For most consumers, the price and brand of a mineral water are the only items observed before buying some bottles to take home. What many forget is that when it is stored, the mineral water has validity.
The mode of storage is one of the factors that most influence this. According to the Brazilian Association of Mineral Water Industries (ABINAM), besides the seal and the label of any bottle or gallon must be in perfect condition, it is also important to check if they are close to chemicals that can change the taste from water.
In general, PET bottles produced from polyethylene terephthalate are safe. But near gasoline fumes, pesticides or chemicals, the taste of the liquid can be changed. The mineral water has a slightly higher value if it is in a glass bottle just because it can isolate the liquid better from the environment.
Temperatures are also responsible for changing the mineral water. Above 35 °C, the chemical balance of the liquid is altered and increase the chances that naturally occurring bacteria in the water will begin to reproduce, influencing the smell and taste of water. ABINAM states that this has nothing to do with the bottle, but with the components already present in the water. So leaving that bottle of water in the car in the sun for eight hours may not be a good idea.
The Mineral Water Has Validity From 6 Months To Two Years
According to ABINAM and Anvisa, the mineral water at the source has no expiration date. She can stay there for thousands of years and still be fit to drink. But when it is stored, other components begin to act. Therefore the entities have determined a validity of 12 months for mineral water without gas stored in a PET bottle, whereas in a glass bottle that term passes to 24 months. Gas mineral waters are valid for 12 months when in glass bottles and six months in plastic bottles. After open, the recommendation of experts is to consume the liquid in up to two weeks.
In the case of the returnable plastic bottles of 10 and 20 liters of mineral water, another validity that must be taken care of is the bottle itself. Two orders-from 2008 and 2009 – from the National Department of Mineral Production (DNPM) determine the three-year shelf life for this product. This deadline was established because, according to the DNPM, after that time the gallons begin to wear out. With transportation, heat and washing inside to reuse, it can begin to compromise hygiene. After all, studies indicate that one bottle is reused, on average, 150 times in three years.
Brazilian laws are quite strict with the quality of bottled mineral water that is marketed. The product is monitored from the source or aquifer up to the final consumer.
It must strictly follow all the quality standards determined for the mineral waters and have the nutritional information and label and bottle validities.