The Dirty Truth: How Much Plastic Water Bottles Really Contribute to Pollution (2024)

Summary:

Plastic Bottles are nasty little things, that pollute the enrivonment across their full lifecycle.

• The production uses extensive resources, and emits harmful chemicals and greenhouse gases
• The usage emits microplastics and chemicals into drinking water that harms human health
• The disposal is responsible for a majority of marine wildlife deaths and causes significant air pollution 

The extent to which plastic bottles actually harm our planet will blow your mind.

--------------------------

 

Quick heads-up: This article contains affiliate links. In some cases we recommend partner products that we are convinced of, rather than distributing the products ourselves. If you click these links and buy something, we may earn a small commission, while you can save money. Call that a win -win -win 😊.

 

Environmental Pollution is The Challenge of Our Century

Pollution is everywhere. In our air, in our water, in our soil.

What sounds melodramatic and exaggerated has become the reality of our lifetime.

Air pollution kills 7 million people every year. Microplastic has been found in human lungs and even infant blood. And it is estimated that 10% of cancer cases are caused by some form of pollution.  

 

In our new series "The Dirty Truth", we explore everyday items and the role they play in the big theme of pollution. Lastly, we share helpful tips how all of us can reduce pollution in our lives.

 

Today: Plastic Water Bottles.

 

Plastic Bottles in Numbers

Let's begin our journey with some eye-opening stats:

 

First up, a whopping 600 billion plastic bottles are used globally each year (29 billion in the US alone).

To put that number into perspective: if you'd start counting now with a perfect rythm and one number per second, it would take you 19 million years to count to 600 billion.

That means every single day, we're guzzling down 1.6 billion bottles - enough to circle the Earth multiple times. And if you break it down even further, that's 1.1 million bottles used every single minute! 

But wait, there's more to this. 

Between 2004 and 2021, the consumption and production of plastic bottles actually doubled!

Plastic production has experienced a true explosion over the past decades. A main driver in this is the oil and gas lobby, which is looking for alternative sales channels for their crude oil and natural gas due to price pressures

Now that we've revealed some eye-opening statistics, it's time to dive even deeper into the impact of plastic bottles.

We'll look at their contribution to pollution across their whole lifecycle - during production, usage, and disposal.

The environmental impact of the 600 billion plastic bottles already begins with their production.

 

How Plastic Water Bottles Pollute During Production

Plastic Bottle Production Process

The plastic pellets are poured into a machine that heats them to a very high temperature, so it becomes a thick liquid.

Then, the liquid plastic is injected into molds, where it hardens and sets into a bottle shape.

The bottle must be cooled almost instantly or it will lose its shape when gravity causes it to creep downward in its malleable, heated state.

The main sources of pollution from the production process are resource consumption and emissions. 

 

Resource Consumption

The production of plastic bottles uses invaluable resources, including crude oil, energy, and water. 

 

 

Researchers estimate that water bottle production uses around around 2000 times the energy needed to produce tap water.

Taking into account the additional energy required to

• manufacture plastic
• fabricate the plastic into bottles
• process the water
• fill and seal the bottles
• transport the bottles
• chill the bottles for use

But crude oil consumption and energy are only a part of the equation.

Just imagine the good you could do with that much water.

You could, for example single-handedly solve the worlds water problem.

 

Plastic Bottle Emissions 

Plastic production also is a very nasty process for the environment, when it comes to emissions.

Only recently in February 2023, inhabitants of East Palestine, Ohio needed to experience this at first hand. A tragic train accident blackened the skies in the area with toxic clouds.

The train was carrying vinyl chloride, a highly toxic chemical used in the production of plastic pipes.

While the long term impact of the released chemicals is still to be determined, short term effects were alarming.

 

As you know from above, most plastic bottles today are made from PET.

Their production process relies on chemical reactions, such as polymerization. It involves a variety of chemicals known to be harmful to both the environment and humans.

Firstly, let's look at the two main components of PET bottles, terephthalic acid and ethylene glycol.

1. Terephthalic acid: Terephthalic acid is a crystalline solid that is used in the production of PET as a main ingredient. It can be linked to various health issues like liver problems if it is ingested.
2. Ethylene glycol: A colorless liquid obtained from natural ethane gas. Ethylene glycol is the second main chemical used in PET plastic production. It is produced in so-called ethane cracker plants, which emit a whole number of hazardous air pollutants. They pose a huge risk to humans and the environment.

But these two chemicals aren't the only ones associated with plastic bottle production. The process uses a variety of chemicals (some of which are hard to pronounce with a straight face).

1. Antimony: Antimony is a cancer-causing catalyst used to speed up the production of PET plastic. It can leak into the environment during manufacturing and causes hazardous chemical pollution. Antimony trioxide, a form of antimony, causes headache, dizziness, nausea and vomiting, abdominal pain, and loss of sleep. It gets into the environment when PET bottles or scraps from production are littered.
2. Nickel: Nickel is a toxic emission generated during the production of PET resin. It can lead to lung cancer, nasal cancer, liver, and stomach problems.
3. Ethylbenzene: Ethylbenzene is used in the production of PET resin. It can find its way into the environment from manufacturing. The harmful chemical causes throat irritation, chest constriction, irritation of the eyes, and neurological effects such as dizziness.
4. Ethylene oxide: Ethylene oxide is another toxic emission produced during the production of PET resin. This hazardous material causes severe medical conditions such as damage to the brain and nervous system, miscarriages, decreased fertility, lymphoid cancer and breast cancer. 
5. Benzene: Benzene is another carcinogenic chemical needed to produce resin. It has effects like damaging bone marrow, causing anemia, damaging development of fetuses, and causing leukemia.  
6. Acetaldehyde: Acetaldehyde is produced during polymerization and can also appear during the bottle manufacturing process. It leads to memory loss, breathing problems, increased postnatal mortality, kidney damage, and strong irritation to the skin, eyes, and respiratory tract. 

While we mainly listed the effects on humans, you can only imagine what terrible effects these chemicals have on the planet.

Even if the residues from production and the wastewater are treated, there is always a remaining risk of chemicals leaking into nature.

If they do, they contribute to air and water pollution, contaminate the soil, and pose severe risks to humans, wildlife, and ecosystems.

Next to the materials directly emitted from manufacturing, plastic production is also responsible for significant greenhouse gas (GHG) emissions. 

In fact, estimates show that the plastic industry contributes 2 billion tonnes to all global GHG emissions. That's almost 5%, making plastic production one of the major drivers of global warming.

It is not easy to find an exact breakdown of how different plastic products are responsible for this GHG impact, but studies paint a good picture.

Concerning PET plastic bottles specifically, studies are ranging from estimates of 44g CO2 per bottle to up to 633g per bottle.

If we believe the high estimate, plastic bottles alone have a yearly carbon footprint equivalent to driving 74 million cars over 10.000 miles.

As we learned, plastic water bottles already are pretty nasty, even before they reach the shelf in your favorite grocery store.

But hold on, we're getting started.

 

How Plastic Water Bottles Pollute While Being Used

The pollution of water bottles continues on the shelf, when they are ready for your purchase.

The main concerns here are the release of microplastics, bacteria, and chemicals into the water.

 

Microplastics in Bottled Water

Microplastics are tiny plastic particles that can result from breaking down plastic items.

Plastic bottles are one of the main sources for microplastic ingestion. 

A worrying study even shows that 93% of bottled water contains microplastic.

With every liter of bottled water, we consume at least 10 particles of microplastic. In total humans consume about a credit card worth of plastic every week.

Even more shocking is the fact that researchers already were able to show traces of microplastics in human lungs, breast milk, and even infant blood.

While the long-term effects are still being investigated researchers already call microplastics the number one threat to humankind.

If you're interested in the topic, we have dedicated an article about microplastics and how to limit your exposure here. It contains more studies, sources, and helpful tips.

 

Chemicals in Bottled Water

Just as worrying is the release of chemicals into your drinking water from the plastic bottle.

We've already listed the many chemicals involved in plastic bottle production above. But while they can leak into the environment during production, these chemicals can also leak into your water from the plastic bottle.

In fact, an average of 22% of tested bottled water samples in a recent U.S. study found chemical levels above official health limits.

This is especially true, if PET bottles are used more than once, as this type of plastic is not produced to withstand multiple uses.

 

Bacteria in Bottled Water

It is also interesting to note that most bottled water contains more bacteria and less Fluoride than tapped water.

While consumers may buy into the expensive marketing by beverage companies, promising pure water full of minerals, they do not get what they are paying for.

Even better: you may end up paying a hundred or even a thousand times more for a brand name and actually receive water from a public source.

Studies have found that a quarter of bottled water comes from public water supply.

The only difference here is that the regulations for bottled water are actually less strict.

And because the overpriced water comes in a plastic bottle, it is at a higher risk of being contaminated with bacteria during the bottling process than highly regulated tapped water.

A study in Canada even showed that 70 percent of locally collected bottled water samples contained bacterial rates more than 100 times the official health limit. 

 

How Plastic Water Bottles Pollute After Their Lifespan

As you can imagine, the biggest pollution from plastic water bottles happens after their disposal.

Above, we already shed a light on the staggering numbers of plastic bottles being used every minute.

It won't come as a surprise that at their end of life, these bottles of course also need to be disposed of.

Once they are thrown out, they can pollute the environment in various ways. 

Let's look at three different scenarios. Throwing the bottles into the recycling bin, ditching them in the regular waste, and littering.

 

 

Plastic Bottles In the Recycling Bin

Only 9% of plastic waste is recycled globally (15% is collected for recycling, but 40% of that is disposed of as residues).

For PET (1) and HDPE (2) plastic bottles recycling rates are slightly better and they are the only types of plastic that are truly recyclable.

Some countries are shining stars in the recycling arena, like Norway, where an impressive 97% of plastic bottles are recycled. Go Norway!

But, alas, not all countries are hitting those green targets. In the United States, for instance, a disappointing 29% of PET bottles are collected for recycling. Only 21% of the bottles are actually made into recycled materials due to contamination.

The bottles that enter the proper recycling process are shredded, melted and formed into small pellets or fibre of recycled PET (rPET). This rPET can then be used for other plastic products, including new plastic bottles.

As raw material, the pellets or fibres re-enter the production process, where they are again at risk of polluting the environment. Production spills, energy consumption and other emissions discussed above also apply to recycled plastic. 

The good news (as reported by the plastic recycling industry and thus taken with a grain of salt) is that the rPET used in new products at least will end up using 79% less energy and 67% less emissions than virgin PET.

Nonetheless, most recycled PET will not end up as new bottles, but rather as fiber for clothes production or as packaging like thermoforms (those boxes that e.g., your muffins come in).

The reason is that processing rPET is complex and unfortunately especially the big manufacturers like Coca Cola, Pepsi, and Nestlé still mainly rely on virgin plastics.  

An excuse they use is that reusing rPET in bottle manufacturing is too expensive and it needs to be clear, colorless, and free from contaminants (e.g. from the labels).

Consequently, only 30% of the rPET ends up being used for new plastic bottles, while 45% is used for fibre and 12% ends up in packaging.

 

Plastic Bottles in the Regular Trash

Around 80% of plastic water bottles end up in landfills, where they take 450 years to break down.

While they break down, they will never biodegrade, but rather turn to microplastics leaking chemicals into the soil that harm the environment.

Incineration is another way plastic bottles are handled, but it is not a sustainable solution either.

Incineration creates significant CO2 and it is the major source of GHG in plastic waste management.

On average, a ton of burned plastic emits 2.9 tons of CO2 and globally plastic incineration accounts for 16 million tons of GHG yearly.

That's equivalent to 2.7 million homes (remember - his is the incineration only!).

While incineration reduces the need for landfill of plastic waste, it releases significant GHG and additional toxic substances into the atmosphere.

The fumes released during the incineration of plastics contain halogenated additives, polyvinyl chloride, furans, dioxins, and polychlorinated biphenyls (PCBs). 

As you can imagine, if something's that hard to pronounce, it probably shouldn't be inhaled. All fumes from burning plastic are harmful to the environment and public health. 

Therefore, throwing plastic bottles in the regular trash is not a sustainable solution, and it has a significant impact on the environment.

Littered Plastic Bottles

Unfortunately, a big portion of the mismanaged or littered plastic waste globally comes from plastic bottles.

It is estimated that 14% of littered waste actually stem from beverage containers and 8 million tons of plastic bottles enter our oceans every year.

That makes plastic bottles the second most polluting item in our oceans, following only plastic bags.

Once in the ocean, plastic bottles are killing wildlife and harming the environment. They are either consumed as a whole or breaking down into microplastics.

While it is difficult to estimate the exact number, sources estimate that 100 thousand marine mammals, over 1 million seabirds, and 100 million marine animals die from plastic every year*.  

If we continue our trajectory with increased pastic production and the current waste management, by 2050 we will have more plastic in the world's oceans than fish.

 

Drastically Reducing Our Plastic Usage Is The Only Way  

This article showed that plastic water bottles are a major contributor to environmental pollution.

• It starts with their production, which consumes valuable resources, emits harmful chemicals, and generates greenhouse gases.
• While we use them, they emit microplastics, chemicals, and bacteria into the drinking water, harming our health.
• After disposal, the pollution continues, as plastic bottles litter landfills, oceans, and ecosystems, releasing microplastics and toxins that harm wildlife and human health.

To address this critical issue, we must act urgently by reducing plastic usage, improving recycling rates, and adopting sustainable alternatives.

 

Please Ditch Plastic Water Bottles

The solution could not be more simple. Just finally get rid of bottled water. There really isn't a good reason to spend money for it in the first place.

Tapped water is already safer to drink than bottled water, but if you're not a fan of tapped water, consider investing in a water filter.

It will remove or significantly reduce the exposure to microplastics and chemicals in the water from your tap, making it more delicious and even safer to drink.

Filters are available both online and in most grocery stores.

Waterdrop is a great place to start, as they have a great range of filters. From simple pitchers to professional faucets, you'll find certified water filters.

With our SWOP partnership coupon, you'll save 10%. Just enter the following coupon code at the checkout: IIPYELNQGJ 

They currently only deliver to the U.S., so we had our pitcher with a bunch of replacement filters when we vsited friends.

We're super happy with the result though. No more water tasting like chlorine and no more plastic bottles.

Let's go back to a more conscious consumption of resources where we value what we have and avoid throwaway items.

 

Dittching plastic cleaning bottles 

If you want to take a step further, plastic bottles are just as prevalent in other areas of the household.

It is estimated that 2.5 billion plastic cleaner bottles reach the landfill every year. That includes everything from dish washing soap to all purpose cleaner and laundry soap.

Again, we got you covered, if you want to make a difference and fight the plastic flood. 

 

This XXL Starter Kit with 33 zero waste items will kickstart your journey to a life without plastic.

This natural dish wash set will drastically reduce your need for plastic and eliminate up to 5 plastic dish soap bottles.

 

Ditching plastic bottles for your personal care

Finally, you won't be surprised that your personal care items contribute a significant portion of the yearly plastic waste.

It is estimated that 250 million plastic bottles of body wash are disposed of every year in the US alone.

Add that same amount for shampoo and you got a huge opportunity to drastically reduce plastic in your household.

 

Check out our collections for zero waste hair care and zero waste body care and we're sure you'll find a couple of beautiful items that will make you want to ditch these plastic bottles in your bathroom forever.

 

We hope you enjoyed this article. If you want to read more like this, make sure to check out our Blog and follow us on Instagram. If you are interested in truly sustainable products, check out our Shop.

 

Want to read the other two articles in our series "The Dirty Truth"? Here you go!

The Dirty Truth: How Much Plastic Bags Really Contribute to Pollution (2023)

The Dirty Truth: How Much Plastic Straws Really Contribute to Pollution (2023)

 

If you want to engage in the discussion, feel free to leave a comment below.

 

*While the number of 100 million marine animals dying from plastic every year is floating around in the internet and is cited by many sources, we treat the number with a grain of salt, as we could not track down the original report.