TL;DR: As of March 27, S'well is running a 25% off sitewide sale and free shipping with code SELFCARE.
Unless you live in an area with unsafe drinking water, there's no real need to stock up on cases of plastic bottled water. Get a reusable bottle to keep you hydrated — you're most likely spending way more time at home (within steps of your sink) so you can just keep refilling a bottle as you need.
SEE ALSO: What everyone should know about drinking tap water
A S'well bottle is better for the environment than single-use plastic bottles and it will keep your drink cold for up to 24 hours. Right now, S'well is running a sitewide 25% off sale with free shipping if you use the code SELFCARE. Read more...More about Drink, Sustainability, Mashable Shopping, Reusable Water Bottle, and Culture