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hard water is beneficial because:

it can provide calcium and magnesium to humans

it has a correlation to a reduced risk of cardiovascular disease (narrowed or blocked blood vessels, which can lead to heart attacks or strokes)

it is less likely to cause expensive corrosion of pipes

it tends to taste better than soft water

"What Are Some Advantages of Hard Water?" Reference. Reference An IAC Publishing Labs Company, 2016. Web. 24 Oct. 2016. <https://www.reference.com/home-garden/advantages-hard-water-332a4c1fe0a96c94>.

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Hard water is able to reduced the risk of cardiovascular disease. Also good for the development of teeth and bones.

"What Are Some Advantages of Hard Water?" Reference. N.p., 2016. Web. 24 Oct. 2016. <https://www.reference.com/home-garden/advantages-hard-water-332a4c1fe0a96c94#>.

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Each year the amount of soil lost due to erosion by water is around 970 million tonnes in Europe alone. This is about the same size as Berlin, which has an area of 891.8 km squared, or a 1 centimetre loss from an area twice the size of Belgium. It takes around 100 years for one centimetre of new soil to form. Because erosion is not going to go away this is a good thing because we will have to come up with more water softeners to soften the continuously hardening water. This is good for the economy and there is more space in the market for innovation.

"Soil Area the Size of Berlin Lost Each Year Due to Water Erosion in the EU - EU Science Hub - European
Commission." EU Science Hub. EU Commission, 07 Oct. 2016. Web. 24 Oct. 2016. <https://ec.europa.eu/jrc/en/news/soil-area-size-berlin-lost-each-year-due-water-erosion-eu>.

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Research shows that hard water can beneficial in preventing heart and cardiovascular diseases.

"Soft Water vs Hard Water – What Are the Health Benefits?" Best Water Softener Reviews 2016. Water Softener Critic, 2015. Web. 24 Oct. 2016. <http://www.watersoftenercritic.com/soft-water-vs-hard-water/>.

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It tastes better than soft water
More taste of the water

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- Magnesium and Calcium are really important for our health , so that it is quite important to cook with hard water
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3775162/
- Drinking hard water can reduce your risk of osteoporosis because of the calcium carbonate in the water. For this to be true, however, a good supply of vitamin D is necessary in the diet since it helps your body absorb calcium
http://www.safebee.com/health/hard-water-helping-or-hurting-your-health
-  It is very difficult to wash your clothes with  hard water as it requires more soap and leaves a messy scum that cannot be washed out easily.
http://ecoursesonline.iasri.res.in/mod/page/view.php?id=959

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There is a connection between Hard water and lower heart disease mortality
http://extension.usu.edu/waterquality/whats-in-your-water/hardwater

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It is less likely to cause corrosion of  pipes  than soft water.

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Water dissolves more substances than any other liquid. Wherever it travels, water carries chemicals, minerals, and nutrients with it.
http://www.allaboutwater.org/water-facts.html

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- It tastes better than soft water
-> due to minerals in the water. Soft water contains more sodium which leads to a slightly salty taste in soft water.
"GCSE SCIENCE CHEMISTRY HIGH SCHOOL - Hardness of Water - Advantages - Disadvantages - Lime Scale - Scum - Gcsescience.com." GCSE SCIENCE CHEMISTRY HIGH SCHOOL - Hardness of Water - Advantages - Disadvantages - Lime Scale - Scum - Gcsescience.com. Web. 24 Oct. 2016. <http://www.gcsescience.com/f6.htm>.

http://www.gcsescience.com/f6.htm

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- More taste of the water
- Prevention of heart disease
- Good for the development and maintenance of bones and teeth
- Lots of minerals contained which means it is good for health

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Hard water is good for reducing the risk of weak bone diseases like osteoporosis because of the calcium carbonate in the water.

Spitzer, Nina. "Living with Hard Water." SheKnows. N.p., 20 Apr. 2014. Web. 24 Oct. 2016. <http://www.sheknows.com/home-and-gardening/articles/809742/hard-water-facts-and-solutions>.

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It contains calcium which avoid absorption of fats. It also contains Magnesium which relieves constipation.
Sengupta, Pallav. "Potential Health Impacts of Hard Water." International Journal of Preventive Medicine. Medknow Publications & Media Pvt Ltd, 4 Aug. 2013. Web. 24 Oct. 2016. <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3775162/>.

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Hard water helps to reduce heart disease.
http://www.patana.ac.th/parents/curriculum/chemistry/units/LR1104.html

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- Calcium and magnesium are necessary for the dietary needs of humans, so hard water is a good source.
- It tastes better
-  It has not undergone any chemical procedures, so it is "pure"

"Water Quality." Hard Water. Utah State University Extension, n.d. Web. 24 Oct. 2016. <http://extension.usu.edu/waterquality/whats-in-your-water/hardwater>.

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Hard water tastes better
and it has less sodium then soft water.
Less likely to cause corrosion of pipes.
"Water Quality." Hard Water. Utah State Unevirsity, n.d. Web. 24 Oct. 2016.

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Magnesium and Calcium are part of the dietary needs in humans. Some people have found a correlation between hard water and a lower chance to obtain cardiovascular disease.

"Water Quality." Hard Water. Utah State University, n.d. Web. 24 Oct. 2016. <http://extension.usu.edu/waterquality/whats-in-your-water/hardwater>