Your cabinet is full of water bottles. Experts say keep these 2 and ditch the rest

If your kitchen cabinet is spilling over with water bottles, we’re willing to bet you probably don’t use most of them. And that’s OK, you really only need one (maybe two) trusty vessels, according to the water and hydration experts we spoke to.

“For most people, the best water bottle is simply the one they’ll use consistently,” says Annie Brees, a fitness and nutrition coach and the cofounder of Balance365. “And very often, that’s one they already have at home.”

Brees knows this might sound like “unsexy advice,” but she stands by it: “Most people don’t need another water bottle.” When choosing a bottle, Brees recommends choosing the one you’ll actually use during the day. Other experts, including Rich Razgaitis, CEO and co-founder of FloWater, and Jason Iuculano, an environmental health educator and founder of ZeroToxins, say you should also consider the material. Most water bottles are made of plastic, metal or glass, and there are meaningful differences between them that can help guide your choice.

The search for the “perfect” water bottle

Believe it or not, the global water bottle market is projected to grow to nearly $15 billion by 2034, up from about $10 billion today, according to Fortune Business Insights. From Stanley and Yeti to Owala and Hydro Flask, water bottle brands are flooding the market (pun intended), with many claiming they have the one magical product.

But rather than buying into the hype, Brees sees this as a part of the “cultural shift toward optimizing everything.”

“We’re seeing it with things like proteinmaxxing, fibermaxxing, looksmaxxing,” she says, “and hydration is starting to follow suit.” Brees says this trend is leading some people to “overcomplicate hydration.”

“What used to be a simple habit now feels like it needs to be done perfectly: the right bottle, the right temperature, adding electrolytes, drinking water before coffee, hitting a specific ounce goal every day,” she says. “If you enjoy that level of detail, there’s nothing wrong with it. But for a lot of people, that level of optimization can feel overwhelming, making it harder to start at all.”

Instead, Brees recommends keeping things simple.

“What I try to encourage is a return to the basics,” she says. This means making sure you’re drinking enough water each day (about 11.5 to 15.5 cups for most adults, according to the Mayo Clinic) and doing whatever makes this easiest for you, brand names aside.

“In practice, something as simple as having a glass of water with meals and drinking throughout the day is more than enough for most people,” says Brees.

The water bottles worth keeping

Stainless steel and glass water bottles should be your go-tos, according to Razgaitis and Iuculano. While plastic bottles can be durable, lightweight and inexpensive, some may release small amounts of compounds into drinking water when exposed to heat, and studies suggest they can contribute to microplastics exposure over time.

“Stainless steel and borosilicate glass are both highly stable materials, which means they don’t leach contaminants into your water under normal use,” says Razgaitis, regardless of temperature or how many times they’re reused.

Stainless steel water bottles

Stainless steel water bottles are a top choice among the experts Yahoo spoke with. Razgaitis says his stainless steel bottle is his daily driver when traveling, in the car or at the gym, citing brands like Hydro Flask and Owala as favorites. “Stainless steel will last and last,” he says. (Hydro Flask also snagged the top spot on Yahoo’s list of the best water bottles of 2026.)

Brees also named Owala as a brand to consider, while Iuculano recommends EcoVessel and Klean Kanteen as top-tier metal water bottle brands. (I’ve personally used Klean Kanteen for more than 20 years.)

When choosing a metal water bottle, Iuculano says it’s extremely important to make sure it doesn’t have a lead core, warning that some cheap metal water bottles available online do. He says looking for codes like 304, 18/8 and 18/10 can help confirm you’re buying real stainless steel.

Glass water bottles

When it comes to purity, borosilicate glass is one of the best options, according to Iuculano. Because glass is inert, factors like temperature and time left in the bottle have virtually no effect on water quality, he says. Iuculano cites Civago as the best glass water bottle brand he’s tested.

While he prefers stainless steel in almost every situation, Razgaitis says he uses glass vessels for water at home — “something simple like a mason jar.” He recommends Lifefactory as a solid choice for glass water bottles, and Yahoo editors agree, naming Lifefactory the best glass water bottle overall.

Of course, there’s one obvious drawback to using a glass container for water and that’s because “it’s more prone to breaking,” says Iuculano. Most glass water bottles (like the picks below) come with silicone sleeves to help with durability.

What about plastic water bottles?

A consistent message from the experts we spoke to is that plastic may not be the best choice for a reusable water bottle, particularly for those concerned about material exposure. Instead, they suggest considering nontoxic water bottle alternatives or looking more closely at how the bottle is made.

Iuculano points to compounds such as PFAS, phthalates and other plasticizers that, under certain conditions, like prolonged heat exposure, may migrate into liquids. For those who prefer plastic, he recommends harder plastics like Tritan, which are typically made without BPA or BPS and are designed to be more stable in everyday use.

Still, opting for BPA- and BPS-free plastics may not address all concerns, Razgaitis notes.

“BPA was just the chemical we finally got around to testing,” he says, adding that research into other compounds in plastics is ongoing.

For people who rely on single-use plastic water bottles daily, Razgaitis suggests reconsidering that habit, citing both environmental impact and potential material exposure over time.

For those set on plastic, bottles made from materials like Tritan — and clearly labeled as BPA- and BPS-free — may be a more durable and lower-exposure option compared with some alternatives.

Other water bottle features to consider

Razgaitis says it’s best to opt for a wide-mouth bottle, “so you can actually clean it.” He also recommends making sure the lid fully disassembles for proper cleaning and avoiding bottles with complex gaskets and crevices that can trap moisture. The more nooks and crannies your bottle has, the harder it will be to clean and the likelier it is to harbor bacteria.

Beyond all the technical specs, Brees argues that what actually drives hydration is how convenient your water bottle is to use, whether you enjoy drinking from it and where you keep it throughout the day. Rather than relying too heavily on recommendations, find a bottle you like using that’s easy to carry.

At the end of the day, a new water bottle for the gym and beyond can support your hydration habit, “but it doesn’t create the habit,” says Brees. Chances are, you already have the perfect hydration tool waiting in your kitchen cabinet.