WEST PALM BEACH, Fla.– Residents and workers of South Florida experienced a high heat index Tuesday, WPTV reports.

The temperature, in combination with the humidity, created extremely unforgiving working conditions for workers like Sean, a mail carrier in Palm Beach County.

Sean says he drinks more than a gallon of water a day to replenish his body and stave off dehydration.

The Centers for Disease Control urge those who work outside for extended periods to consume at least 8 ounces of water every 15 to 20 minutes.

August will see these conditions worsen and an increased potential for heat-related illnesses.

In an effort to combat this issue, a heat illness prevention bill was proposed that would require supervisors to identify heat illness and provide first aid in the field.

This bill was not passed and failed in March of this year.