Does Water Expire? Truth About Bottled Water Expiration Dates

Updated Jan 6, 2025 | 08:19 PM IST

SummaryBottled water is safe indefinitely if stored properly. Plastic bottles may release chemicals like BPA when exposed to heat. Tap water can be safely stored for up to six months.
Does Water Expire? Truth About Bottled Water Expiration Dates

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You've probably asked yourself too if that old bottle of water in your pantry is still good to drink? Water is life, yet there are remaining questions about the shelf life. Whether you are stockpiling for emergencies or wondering if that bottled water left in a heated car is safe to drink, understanding if and how water "expires" is essential. This article goes into the science behind water storage and its potential risks and practical tips to ensure your water will remain safe and consumable.

Water itself does not spoil or degrade. Chemically, pure water (H₂O) remains unchanged indefinitely. However, there are issues that arise due to the containers in which it is stored and the environmental conditions surrounding the storage.

In the United States, most bottled water has an expiration date. This labeling is often misunderstood as being an indication of the water's safety, but it mainly has to do with quality. The U.S. Food and Drug Administration (FDA) confirms that commercially sealed bottled water is safe to drink indefinitely if stored properly. Over time, though, the taste, smell, and even the appearance of water may change due to interactions with its packaging.

Role of Packaging in Water Safety

Plastic Bottles and Chemical Leaching

Bottled water is mostly packed in polyethylene terephthalate, PET plastic. Even though it is light in weight, resistant, and recyclable, this material is limited in other aspects. It leaches chemicals in trace amounts in the water if heated or placed under direct sunlight. For instance, do not leave your bottled water in the hot car for an extended period.

The next is bisphenol A or BPA. This chemical has been used to soften some plastics and is known for its hormone disruption. Many producers have shifted toward BPA-free materials, but older bottles and improper storage still pose risks. Bottles carrying recycling code #7 may be BPA-contaminated. There are also concerns over microplastics and long-term storage.

Microplastics and Long-Term Storage

Over time, the plastic in the bottle may leach into the water, causing some to question health risks. In 2019, one article published in the International Journal of Environmental Research and Public Health noted that these particles exist but are usually not at high enough concentrations to pose a problem if the water is properly stored.

Also Read: What Happens When You Drink Too Much Water?

How Long Can Water Be Stored Safely?

Bottled Water

Unopened bottled water, kept in a cool, dark place, remains safe to drink for years. But manufacturers often advise that it should be consumed within two years of its manufacture date for best quality. After this period, it may start showing off-flavors or odors due to contact with the plastic.

Tap Water

Tap water, under the Environmental Protection Agency (EPA), undergoes strict standards for safety. It can be kept in pure, BPA-free bottles up to six months. Afterward, it loses its fresh flavor or becomes dirty if not properly sealed.

Rainwater

Don't drink rainwater unless treated first. It usually contains contaminants that should not reach the human stomach. It should be used to water plants if not filtered and sterilized first.

Signs That Water Has Gone Bad

Water itself doesn't go bad, but extrinsic factors make it unsafe. Always discard water that has:

An off smell: An earthy, metallic smell indicates contamination.

Coloration: Greenish or bluish coloration signifies microbial growth or rust.

Unpleasant taste: A metallic or stale taste is a hallmark of degradation.

Froth or particles: Indicate dirt, germs, or other impurities.

How to Store Water Safely?

Avoid Heat and Sunlight

Store water in a cool, dark place and out of direct sunlight. Heat breaks down the plastic, allowing chemicals to leach out more easily.

Choose the Right Containers

For long-term storage, select BPA-free or food-grade plastic containers. The best alternatives are stainless steel and glass containers, which avoid all the risks that plastic poses.

Hygiene Maintained

Wash and sanitize the container before refilling. Always seal the lids so that no bacteria get inside.

Rotate Your Stock

Use a first-in, first-out rotation system with stockpiled water. This will mean that you will use the oldest water first to keep your water supply fresh.

Is It Safe to Drink Water Past Its Expiration Date?

The expiration date on bottled water is a mark of its quality, not safety. Although the water is safe to drink past this date, it is sensible to check it for any signs of spoilage as mentioned above. Tap water that has been stored for longer periods should be checked for clarity and odor before consumption.

Plastic bottles, although convenient, degrade the environment. Only a few percent of PET bottles are recycled, while the rest remain in landfills or oceans. Choose reusable containers and tap water whenever possible to minimize plastic waste and environmental damage.

Water is one of the most precious resources in this world, yet it can be safe only if it is kept appropriately. People may tell you that water does not expire, but the fact is that packaging materials, exposure to the environment, and storage conditions may affect the quality of the water. Proper storage techniques, opting for BPA-free containers, ensure that water remains fresh, safe, and ready for consumption at any time.

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Cyclospora Parasite Spreads to More US States: Foods to Avoid Right Now

Updated Jul 2, 2026 | 06:00 PM IST

Summary The Michigan Department of Health and Human Services (MDHHS) reported on July 1 that 170 people across seven counties in Michigan had been infected as of June 30. The parasite spreads through food or water contaminated with human feces and is not spread directly from person to person.
Cyclospora Parasite Spreads to More US States: Foods to Avoid Right Now

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Health officials in the United States are investigating a growing outbreak of Cyclospora, a microscopic parasite that causes the intestinal illness cyclosporiasis.

While the source of the outbreak is not yet clear, cases have been rising in northwest Ohio and southeast Michigan. The Michigan Department of Health and Human Services (MDHHS) reported on July 1 that 170 people across seven counties in Michigan had been infected as of June 30.

"Outbreaks of cyclosporiasis have been occurring across the United States and now here in Michigan. Based on the unusual number of cases we have identified in a little over a week, we anticipate additional cases of illness being reported," said Dr. Natasha Bagdasarian, the state's chief medical executive.

Earlier, the US Centers for Disease Control and Prevention (CDC) reported that 145 people, aged 5 to 86, contracted the parasite between May 1 and June 16. Twenty people were hospitalized, with infections reported across 17 states. New York recorded the highest number of cases.

New York has reported the highest number of cases, with between 31 and 80 infections, according to The Independent. Illinois and Texas have each reported between 11 and 30 cases.

Other affected states include: Alaska, Colorado, Connecticut, Florida, Georgia, Louisiana, Massachusetts, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, Wisconsin. Each of these states has reported between one and 10 cases.

Also read: Scientific Breakthrough: US Scientists Create First Synthetic Cell That Eats and Reproduces

What Foods Should You Avoid?

According to the CDC, cyclosporiasis outbreaks in the US have frequently been linked to imported fresh produce and to travelers returning from Cyclospora-endemic regions. However, investigators believe the current outbreak is associated with contaminated food consumed within the United States, as most patients had not traveled internationally before becoming ill.

Health officials have not advised people to avoid all fresh produce, as investigators have not yet identified the exact source of the outbreak. However, previous US outbreaks have been linked to imported fresh produce such as:

  • Basil
  • Cilantro
  • Mesclun lettuce
  • Raspberries
  • Snow peas

So far, no outbreaks have been linked to commercially frozen or canned produce.

The parasite spreads through food or water contaminated with human feces and is not spread directly from person to person.

Read More: US Medicare Set To Cover GLP-1 Drugs For Weight Loss: All You Should Know About Eligibility, Costs

How To Prevent Cyclospora Infection

The CDC recommends following safe food handling practices to reduce the risk of infection:

  • Wash your hands with soap and water before and after handling fresh fruits and vegetables.
  • Wash all fruits and vegetables thoroughly under running water before eating, cutting, or cooking.
  • Produce labeled "prewashed" does not need to be washed again.
  • Scrub firm produce, such as melons and cucumbers, with a clean produce brush.
  • Cut away any bruised or damaged areas before eating.
  • Refrigerate cut, peeled, or cooked fruits and vegetables within two hours.

It also advises people traveling to tropical and subtropical regions, where Cyclospora is more common, should also be cautious. Routine chemical disinfectants used on food or water do not reliably kill the parasite.

What Is Cyclospora cayetanensis?

Cyclospora cayetanensis is a microscopic parasite that causes cyclosporiasis, a foodborne intestinal illness. People become infected by consuming contaminated food or water.

The infection commonly causes watery diarrhea and other digestive symptoms. While many cases are mild, the illness can last weeks or even months if left untreated. Doctors typically treat the infection with antibiotics.

People with weakened immune systems, including those with HIV/AIDS, cancer, or other conditions affecting immunity, are at greater risk of developing severe illness.

Symptoms of Cyclospora Infection

Symptoms usually begin about one week after consuming contaminated food or water and may include:

  • Watery or explosive diarrhea
  • Loss of appetite
  • Bloating and gas
  • Fatigue
  • Low-grade fever
  • Nausea
  • Stomach cramps
  • Vomiting.

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Eggs Vs Soybean: Which Is More Nutritious As Kolkata’s Midday Meal Scheme Goes Fully Vegetarian

Updated Jul 2, 2026 | 12:37 PM IST

SummaryAmid Kolkata's midday meal row, we find that even though soybean is a decent source of protein, it cannot dethrone eggs for valid reasons.

Credit: AI-generated image

The West Bengal government’s recent move to substitute eggs with soybean, paneer, and other vegetarian sources in Kolkata’s midday meal scheme has been met with mixed responses. Amid concern for protein deficiency in children, we took a deeper look into the eggs vs soybean debate.

Eggs Vs Soya: Which Is Better?

After the International Society for Krishna Consciousness (ISKCON) took over midday meal duties in Kolkata, it switched to an all-vegetarian diet that entailed removing eggs. The move sparked a debate about the efficacy of vegetarian sources of protein, especially plant-based ones like soybean.

Experts believe that it's not a matter of one food vs the other but understanding the distinct nutritional benefits of each.

HealthandMe spoke to Dr. Aaryin Memon, Clinical Nutritionist, Bhailal General Amin Hospital, Vadodara, about the impact of relying on soybean for protein instead of eggs.

Dr Memon says that protein is one of the key nutrients during childhood and plays a role in the growth, development of muscles, immunity, and brain function. She says that eggs and soybeans are both good sources of protein, but they have different nutritional profiles and impact on the body.

As we have always been told that eggs are the gold standard when it comes to protein for the following reasons:

  • Eggs contain all nine essential amino acids in highly available forms.

  • Eggs are packed with vitamin B12 and vitamin D.

  • Eggs also contain choline, selenium, and healthy fats.

Read more: Frequent Headaches: When To See A Doctor And Warning Signs To Watch For

Additionally, eggs are important for growing children as they contribute significantly in all-round development.

The expert says, “They contain a great amount of choline, which is essential for brain development, memory, and learning.”

When it comes to vegetarian sources of protein that match the nutritional value of eggs, soybeans are one of the top on the list. It is an excellent source of protein, dietary fibre, iron, calcium, magnesium, and beneficial plant compounds including isoflavones.

Soya can also help satisfy children's nutritional requirements and is a recommended vegetarian source of protein, according to nutritionists. It is also inexpensive, readily available, and appropriate for egg-free children's diets due to dietary, religious, or cultural preferences.

But the nutritionist points out that there are differences in their nutritional profiles.

Dr Memon says, “Soybean is a good source of protein, but plant protein is less bioavailable than animal protein. Certain nutrients like vitamin B12 are not found in plant-based protein sources. Additionally, the iron found in soya does not get absorbed in the body as well as iron from animals.”

Soybeans’ comparatively weaker nutritional profile is the reason why vegetarians have to rely on a diverse range of high protein foods like pulses, dairy products, legumes, nuts and seeds, as well as foods rich in vitamin C to support iron absorption, like fruit and vegetables.

This brings us to the conclusion that school meal programmes should embrace an 'either-or' option and include eggs and well-planned vegetarian options where possible. This enables children to have the right kind of nutrition and takes into account differences in their diets.

End of Article

US Gastroenterologist Shares 5 Hidden Causes Of Chronic Heartburn And Bloating

Updated Jun 24, 2026 | 11:53 AM IST

SummaryDr Saurabh Sethi, a Harvard-trained gastroenterologist, debunked the myth that spicy foods cause heartburn and bloating. He revealed five recurring habits that lead to acid reflux.
US Gastroenterologist Shares 5 Hidden Causes Of Chronic Heartburn And Bloating

Credit: iStock

Heartburn and bloating are common indicators of indigestion. According to the US National Institute of Health, more than one billion people worldwide suffer from heartburn and related acid reflux, while nearly 18 per cent of the global population suffers from chronic bloating weekly.

Spicy foods are commonly blamed for heartburn and bloating; however, Dr Saurabh Sethi, a Harvard-trained gastroenterologist, has debunked this myth by claiming five recurring habits that he has seen common amongst such patients in his vast years of experience.

Addressing these underlying issues may help improve symptoms before turning to additional medications, he said, in an Instagram Post.

  • Not enough fiber in the diet

Topping the list is a problem that affects a large portion of adults: inadequate fiber intake.

Fiber plays a critical role in maintaining a healthy gut microbiome and supporting regular digestion.

”A fiber-depleted gut feeds the wrong microbes, leading to excess gas and bloating,” Dr. Sethi said. The daily fiber intake target for an adult should be between 25 and 38 grams, which most adults fail to meet.

  • Chronic stress

The connection between mental health and digestive health is stronger than many people realize.

The gastroenterologist stated that the gut-brain axis, the communication network linking the digestive system and the brain, is real, and stress can alter gut motility, increase symptom perception, and worsen both bloating and reflux.

  • Wrong use of Peppermint

Peppermint tea is a naturally caffeine-free herbal infusion made from leaves of the peppermint plant, widely enjoyed to soothe digestion and reduce bloating.

However, it can cause the opposite of treating bloating by relaxing the lower esophageal sphincter and worsen heartburn.

“You may be treating one symptom while triggering another,” said the specialist, who has performed over 1000 endoscopies.

Read More: FSSAI Tightens Food Safety Norms, Mandates Food-Grade Knives, Cutting Tools

  • Lying down after the meals

Another common habit among patients with chronic heartburn is lying down shortly after meals.

The doctor explained that gravity is the best antacid, and lying down within 2 to 3 hours of eating can cause heavy acid reflux. Dr. Sethi claims that he sees this pattern in chronic heartburn patients every week.

  • Eating too fast

Many people rush through meals without realizing the impact it can have on digestion. One of the biggest contributors to bloating is swallowed air, which increases significantly when people eat too quickly.

"Your stomach isn't a trash compactor," said the gastroenterologist. He also talked about how fast eaters swallow significantly more air than slow eaters.

Dr Sethi said that for people struggling with chronic heartburn and bloating, the solution may not always involve eliminating spicy foods or adding another medication.

End of Article