If you regularly buy bottled water, have you ever stopped to think what it does to the environment?
The environmental impact of drinking bottled water is up to 3500 times higher than tap water ("Health and environmental impacts of drinking water choices in Barcelona, Spain," Villanueva et al, 2021). The sheer scale of the impact is frightening.
The world produces 600 billion plastic bottles and containers each year (UN University), which creates 25 million tonnes of PET plastic waste. 85% of this winds up in landfills or unregulated waste.
Americans purchase approximately 50 billion water bottles per year (Earth Day), which is 8.33% of the global total. That’s almost 137 million plastic water bottles EVERY DAY, an average of around 13 bottles per month for every person in the US.
Below, we examine the environmental and health effects of single-use plastic bottles, and the arguments for and against banning them.
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Plastic water bottles are made from polyethylene terephthalate (PET), which has the #1 plastic recycling symbol.
PET is recyclable up to 3 times. After this, the polymer chains degrade too much for reuse ("Mechanical Recycling of Thermoplastics: A Review of Key Issues," Lamtai et al, 2023).
The estimated recycling rate for PET bottles is just 23.2% (EPA, 2024).
Single-use water bottle caps are usually made from high-density polyethylene (HDPE, #2) or polypropylene (PP, #5).
Both HDPE and PP are recyclable. But bottle caps are rarely recycled, according to Signe Gilson in Scientific American. That's because they’re too small to be reliably sorted by most machinery, and can even damage equipment at processing facilities.
The fact that so few plastic bottles are recycled is just one of the reasons why they are so harmful to the environment.
Plastic bottles harm the environment in the following ways.
Let's explore each of these factors in more detail.
PET plastic, the material used to make most single-use water bottles, is derived from petroleum and natural gas feedstocks. Its production depends directly on fossil fuels both as a raw material and as an energy source.
It takes 17 million barrels of crude oil each year to make the 50 billion PET bottles used in the US (Earth Policy Institute / Pacific Institute). That's enough to power over 1 million cars for a year.
Manufacturing PET resin itself is energy-intensive. It requires 70–83 megajoules (MJ) of energy per kilogram, or between 1 - 2.5 MJ per 500 ml bottle ("Life Cycle Environmental Impact of PET Water Bottles," NIH Environmental Management System).
Making water bottles from plastic is, ironically, incredibly water-intensive.
It takes 660ml (22.3 oz) of water to make a 500ml (16.9 oz) plastic water bottle in the US (NPR / International Bottled Water Association).
Single-use plastic bottles are a major contributor to climate change.
Plastic production alone accounts for roughly 3-4% of global greenhouse gas emissions (EPA).
Each 500ml (16.9 oz) PET bottle emits between 30-80 g (0.07-0.18 lbs) of CO₂, adding up to tens of millions of tons annually worldwide (NIH Environmental Management System / Beverage Industry Environmental Roundtable).
In the US, the vast majority of plastic bottles end up in landfills
Although PET is among the more recyclable types of plastics, only about 23% are actually recycled in the US.
This leaves more than three-quarters (around 38 billion bottles a year) that are not recycled, and end up in landfills, incinerators, or the ocean.
Beverage bottles and containers account for 7.27% of overall global plastic pollution (rePurpose Global).
4 billion pounds of beverage container waste enters the oceans each year, which equates to around 12% of total ocean plastic ("An inshore–offshore sorting system revealed from global classification of ocean litter," Morales-Caselles et al, 2021).
Once plastic waste enters the environment, it never goes away because plastic is not biodegradable.
Instead, it breaks down into smaller pieces known as microplastics (pieces smaller than 5 mm) and nanoplastics (pieces smaller than 100 nm).
Animals and marine life mistake these tiny plastic particles for food. Microplastics have been found in the digestive systems of mussels, fish, and even whales (Marine Debris Program).
As plastic bottles break down or are exposed to heat, they release potentially harmful chemicals into water and ecosystems.
Landfill water, called leachate, forms when rain or moisture filters through waste and collects chemicals that wash out of that waste.
Studies found that bottles and other plastic waste break down and release antimony, bisphenol A (BPA), PFAS, nonylphenols, and phthalate acids into leachate.
The amount of BPA measured ranged from 1.3 micrograms per liter (µg/L) up to 17,200 µg/L, depending on landfill age and conditions ("Plastic Waste Degradation in Landfill Conditions: The Problem with Microplastics, and Their Direct and Indirect Environmental Effects," Wojnowska-Baryła et al, 2022).
These chemicals are known to disrupt hormones in animals and may contaminate groundwater if leachate escapes.
Leaching is one way in which chemicals from plastic beverage bottles get into the water cycle and food chain. This has negative health impacts for animals and humans.
Even after they become trash, discarded plastic bottles continue to harm human health in the following ways.
Let's look at the health effects of plastic bottles in more detail.
Microplastics in our drinking water and food chain inevitably enter our bodies.
"Scientists have estimated that adults ingest the equivalent of one credit card per week in microplastics," according to Stanford Medicine.
Microplastics are now found in many parts of the human body, including the lungs, blood, and brain. Microplastic exposure is linked with digestion problems, inflammation, and stress on cells.
Patients with microplastics in plaque in their arteries have an increased risk of death from strokes and heart attacks ("Microplastics and Nanoplastics in Atheromas and Cardiovascular Events," Marfella et al, 2024).
Some single-use plastic bottles contain a chemical called Bisphenol A (BPA). This chemical seeps into the water contained in the bottle and enters our body.
BPA is a weak synthetic estrogen that can block or mimic the hormone estrogen and other sex hormones. This disrupts the natural balance of hormones in the body and also disrupts the thyroid system.
Estrogen can cause several different types of breast cancer ("Oestrogen exposure and breast cancer risk," Travis RC, Key TJ, 2003), and it’s believed that BPA can do the same.
This is why most modern reusable water bottles are BPA-free.
Lab tests show that phthalates (chemicals used to soften plastics) leach out of plastic waste when it's exposed to water or UV light ("Phthalates released from microplastics can't be ignored," Liu et al, 2024).
As mentioned earlier, phthalates are one type of chemical that leach from bottles in landfills. They enter waterways and contaminate drinking water or accumulate in seafood, which we then consume.
A broad scientific review (covering almost 800 studies) found strong links between phthalate exposure and problems like infertility, developmental delays, obesity, and metabolic diseases (The Australian).
Antimony trioxide is used as a chemical catalyst to help make PET plastic. It is another chemical that is susceptible to leaching from plastic waste in landfills.
The US Agency for Toxic Substances and Disease Registry (ATSDR) notes that antimony can be toxic. Long-term exposure damages the heart, liver, or kidneys, and is considered possibly cancer-causing (Toxicological Profile for Antimony and Compounds).
Antimony leaches more quickly under heat. For example, the ATSDR states that bottled water stored at 80 °C (176 °F) for hours exhibited antimony levels up to 7.8–9.7 micrograms per liter (µg/L). This far exceeds typical drinking water limits of 6 µg/L in the US.
This is one reason why it is not advisable to drink from bottles of water that have been left to warm up in the sun or a hot car.
Many Americans have empty disposable plastic water bottles lying around the house. To try to be more eco-friendly, they refill them from the tap and use them multiple times.
However, it can be dangerous to reuse a single-use water bottle.
The shape and design of most single-use water bottles make them challenging to clean properly. As time passes, the water you’re drinking from these bottles contains more and more bacteria. Eventually, this buildup of bacteria will cause you to become ill.
Reusable bottles are much easier to clean (most are even dishwasher safe) and better for your overall health. That's why they're the best solution to reducing waste from plastic bottles.
If you're concerned about the human and environmental damage from plastic bottle waste, the best way to reduce it is to stop buying them. Carry a reusable bottle when you're out, and drink filtered tap water at home.
Reusable water bottles are the most effective alternatives to plastic bottles because they create zero waste.
A well-made reusable water bottle from brands like Healthy Human or Hydro Cell lasts a lifetime. They're easy to clean, light, convenient to carry, and look cool with a range of attractive designs.
Earlier, I mentioned that in the US, plastic water bottle usage averages 13 per person per month. So, for every person using a reusable water bottle for a year, we would save 156 discarded water bottles going to landfill.
That might not sound like a lot, but it soon adds up. Based on these numbers, it would only take 6,410 people to save one million plastic bottles from landfill every year.
If you drink bottled mineral water for purity reasons, consider a water filter jug. This will boost the purity of your tap water even further.
Brita filter jugs are a popular brand. They cost from under $25 on Amazon.
Keep the jug in the fridge, and you’ll always have chilled filtered water to hand. Just make sure you go for a BPA-free jug and recyclable filters.
If your budget allows, consider upgrading to a water filtration system that gives you ultra-clean filtered water right from the tap.
Consider lobbying your local government representative to reduce the amount of single-use plastic water bottles used in shops, cafes, and restaurants in your local area.
Sufficient lobbying may eventually lead to plastic drinks bottles being banned.
Environmental organizations such as Greenpeace argue that plastic bottles should be banned, while industry organizations argue that they should not.
Regional and municipal bans already exist in Concord, Massachusetts, South Lake Tahoe, California, and Truckee, California. A 2022 ban on single-use plastic in US national parks was rescinded in May 2025.
Here are the key arguments for and against a ban.
Organizations, including Greenpeace and Beyond Plastics, argue for a ban on the use of plastic bottles for the following reasons.
Industry bodies such as the NAPCOR (National Association for PET Container Resources) argue that banning PET bottles is counterproductive. They cite the following reasons.
Organizations such as the NAPCOR clearly have a vested financial interest in PET continuing to be used for drink containers.
That's because, despite the growing popularity of reusable bottles, selling bottled water is still a multi-billion-dollar industry.
Estimates vary on the size of the US bottled water industry. It's worth between $29.9 billion (Circana) and $47.42 billion (Grand View Research). These sources use different methodologies, but even the lower figure indicates a valuable market sector that interested parties would want to protect.
Bottled Water.org reports that companies involved in producing, distributing, and selling bottled water collectively employed about 230,000 Americans, with total wages and benefits around $10 billion.
We still don't know exactly how long it will take, because plastic hasn't existed long enough for a single bottle to have decomposed.
Some estimates state that it will take between 450 and 500 years, while others state that they will never fully decompose at all.
Bottled water is expensive because you’re paying for many unnecessary steps from the source to your mouth.
The bottled water company needs to make plastic water bottles. The plastic water bottle then needs to be filled with water. The bottled water then needs to be packaged and shipped to the store. The bottled water company passes the cost of all this on to you, plus a nice, healthy profit margin for themselves.
Yes. Canada has banned several single-use plastic items such as bags, straws, and stirrers. But plastic bottles are not included.
The current insatiable global appetite for bottled water is having multiple damaging effects.
It’s common knowledge that plastic water bottles affect the environment. However, the lesser-known effects on human health are eye-opening!
A plastic water bottle consumes massive amounts of natural resources during manufacture. They leach toxic chemicals into the water we drink. They then clog up our landfills and oceans.
Carrying a reusable bottle and using refilling stations or water fountains is a minimal amount of effort to ensure healthier drinking water and less plastic waste for all.
