When dealing with unknown hazmats near water, what is a key precaution?

When dealing with unknown hazmats near water, what is a key precaution?

• A. Do nothing to water sources.
• B. Dilute spills with water immediately.
• C. Evacuate the area but ignore runoff.
• D. Isolate the area, prevent run-off, and protect water sources from contamination.

Answer: (D)

Containment and protecting water sources from contamination is the essential precaution. When unknown hazmats are near water, the priority is to isolate the area, prevent runoff, and shield streams, lakes, and groundwater from exposure. Diluting the spill with water can spread the substance further, change its behavior, or trigger uncomfortable chemical reactions, making the hazard harder to control. Evacuation is important for protecting people, but without stopping the spread to water sources, environmental and public health risks remain high. Implement barriers, berms, absorbent containment, and coordinate with HazMat responders to keep the contaminant out of water supplies while you establish a safer perimeter.