Home economics

Do you tap water right in the glass?

Water that stays standing still long in the pipes can cause unfortunate accumulation of metals.

Do you tap water right in the glass?

The water you tap from the kitchen faucets contains living organisms. An essential nutrient, the Norwegian Medical Association calls it. The water also has different grades depending on which minerals it has been in contact with.

This means that water is not just water, but its qualities change according to how it is treated. In this context, it also matters how to tap the water out of the tap in the kitchen.

Do you let it drain before you use it or tap it right into a cookware or water bottle?

Especially if you have children in the house, it’s important if you do the one in front of the other.

The reason is that water can contain smaller amounts of metals, including copper.

Stagnant water tears on the pipes

For water that stays in the pipes can begin to tear on the inside.

– Therefore, let the water drain before using it, explains chief engineer Wenche Fonahn at the Institute of Public Health.. no.

Section Manager at Mattilsynet in Oslo, Asker and Bærum, Solveig Eriksrud, adds that, in addition to precipitation of metals, bacteria may also grow up if water is left in the pipes for a long time.

The Danish website bolius. dk explains the possible emergence of bacteria that the temperature of the water can rise inside a dwelling relative to the temperature the water has in the public wiring.

The higher temperatures explain them with “poor insulation, or because the cold water pipes are too close to the hot water pipes. In both cases, the water is heated by the surroundings, “they write.

– Run it until it’s called

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– There will not be an acute risk of increased concentrations in drinking water, but anyone who wants to prevent copper intake should let the water drain before it is taken into use, “says Fonahn, adding that infants can react to excessive copper concentrations.

You should therefore let the water drain until it’s become as cold as possible because then all the water that has been left in the pipes has disappeared. Then keep your index finger away in the water and notice until it does not get colder. A sensible index finger rule, one can say, she elaborates.

Especially important in the morning

Senior engineer at the Water and Drainage in Oslo, Margrethe Husebø, adds that no matter how the water is to be used for cooking or drinking, you should let it drain if it’s been quiet for a while.

Solveig Eriksrud emphasizes that it is important in the morning to let the water drain.

Because it has been quiet for a long time and there may have been an unwanted accumulation of substances, she says.

On its pages, the National Institute of Public Health writes that when the water is used regularly, the concentrations will be minimal. “However, water that has been in the pipeline will usually have significantly higher concentrations. It is not uncommon for water that has been in the pipes overnight to contain 2 to 3 mg / l of copper, “they add.

According to the drinking water regulations, the limit value for water is 1.0 mg / l.

Metals in the drinking water

In addition to copper, drinking water may contain several other metals, but without these representing a health risk.

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According to the National Institute of Public Health, drinking water can also contain iron, zinc, lead, cadmium and calcium. But in Norway, the drinking water regulations form the framework for all water produced in public water systems

– The amount of the different metals will depend on which pipes you have in your house, “says Eriksrud.

She adds that the local waterworks that are responsible for the water to the housing or mains lead into an area.

– And, as in Oslo, for example, the water is monitored regularly. In case of deviations, these will therefore be followed up quickly, explains Eriksrud.

Therefore, it may as well be the pipeline in the individual dwelling that could be the source of elevated levels of substances in the water.

In some cases, the luminaire itself may be a source of metal precipitation, and then mainly lead.

– In general, the luminaire in Norwegian kitchen benches should be of good quality, says former technical director, now affiliated with the consultant at Norske Rørleggerbedrifters Landsforening, Ole Larmerud, to click. no.

Generally, we have gained a global market that is more opaque and less controllable, with greater risk that the product may contain hazardous metals such as lead. Therefore, as a consumer, you must be aware when purchasing a new aramather, that it is accompanied by documentation that it is approved and free of harmful metals. If not, you should steer away.

Drinking Water Regulations

The water most of us tap through the kitchen faucets can almost be filtered through a set of regulations, called the drinking water regulations.

One of the requirements of the regulation is that when it comes out of your faucet, it should be “hygienically safe, clear and without any smelling odor, taste or color. It shall not contain physical, chemical or biological components which may cause a health hazard in normal use, “is stated in Section 12 of the Regulations.

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According to the Norwegian Water Agency, the waterworks are subject to strict water quality and supply safety requirements. “Water quality requirements include physical, chemical and microbiological conditions,” they write on their pages.

– For Oslo’s part, we can guarantee that the water transmitted through the pipeline is in accordance with the drinking water regulations, Margrethe Husebø explains..

Also read:

Clean water at the cabin

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