I’ve also reached out to an expert to help answer frequently asked questions, like how to choose an environmentally friendly water bottle, how to clean one, and how long you can keep water in one.

Water Bottles – Built NY

The edition we tested has the surprisingly large capacity of 750ml within its deceptively small A5 footprint. The brand combines both form and function seamlessly, providing a fresh take on reusable water bottles and lunch boxes…always with durability in mind. Its founder originally evolved a way to use IV drop bottles to carry water in for expeditions, but the company’s bottles have come a long way since then.Not only is it safe, but it is very durable and infinitely recyclable,” says Natalie Byrne, content marketing manager at Go Outdoors. While it may be tempting to reach for the cheapest one or the first bottle you see, you may end up regretting it. The bottles are made with a perfectly sized drinking hole to drop these cubes inside and flavour the water – hence the name, Waterdrop. This bottle is not only our top pick for a stainless steel water bottle, but it's also a great choice for taking on the go whether you are hiking, camping or traveling. A sports cap can be bought separately for the bottle, which is a good alternative for activities or grabbing while driving.

Built Water Bottle Ice Cube Tray, BPA Free Easy Release Built Water Bottle Ice Cube Tray, BPA Free Easy Release

BPA stands for Bisphenol A, an industrial chemical compound used in the manufacturing of strong plastics. It can also be used for milk, wine or any other liquid you wish to keep cold, so it’s great for camping trips, commutes and days at the beach, too. Made from lightweight plastic, it’s a compact size for its 600ml capacity and includes a small carry loop that could be clipped to a backpack. All three parts – bottle, cover and straw – are top-rack dishwasher-safe and you’ll be pleased to know it’s 100% BPA free.Thankfully, this Be-Active Glass Water Bottle comes with soft silicon for additional grip, making it a great option to use indoors, at home or even at the gym.