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 Pot Ganesh
Do you have earthen pot at home for water storage?
Do you replace it every year during गणेश चतुर्थी (at least once. Ideally once a six month replacement needed)? 

Every year, on Ganesh Chaturthi, one should break the pot and get new pot. This is to avoid graha peeda (pain) (We call it viral or bacterial infection) arises due to accumulation of doshic properties from water by pot soil, through out the year.

Pottery is a perfect life science.

 
Earthen Pot balances minerals in your drinking water.
Earthen Pot balances water dosha (Water in some region is naturally Kapha dominant or Vata dominant or Pitta dominant). If dosha is not balanced, you are more than likely having imbalance of dosha. Hair fall, acidity, infections – they are natural in imbalanced doshic body!.
 
Most of service class spend 12 hrs in office. In office, they drink water from RO plant. There is no earthen pot. 😉
 
Most household now have RO. They don’t have earthen pot at home. Even if they have POT, they don’t replace it every six months.
 
Mineral deficiency? Oh! Natural! 🙂
 
What type of modernity we proud of? 😉 :p
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Three reasons why we replace earthen water pot.

1) Sustainable economy for the families engaged in pottery
2) Cooling. Water in pot cools down
3) For better efficiency to absorb toxins/extra minerals

Fresh earthen pots have multitudinous and crisscross narrow channels running from inside to outside of their walls like in a sponge. Or, we say that the walls of fresh earthen pot are highly porous.

When water is held in such fresh earthen pot, part of the water bleeds out through these pores by capillarity and interfacial affinity and makes the outer surface of the pot rather wet.

However, the water from inside cannot gush out though these pores like a shower because of the crisscross nature and narrowness of the channels and the fineness of the pores.

Thus, the effective exposure area for water in a fresh earthen pot, is not only the top meniscus in the pot but also the wetness on the outer surface of the pot. When water evaporates from these surfaces, the molecules leaving the pot take along heat from the pot’s walls and the water in the pot becomes cooler.

Potable water is not pure water; it contains some minerals such as potassium, sodium, magnesium and calcium salts, suspended particles, dissolved oxygen and carbon dioxide, etc among others.

During the course of usage, some of these calcium and magnesium ions in water tend to precipitate as insoluble carbonates and sulphates which gradually plug the pores and channels of the pot walls.

The suspended particles, dust collected inside and outside the pot during usage and some algal and moss growths also block these pores and discourage the development of wetness of the outer walls of the pot.

In the event of decreased net area of exposure, the rate of evaporation and the scope for loss of internal heat is drastically reduced.

That is why earthen pots lose their efficiency in keeping the water cool after being used for a few years.

PROF. A. RAMACHANDRAIAH

Department of Chemistry

National Institute of Technology Warangal

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So even if we clean their surface and give sun exposure, they are less efficient.

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