What is a critical sign that someone may be experiencing an RWI?

Gastrointestinal distress is a critical sign that someone may be experiencing a Recreational Water Illness (RWI). RWIs are often caused by exposure to contaminated water, and one of the most common effects of such exposure is gastrointestinal symptoms. These may include diarrhea, nausea, vomiting, or abdominal pain, all of which fall under the umbrella of gastrointestinal distress. Recognizing these symptoms is vital for lifeguards and pool operators to ensure quick identification and an appropriate response to protect the health of others using the aquatic facility.

The other options listed do not typically align with the common symptoms associated with RWIs. For example, intense headaches and stomach cramps could arise from a variety of other health issues unrelated to water exposure, while a rapid energy boost is not a symptom typically linked to an RWI and may suggest an unrelated medical condition or a temporary increase in adrenaline. Understanding these key symptoms helps in effectively managing public health in recreational swimming environments.