Firehouse Subs: Free sub with water donation on Saturday, August 7

Donate an unopened 24-pack of bottled water to your nearest Firehouse Subs on Saturday, August 7, 2021 and receive a FREE Medium Sub!

The donated water will be given to local first responders and community organizations. According to the event page, the water will be "used during the hot summer months when people are more likely to get dehydrated."

There is a limit of one sub per person. The H20 for Heroes free sub offer is available from 10:30 am to 9 pm at participating locations. According to their Facebook page, all locations are participating other than non-standard U.S. locations like airports. The deal is not valid with any other coupons or offers or on online or delivery orders.

See the details on their Facebook event page.