Once again the answer is yes, according to Krogh. “The taste may be a bit flat but it isn't harmful,” he says. Even without being capped, water is potable for weeks or months as long as it hasn't been polluted by dirty fingers or spit which is full of bacteria.
If you do not clean your reusable water bottle on a daily basis, then it could harbor harmful bacteria that could make you sick. Unwashed bottles can accumulate bacteria and can be dirtier than dog bowls and kitchen sinks, for example.
“Ideally, it is a good idea to clean your water bottle at the end of each day,” says Eric Hansen, the Director at Nalgene Outdoors. The ever-popular S'well Bottles also recommend daily cleaning, too. The same applies for glass bottles like bkr. “You'll want to use soap and hot water to get rid of germs,” Forté says.
“The hotter it gets, the more the stuff in plastic can move into food or drinking water.” Drinking from a single water bottle left in the hot sun won't hurt you, but experts say consumers should avoid persistant exposure to plastic containers left in extreme heat.
Plan ahead. Have bottled water stored in a designated area, and make sure it meets general water storage requirements—at room temperature and not in direct sunlight. If you are storing bottled water for emergency purposes, it is recommended to keep spring water stored for no more than one year!
"Plastic water bottles can start to break down after continued use and need to be replaced about once a year," Leanne Stapf, chief operating officer at The Cleaning Authority, told POPSUGAR. "Glass bottles have a long shelf life, but can break easily, so they aren't ideal for those with an active lifestyle.
"if you're leaving a bottle of water in a car for a day, there's really no risk of any chemicals leaching into the water," Williams said. "If you left it in a car for weeks at a time, then there's a small chance that some chemicals like BPA could leach into the water, but it's a very small probability," Williams said.
Tips for storing safe water in a container after cleaning and sanitizing:
- Label container as “drinking water” and include storage date.
- Replace stored water every six months.
- Keep stored water in a place with a fairly constant cool temperature (50–70°F).
- Do not store water containers in direct sunlight.
If properly stored, water doesn't spoil. What makes water go bad is contamination that gets into it. If you take proper precautions in sealing and storing your water so that bacteria or other contaminants don't get into it, your water could theoretically stay good forever.
When it comes to the shelf life of
an open bottle, 2 to 3 days is recommended for the best quality.
How Long Does Water Last.
| Pantry | Fridge |
|---|
| Water (unopened) | 5 years + | |
| Water (opened) | | 3 – 5 days |
| Sparkling, vitamin or flavored water (unopened) | Best-by + 3 months | |
| Sparkling, vitamin or flavored water (opened) | | 2 – 3 days |
Besides that, the expiration date on bottled water has certain benefits for the manufacturer. Although water, in and of itself, does not go bad, the plastic bottle it is contained in does "expire," and will eventually start leaching chemicals into the water.
On shaking the bottle vigorously and long enough (not just uniform reciprocating motion), the air and / or the water vapour in the bottle will get mixed with water and small bubbles will get distributed throughout the body of the water, like effervescing soda, which will slightly raise the level of the blend of water
If you buy purchased water, in sealed 5 gallon jugs (like the ones for water coolers), they should be fine for several years before you would need to use bleach. Remember though, to keep them out of light.
“Most experts will tell you tap water has a shelf-life of six months,” Satterfield says.
If you choose to fill your bottles with tap water, they will stay good for approximately 6 months, assuming that the containers are clean and purified themselves. It is your responsibility to make sure the bottles or jugs have never been used with dangerous chemicals and are not contaminated.
Why is bottled water bad for you? Bottled water is laced with harmful chemicals such as phthalates which have been linked to an increased risk of cancer. Additionally, plastic bottles contain BPA which has been linked to various reproductive issues.
The truth. Drinking water from plastic water bottles that freeze or overheat does not increase your risk of cancer. Some people are concerned about dioxins, a group of highly toxic substances that are known to cause cancer, leaching from the bottles into the water.
Definitely not. Drinking bottled water which is left in a parked car is not recommended by health experts. This is because of biphenyl A levels in plastic water bottles. When a car is parked under the sun, it can increase internal temperature to 78 degree Celsius and could adversely impact our health.
Although it's true that the water in some cities contains trace amounts of pollutants, most healthy adults can still safely drink from the tap in most areas—and, in fact, tap water remains the most cost-effective, convenient way to stay hydrated.
Tap water that has been left to sit out slowly begins to acquire an off taste. Many assume that this is because of microorganisms. After about 12 hours tap water starts to go flat as carbon dioxide in the air starts to mix with the water in the glass, lowering its pH and giving it an off taste.
According to the study, as the temperature increases, so too do concentrations of two harmful substances inside bottled water. The first substance, antimony — a trace metal used in the creation of the plastic water bottle — has been linked to gastrointestinal, heart and lung disease and some cancers in high doses.
