CPR Water Loss Classification & Category Standards