Bottled water is drinking water (e.g., well water, distilled water, mineral water, or spring water) packaged in plastic or glass water bottles. Bottled water may be carbonated or not. Sizes range from small single serving bottles to large carboys for water coolers.
Although vessels to bottle and transport water were part of the earliest human civilizations, bottling water began in the United Kingdom with the first water bottling at the Holy Well in 1621. The demand for bottled water was fueled in large part by the resurgence in spa-going and water therapy among Europeans and American colonists in the 17th and 18th centuries. The first commercially distributed water in America was bottled and sold by Jackson's Spa in Boston in 1767. Early drinkers of bottled spa waters believed that the water at these mineral springs had therapeutic properties and that bathing in or drinking the water could help treat many common ailments.
The popularity of bottled mineral waters quickly led to a market for imitation products. Carbonated waters developed to reproduce the natural effervescence of spring-bottled water, and in 1809 Joseph Hawkins was issued the first U.S. patent for "imitation" mineral water. Technological innovation in the 19th century led to cheaper glass and quicker bottling. So bottled water could be produced on a larger scale and grew in popularity. Many saw bottled water as safer than municipal water supplies, which could spread diseases such as cholera and typhoid. By around 1850, one of America's most popular bottlers, Saratoga Springs, was producing more than 7 million bottles of water annually.
In the United States, the popularity of bottled water declined in the early 20th century, when the advent of water chlorination reduced public concerns about water-borne diseases in municipal water supplies. But it remained popular in Europe, where it spread to cafés and grocery stores in the second half of the century. Perrier water had been bottled since the 19th century and widely sold throughout the British Empire; in 1977 Perrier launched in the United States. Today, bottled water is the second most popular commercial beverage in the United States, with about half the domestic consumption of other soft drinks.
Many of the early developments in the field of chemistry can be attributed to the study of natural mineral waters and attempts to replicate them for commercial sale. Joseph Priestley, who discovered oxygen in 1775, made his first contributions to the field of chemistry by dissolving carbon dioxide in water, for which he was awarded the Copley Medal in 1773. He later worked with Johann Jacob Schweppe, founder of Schweppes, in developing "aerated" waters for commercial sale.
PET plastic bottles
In 1973, DuPont engineer Nathaniel Wyeth patented Polyethylene terephthalate (PET) bottles, the first plastic bottle to withstand the pressure of carbonated liquids. Today, PET plastic has replaced glass as the preferred material for single-serving bottled water containers due to its light weight and resistance to breaking.
- Artesian water – this is water that originates from a confined aquifer that has been tapped and in which the water level stands at some height above the top of the aquifer.
- Fluoridated – this type of water contains added fluoride. This category includes water classified as "For Infants" or "Nursery."
- Groundwater – this type of water is from an underground source that is under a pressure equal to or greater than atmospheric pressure.
- Mineral water – water from a mineral spring that contains various minerals, such as salts and sulfur compounds. It comes from a source tapped at one or more bore holes or spring, and originates from a geologically and physically protected underground water source. No minerals may be added to this water.
- Purified water – this type of water has been produced by distillation, deionization, reverse osmosis, or other suitable processes. Purified water may also be referred to as "demineralized water".
- Sparkling water – Sparkling water contains the same amount of carbon dioxide that it had at emergence from the source. The carbon dioxide may be removed and replenished after treatment.
- Spring water – this type of water comes from an underground formation from which water flows naturally to the Earth's surface.
- Sterile water – this type of water meets sterilization requirements, for example, those specified under "sterility tests" in the United States Pharmacopoeia.
- Well water – well water is taken from a hole tapping, etc. This hole may be bored, drilled, or otherwise constructed in the ground.
The Beverage Marketing Corporation defines the bottled water market segment as "retail PET, retail bulk, home and office delivery, vending, domestic sparkling and imports", but excluding "flavored and enhanced water."
Purified water vending machines
A number of cities and companies worldwide have vending machines that dispense purified water into customer's own containers. All dispensers filter the location's tap water. In North America, these machines are typically located outside of supermarkets.
Bottled water service
It is not uncommon for business or individuals to subscribe to a bottled water service. These services deliver water either monthly or weekly, sometimes even daily. Traditionally, water in glass bottles (jugs) was provided to electric coolers in areas of businesses without plumbing. Plastic containers have replaced those glass jugs, however, dispensers at businesses now may stand alongside existing water taps or fountains.
Bottled water is often stored as part of an emergency kit in case of natural disaster. The U.S. Federal Emergency Management Agency (FEMA) says the "safest" and "most reliable" source of drinking water is store-bought bottled water. Commonly, disaster management experts recommend storing 1-US-gallon (3.8 L) of water per person, per day for at least three days. This amount is intended to include water for drinking and cooking as well as water for hand washing, washing dishes, and personal hygiene. Factory containers of water have an indefinite shelf life, as long as they remain unopened and undamaged. The sell-by date is voluntarily and individually set by manufacturers to indicate the length of time that they believe the water will taste and smell fresh, rather than to indicate any issue of contamination or food safety.
The most common packaging material for single-serve, non-carbonated bottled water in the United States and Europe is Polyethylene terephthalate (PET) plastic. Marked in many countries with resin identification code number “1,” PET is 100% recyclable, though recycling rates vary by region. In 2014, approximately 1.8 billion pounds of post-consumer PET bottles were collected in the United States and 1.75 million metric tons (approximately 3.9 billion pounds) were collected in the European Union, making it the most recycled plastic in both the United States and Europe. In the United States, the recycling rate for PET packaging was 31.8% in 2014; in the European Union, the recycling rate for PET packaging for the same period was approximately 52%.
The National Association for PET Container Resources (NAPCOR), the trade association for the PET plastic packaging industry in the United States and Canada, identifies five major, generic end-use categories for recycled PET plastic: 1) packaging applications, including new bottles; 2) sheet and film applications, including some thermoforming applications; 3) strapping; 4) engineered resins applications; and 5) fiber applications. According to the nonprofit Recycling Across America, five individual serving PET plastic bottles provide enough fiber to make one square foot of carpet or to fill one ski jacket.
In Europe, more than one-third of recovered PET plastic is used to produce polyester fibers, and another quarter is used in the production of preformed plastic containers—such as egg cartons, fruit boxes, and other plastic beverage bottles.
Water and Energy Usage
On average, it takes 1.32 litres (L) of water to produce 1 L of bottled water. This includes 1 L of ingredient water and 0.32 L of water used in facility processes such as treatment, bottling, and maintenance. Small pack facilities (facilities that package water in containers between 8 oz. and 2.5 gallons) use the least amount of water (1.26 L per 1 L), followed by mixed packaging facilities (1.46 L per 1 L). Facilities that package water for home and office delivery in sizes of 2.5 gallons to 5 gallons use the most water (1.56 L per 1 L).
Bottled water has lower water usage than bottled soft drinks, which average 2.02 L per 1 L, as well as beer (4 L per 1 L) and wine (4.74 L per 1 L). The larger per-litre water consumption of these drinks can be attributed to additional ingredients and production processes, such as flavor mixing and carbonization for soft drinks and fermentation for beer and wine. In the United States, bottled water production represents 0.011% of annual water consumption.
Critics of bottled water argue that the industry should take in to account not just water used in its production and packaging process, but the total water footprint of its supply chain, which includes water used in the production of its packaging.
A 2011 IBWA lifecycle inventory study found that the production, packaging, and transportation of bottled water within the United States consumes 107.4 trillion BTUs of energy annually, which represents about .07% of yearly energy consumption in the country. According to the same study, 6.8 million tons of CO2 eq are emitted by the bottled water industry a year in the United States, about .08% of annual emissions. An Aetna Group study in 2015 concluded that each litre of bottled water requires 0.24 megajoules of energy to produce. The lifecycle carbon footprint for a half litre of small pack bottled water is 111 grams CO2 eq. By comparison, the same sized PET plastic-bottled soft drink produces 240 grams CO2 eq. Soft drink bottles require much thicker plastic due to carbonation, and therefore many more grams of CO2 eq.
Bureau of Indian Standards
The Bureau of Indian Standards (BIS) is the national Standards Body of India working under the aegis of Ministry of Consumer Affairs, Food & Public Distribution, Government of India. It is established by the Bureau of Indian Standards Act, 1986 which came into effect on 23 December 1986. The Minister in charge of the Ministry or Department having administrative control of the BIS is the ex-officio President of the BIS.
Food and Drug Administration
Bottled water is comprehensively regulated by the U.S. Food and Drug Administration (FDA) as a packaged food product. By law, the FDA regulations for bottled water must be at least as stringent as the Environmental Protection Agency standards for tap water.
The FDA has established "Standards of Identity" for bottled water products sold in the U.S. For a product to be considered “bottled water”, it cannot contain sweeteners or chemical additives (other than flavors, extracts or essences) and must be calorie-free and sugar-free. If flavors, extracts and essences—derived from spice or fruit—are added to the water, these additions must comprise less than 1% by weight of the final product. The FDA Code of Federal Regulations establishes limitations for the amount of fluoride that can be added to water. Mineral water contains at least 250 parts per million total dissolved solids (TDS). "Purified water" is defined in the United States Pharmacopoeia.
Food Standards Australia New Zealand
Food Standards Australia New Zealand's Food Standards Code limits fluoride in bottled water to between 0.6 and 1.0 milligrams per litre, and requires any addition to be specified on the product label.
The Council of Canadians, a social action organization, stressed the need for bottled water industry reform after launching a boycott of Nestlé in September 2016 after the company outbid a small town aiming to secure a long-term water supply through a local well as the country battles drought and depletion of ground water reserves. Premier Kathleen Wynne stated that her government will look for ways to put community needs ahead of bottled water corporations, saying "as we look at the water bottling industry, that has to be a question because we're talking about what we could argue is our most precious resource" that they have this "discussion about our water, the status of and the treatment of water bottling companies, that needs to be taken into consideration".
Global bottled water consumption crossed the 3 billion hectoliter threshold in 2014. In 2017, the global rate of consumption rose by an estimated 7.6 percent. Per capita consumption was 50.1 liters, up by 3 liters from 2016's 47.1 liters.
The Australasian Bottled Water Institute is a regional member of the International Council of Bottled Water Associations. The bottled water industry in Australia is worth approximately $400 million per year,
An upmarket restaurant in Sydney has stopped selling bottled water and started using a machine costing A$5000 to filter, chill and carbonate tap water to get the same quality water.
Broadly speaking, "mineral water" is groundwater that has emerged from the ground and flowed over rock. Treatment of mineral water is restricted to removal of unstable elements such as iron and sulfur compounds. Treatment for such minerals may extend only to filtration or decanting with oxygenation. Free carbon dioxide may be removed only by physical methods, and the regulations for introduction (or reintroduction) of CO2 are strictly defined. Disinfection of natural mineral water is completely prohibited, including the addition of any element that is likely to change bacterial colony counts. If natural mineral water is effervescent, it must be labelled accordingly, depending on the origin of the carbon dioxide: naturally carbonated natural mineral water (no introduction of CO2); natural mineral water fortified with gas from the spring (reintroduction of CO2); carbonated natural mineral water (CO2 added following strict guidelines).
The bottled water industry in India witnessed a boom in the late 1990s soon after Bisleri launched its packaged drinking water in the country. This significant growth was fuelled by a surge in advertising by the industry players that "bottled water was pure and healthy".
The total market was valued at ₹60 billion (US$870 million) in 2013, of which the top five players (Bisleri, PepsiCo, Coca-Cola and Parle) accounted for 67% of the market share. This market is expected to grow at a CAGR of 22%, to reach ₹160 billion (US$2.3 billion) in 2018.
In 2016, Sikkim announced restrictions on the usage of plastic water bottles (in government functions and meetings) and styrofoam products as it is associated with adverse health and environment impacts.
Available Sizes : 20 L (jar), 5 L (bottle), 1 L (bottles - pack of 12), 500 mL (bottles - pack of 24), 250 mL (bottles - pack of 48 or 36), 200 mL (bottles - pack of 48 or 36).
Lebanon has one of the fastest growth rate of per capita consumption of bottled water. Lebanon has seven major brands of bottled mineral water for local consumption and for exportation to the water-starved countries on the Arabian Peninsula and in the Persian Gulf.
Bottled water in New Zealand is regulated by Food Standards Australia New Zealand and must comply with the Food Act 1981. From July 2009 fluoride was allowed to be present in bottled water as an additive or as a natural occurring mineral.
Due to contaminated water being widespread, in the mid-1980s urban families started installing filtration units at home. This later developed into companies providing mineral water delivery services at home. Use of these 1-US-gallon (3.8 L) bottles that could be attached to a dispenser is still widespread.
Bottled water was made famous by one of the largest marketing campaigns in Pakistan history undertaken by Nestle. Eventually, other bottlers including dozens of local ones, Coca-Cola, Pepsi, Mineral Drops by water icon, Nature, Vey, Nova Pure Water Larkana, Mina Water, Great Water Islamabad, Dew Drop, and other imported brands such as Evian began marketing in the country.
The U.S. is the second largest consumer market for bottled water in the world, followed by Mexico, Indonesia, and Brazil. China surpassed the United States to take the lead in 2013. In 2016, bottled water outsold carbonated soft drinks (by volume) to become the number one packaged beverage in the U.S. In 2018, bottled water consumption increased to 14 billion gallons, up 5.8 percent from 2017, with the average American drinking 41.9 gallons of bottled water annually.
In the United States, bottled water and tap water are regulated by different federal agencies: the Food and Drug Administration (FDA) regulates bottled water and the Environmental Protection Agency (EPA) regulates the quality of tap water. The International Bottled Water Association (IBWA) is headquartered in Alexandria, VA.
In the United States, the Food and Drug Administration (FDA) regulates all packaged foods and beverage products, including bottled water, and mandates labeling requirements. FDA labeling requirements include a statement of the type of water in the container, compliance with the applicable definitions in the FDA Standards of Identity, ingredient labeling, name and place of business of the manufacturer, packer or distributor, net weight, and, if required, nutrition labeling.
Public water systems are required by the U.S. Environmental Protection Agency (EPA) to provide households in their service territories with a Consumer Confidence Report (CCR) that provides information on the quality of their water during the previous year. Such disclosures are not required by the FDA of any packaged food or beverage product, including bottled water. All packaged foods and beverages, must be manufactured according to FDA regulations and must meet all applicable quality and safety standards.
In Canada, bottled water must meet the standards in the Food and Drugs Act & Regulations (FDAR) as it is considered a food. The FDAR works in partnership with Health Canada and Canadian in developing the policies regarding bottled water. The CFIA focuses more on regulations pertaining to packaging, labeling, advertising, and other safety practices, whereas the FDAR focuses more on the water itself. For example, the bottled water must meet the Food Inspection Agency (CFIA) Regulations in Division 12, Part B of the Act must be met before it is approved for sale. Some of the regulations include: labeling terms, safety standards (i.e.: what is/isn't acceptable), and microbiological standards (i.e.: chlorine). In addition to this, the type of filtration method the water has gone through must be shown on the label, as stated in Section B.12.009 Additional information regarding regulations can be found on the CFIA website. The regulations specific to bottled water is in Division 12 and 15, which specify what can be added, such as the amount of arsenic and lead. Regulations are always being updated to conform with new scientific data, laws, new products, and new improvements. In terms of the types of water sold, spring and mineral water must meet the following criteria:
- originate from an underground source which is not part of a community water supply; and
- be naturally fit to drink (potable) at the source; and
- before bottling, not be treated in any way that changes the original chemical composition of the water. (The allowable treatments are discussed in section 1.2.)
In Canada, there are two categories of bottled water: 1) spring/mineral water, or 2) water other than mineral water or spring water.
Emergency preparedness refers to the steps taken prior to a natural disaster or emergency to ensure safety throughout the event. The American Red Cross and Federal Emergency Management Agency (FEMA) recommend that individuals and families maintain disaster supply kits in the event that an emergency disrupts food supply or public water systems, blocks roads, or leaves people unable to find essentials. Following disasters such as floods, blizzards, or earthquakes, water sources can be cut off or contaminated, limiting access to safe, clean drinking water. For this reason, FEMA recommends that all disaster supply kits include one gallon of water per person per day for at least three days for drinking and sanitation. In hot climates, FEMA recommends doubling this quantity.
For the water supply, FEMA recommends commercially bottled water kept in a cool, dark place. As an alternative, FEMA recommends using disinfected food-grade water containers to store tap water and replacing the water every six months.
Bottled water in emergency response
Following Hurricane Sandy, FEMA requested 5.4 million bottles of water from Nestle North America to aid in disaster relief efforts. Nestle donated 3 million bottles of water to Haiti following the 2010 earthquake. In the wake of Hurricane Katrina in 2005, FEMA requested 100 tractor trailers’ worth of bottled water (approximately 200,000 cases) from the American Beverage Association.
AmeriCares, an international disaster relief non-profit, donated 109,000 bottles of water to residents in and around Moore, Oklahoma following the May 2013 tornadoes. Members of the International Bottled Water Association donated more than 400,000 additional bottles of water to the victims of the tornadoes.
In August 2014, city officials in Toledo, Ohio banned local tap water after toxins from an algae bloom in Lake Erie were found in the city's water supply. The American Red Cross and AmeriCares responded by helping coordinate the distribution of bottled water to the 500,000 area residents impacted by the ban.
Bottled water debates
Bottled water is bought for many different reasons including taste, convenience, poor tap water quality and safety concerns, health concerns and as a substitute for sugary drinks. The environmental impact, container safety, water origin, emergency supplies and role of the bottled water industry continue to be areas of concern for many people.
Most bottled water containers are made from recyclable PET plastic, and some of these bottles end up in the waste stream in landfills. The financial and environmental costs of transportation of bottled water has been another concern because of the energy used and the consequent release of carbon dioxide and the potential impact on climate change.
In some cases it can be shown that bottled water is actually tap water. However, it is also argued that the quality specifications for some bottled waters in some jurisdictions are more stringent than the standards for tap-water. In the US, bottled water that comes from municipal suppliers must be clearly labeled as such unless it has been sufficiently processed to be labeled as “distilled” or “purified”.
It has been argued that bottled water companies should only exist for emergency situations when public water supplies are unsafe, unavailable or overwhelmed. The contrary view is that if regulations are placed on the availability of bottled water, bottled water companies will not have the sufficient supplies when a water system is compromised, and that the only reason bottled water is readily available during emergencies is because the industry is maintained by routine purchases.
One American study showed that "even in areas with safe tap water, African American, Polish American and Latino parents were three times more likely to give their children mostly bottled water compared to non-Latino white children, because of their belief that bottled water is safer, cleaner, better tasting, or more convenient." The economic implications of this also showed serious inequities: as a percentage of household income, whites reported median spending of 0.4% of their income on bottled water; African Americans and Latinos reported median spending to be more than twice as high.” The study volunteers, "For poor families, the use of bottled water may lead to less availability of resources for other health needs.......by the rather striking levels of expenditure on water relative to household income." On a global scale, markets for bottled water in poorer developing countries are growing rapidly due to increased fears of “contaminated tap water, inadequate municipal water systems, and increased marketing on the part of bottled water companies.” Sales of bottled water in Mexico, China, and parts of India are rising steeply.
Perceptions about bottled water
Bottled water is perceived by many as being a safer alternative to other sources of water such as tap water. Bottled water usage has increased even in countries where clean tap water is present. This may be attributed to consumers disliking the taste of tap water or its organoleptics. Another contributing factor to this shift could be the marketing success of bottled water. The success of bottled water marketing can be seen by Perrier's transformation of a bottle of water into a status symbol. However, while bottled water has grown in both consumption and sales, the industry's advertising expenses are considerably less than other beverages. According to the Beverage Marketing Corporation (BMC), in 2013, the bottled water industry spent $60.6 million on advertising. That same year, sports drinks spent $128 million, sodas spent $564 million, and beer spent $1 billion.
Consumers tend to choose bottled water due to health related reasons. In communities that experience problems with their tap water, bottled water consumption is significantly higher. The International Bottled Water Association guidelines state that bottled water companies cannot compare their product to tap water in marketing operations. Consumers are also affected by memories associated with particular brands. For example, Coca-Cola took their Dasani product off the UK market after finding levels of bromate that were higher than legal standards because consumers in the UK associated this flaw with the Dasani product.
"Bottled water sales are higher amongst African-American, Asians and Hispanic groups, which typically have lower incomes than whites." Some hypothesize that these differences are due to the geographic distribution of ethnic groups. It was theorized that ethnic differences in bottled water usage "mirror the variability of water system quality between urban, suburban and rural areas (Abrahams et al. 2000) and it was also pointed out that they might reflect the memory of past problems caused by deficient tap-water systems in deprived areas (Olson 1999)." In France, a similar geographic study in the early 1970s found that bottled water consumption was found to be much higher in urban areas (Ferrier 2001). This finding was "also explained in terms of the poor quality of urban tap water and of the bad condition of the old lead pipes in French cities. Nonetheless, while poor tap water quality may motivate the public to search for alternative sources, it alone does not necessarily lead to higher consumption of bottled water."
Some surveys "found that bottled water, far from being an alternative to tap water, seems to be mostly consumed as a substitute for alcoholic and traditional soft drinks (e.g. AWWA-RF 1993; FWR 1996) – the exception being when water contamination presents serious health risks and the trust in the tap water company is highly eroded (e.g. Lonnon 2004)." Another explanation for the rise in popularity of bottled water is alternative explanation is that "the consumption of 'pure' and 'natural' bottled water in degraded environments may represent a symbolic purging behavior."
Many low-income families avoid drinking tap water because they fear it may cause sickness. Bottled, filtered, and tap water are all for the most part safe in the United States. The Environmental Protection Agency regulations for tap water are "actually stricter than the Food and Drug Administration regulations for bottled water." A study of drinking water in Cincinnati, Ohio, discovered that bacterial counts in bottled water were often higher than those in tap water and fluoride concentration was inconsistent.
Globally, there is an intensifying environmental backlash against bottled water usage. As global consumption of bottled water soars, environmental groups such as the World Wide Fund for Nature (WWF) and Greenpeace have warned of the huge environmental footprint of the plastic in which the water is packaged.
In 2001, a WWF study, "Bottled water: understanding a social phenomenon", warned that in many countries, bottled water may be no safer or healthier than tap water and it sold for up to 1,000 times the price. It said the booming market would put severe pressure on recycling plastics and could lead to landfill sites drowning in mountains of plastic bottles. Also, the study discovered that the production of bottled water uses more water than the consumer actually buys in the bottle itself.
Bottled water is more expensive than municipally-supplied tap water. Tap water sources and delivery systems (taps and faucets) are fixed in place while bottled water is available at many differing price points and in a variety of size formats.
"The consumption of bottled and filtered water has dramatically increased in the United States during the past decade, with bottled water sales tripling to about $4 billion a year. More than 50% of the US population drinks bottled water and 'people spend from 240 to over 10,000 times more per gallon for bottled water than they typically do for tap water.' An annual supply of bottled water for a person who consumes 8 glasses a day would cost approximately $200; the same amount of tap water would cost approximately $0.33. In general, women are more likely to drink bottled water than men, and Hispanic women are the group most likely to drink bottled water."
The Beverage Marketing Corporation (BMC) states that in 2013, the average wholesale price per gallon of domestic non-sparkling bottled water was $1.21. BMC's research also shows that consumers actually tend to buy bottled water in bulk from supermarkets (25.3%) or large discount retailers (57.9%) because it costs significantly less. Convenience stores are likely to have higher prices (4.5%), as do drug stores (2.8%). The remaining 9.5% is accounted for through vending machines, cafeterias and other food service outlets, and other types of sales.
In response to environmental and financial concerns, a few localities and U.S. colleges are banning bottled water sales.
In 2009, the small New South Wales town of Bundanoon voted to become the first town in the world to ban the selling or dispensing of bottled water. Bundanoon caught the attention of many other cities around the world.
After a Sydney-based beverage company wanted to open a water extraction plant in the New South Wales town Bundanoon, residents outlawed the sale of bottled water. The town continues to fight the company's proposal in court. "In the same week the New South Wales state premier also banned all state departments and agencies from buying bottled water because of its huge environmental footprint, joining more than 70 cities in the United States, Canada and the United Kingdom that have banned bottled water in their departments."
In 2012, the town of Concord, Massachusetts became the first in the United States to ban the sale of bottled water. Specifically, sales of non-sparkling, unflavored drinking water in single-serving Polyethelyne terephthalate (PET) bottles of 1 litre (34 ounces) or less are prohibited. The ban went into effect on 1 January 2013.
In the United States, bottled water and tap water are regulated by different federal agencies: the Food and Drug Administration (FDA) regulates bottled water and the Environmental Protection Agency (EPA) regulates the quality of tap water. Under the Safe Drinking Water Act the EPA has set maximum contaminant levels for approximately 90 contaminants that might be found in drinking water and 15 secondary maximum contaminant levels.
In some areas, tap water may contain added fluoride, which helps prevent tooth decay and cavities. Some bottled water manufacturers in the United States add fluoride to their product, or provide a fluoridated bottled water product. The Food and Drug Administration of the United States does not require bottled water manufacturers to list the fluoride content on the label. However, unlike tap water where the amount of fluoride added by municipalities to drinking water is not federally regulated, the FDA has set specific limits for how much fluoride may be found in bottled water. Water fluoridation remains controversial in countries that require it (the United States, United Kingdom, Ireland, Canada, Australia, and a handful of other countries). Several studies have examined the content of fluoride and other chemicals in bottled water as well as the accuracy of these values as printed on the labels showing some significant difference between labeled and measured value.
According to a 1999 NRDC study, in which roughly 22 percent of brands were tested, at least one sample of bottled drinking water contained chemical contaminants at levels above strict state health limits. Some of the contaminants found in the study could pose health risks if consumed over a long period of time. The NRDC report conceded that "most waters contained no detectable bacteria, however, and the level of synthetic organic chemicals and inorganic chemicals of concern for which [they] were tested were either below detection limits or well below all applicable standards." Meanwhile, a report by the Drinking Water Research Foundation found that of all samples tested by NRDC, "federal FDA or EPA limits were allegedly exceeded only four times, twice for total coliforms and twice for fluorides."
Studies show that the plastics used for bottles contain chemicals having estrogenic activity, even when they claim otherwise. Although some of the bottled water contained in glass were found polluted with chemicals as well, the researchers believe some of the contamination of water in the plastic containers may have come from the plastic containers. Leaching of chemicals into the water is related to the plastic bottles being exposed to either low or high temperatures.
A study has recently found that the vast majority of bottled water contains microplastics. Following this, the World Health Organization has launched a review into the safety of drinking microplastics. Analysis of some of the world's most popular bottled water brands found that more than 90% contained tiny pieces of plastic
The tests were carried out at the State University of New York in Fredonia as part of a project involving original research and reporting by the US-based journalism organization Orb Media. Using a dye called Nile Red, which binds to free-floating pieces of plastic, the university's Prof Sherri Mason found an average of 10 plastic particles per litre of water, each larger than the size of a human hair. Smaller particles assumed to be plastic but not positively identified were found as well - an average of 314 per litre.
There have been no major outbreaks of illness or serious safety concerns associated with bottled water in the past decade, an FDA official stated in testimony before a 9 July 2009 Congressional hearing. Conversely, as noted in the Drinking Water Research Foundation's (DWRF) 2013 report, Microbial Health Risks of Regulated Drinking Waters in the United States, EPA researchers reported an estimated 16.4 million cases of acute gastrointestinal illness per year are caused by tap water. Subsequent research has estimated that number of illnesses to be closer to 19.5 million cases per year. In addition, the Centers for Disease Control and Prevention (CDC) reports that waterborne diseases, such as Cryptosporidiosis and Giardiasis, cost the U.S. healthcare system as much as $539 million a year in hospital expenses.
Bottled water versus carbonated beverages
Bottled noncarbonated drinking water competes in the marketplace with carbonated beverages (including carbonated water) sold in individual plastic bottles. Consumption of water often is considered a healthier substitute for sodas.
According to the Container Recycling Institute, sales of flavoured, non-carbonated drinks are expected to surpass soda sales by 2010. In response, Coca-Cola and Pepsi-Cola have introduced new carbonated drinks that are fortified with vitamins and minerals, Diet Coke Plus and Tava, marketed as "sparkling beverages."
Bottled water versus tap water
Bottled water may have reduced amounts of copper, lead, and other metal contaminants since it does not run through the plumbing pipes where tap water is exposed to metal corrosion; however, this varies by the household and plumbing system.
In much of the developed world, chlorine often is added as a disinfectant to tap water. If the water contains organic matter, this may produce other byproducts in the water such as trihalomethanes and haloacetic acids, which has shown to increase the risk of cancer. The level of residual chlorine found at around 0.0002 g per litre, which is too small to cause any health problems directly. The chlorine concentration recommended by World Health Organization is between 0.0005 and 0.0002 g/L.
The Natural Resources Defense Council, Sierra Club, and World Wildlife Fund have urged their supporters to consume less bottled water. Anti-bottled-water-campaigns and organizations, such as Corporate Accountability International, typically argue that bottled water is no better than tap water, and emphasize the detrimental environmental side-effects of disposable plastic bottles.
The recent documentary Tapped argues against the bottled water industry, asserting that tap water is healthier, more environmentally sustainable, and more ecologically sound than bottled water. The film focuses on the bottled water industry in the United States. The film has received largely positive reviews, and has spawned college campus groups such as Beyond the Bottle. Yet, as many people remain generally unaware of the negative health and environmental impacts associated with bottled water, recent research in environmental psychology has started to investigate how to reduce the public's consumption of bottled water.
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