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  • Category: Science

    Query about quality of potable water


    Wondering about the quality of bore well water if boiled? On this page you will get answers to all your queries.

    Q1. What is the salt like thing settled at the bottom when I boil water?
    Q2. And what is causing stains on water mug?
    Q3. If this is iron, why it is deposited even in a plastic water mug?
    Q4. Is this water safe to use?
    Q5. What is the solution to this problem?
    We use bore-well (boring) water in our flat, pumped to overhead tank using submersible pump.
  • #140675
    Borewlls in certain areas will have hard water. Hard water means water in which chemicals or salts of sodium, magnesium, calcium, iron etc are present dissolved in the water, much more than the normal water we get from rivers .
    When the hard water is heated the water evaporates and the dissolved salts settle down in the vessel. Depending on the quantum of hardness and the kind of chemicals , they form thick or thin crusts and lining in the vessel. You need acidic cleaners to remove them. However by continuous and regular heating f such water the layer of coating becomes thicker and thicker and becomes difficult to remove.

    Even without heating the salts can form crust if left untouched for days, as the water gets evaporated slowly by itself. That is what you see in plastic mug.

    People who are accustomed to soft water from rivers and Municipal water supply, will not like the hard water. However when the total dissolved salts are very much high, then that can cause harm by long use, like kidney stones, problems for your digestive system etc. Soaps wont lather easily in hard water. Cooking using hard water will result in using more fuel, and sometimes even white rice coked may appear yellow or slight brown.

    What is the solution for hard water wit dissolved salts?

    RO filters(Reverse Osmosis filters) with TDS control are the best solution for purifying the hard water. Generally the municipal water supply keep the TDS between 35 to 50. So the TDS control may be fixed in your RO filter to give output water having TDS around 50. That will taste normal.

    Now you have various brands of RO filters with TDS control. You may choose a suitable one considering the after sales service at your place. ( I was using Kent RO filter when in one place where I had to use hard water. I had a satisfactory experience with that)

  • #140676
    I'm not fully convinced with the answer. Why the salt is white in vessel but deep brown in plastic mug? What is it exactly? Iron, Sodium, Magnesium? Any homemade solution other than RO filters?

  • #140718
    When borewll's water is heated/boiled,some of the chemical impurities evaporates and the dissolved salts settle down in the bottom of vessel. Water contains 3 type of impurities 1.physical impurities 2. chemical impurities .3. Bacterial impurities. When water is boiled all three type of impurities vanishes and water is safe for drinking.
    The salts appears at the bottom are flourides and clorides. Flourides are very harmful for bones and teeth, it can dissolve the bones if taken for long time.
    Drinking water without boiling or purification is not safe. You must not take such type of water. R O / acquaguard is best for safe drinking water. UV fills the bacteria.

    The greatest wealth in this world is mental peace and good health.

  • #140729
    Why the salt is white in vessel but deep brown in plastic mug?

  • #140771
    Perhaps water contains Flourides, Chlorides orIron Particles. Various salts reacts with metals in vessels. Diposite of salts is more dangerous to us. It may causes stone, decay of teeth and bone. You must use a good water purifier or soil tested in scientific laboratory. You may dig for a deep tubewell from another side.

  • #140881
    Water is going to be the most precious commodity in future as with increase of population and industrialization its demand is going to increase exponentially. It has many forms - rain water, bore well water, river water, sea water, pond water etc. All are not drinkable. Even the drinkable have different grades of hardness and require proper processing before use. These things are already covered in the previous posts by our knowledgeable members.
    When you dig a bore well then it is better to get the water sample tested by some laboratory so that its quality can be assured and it should be treated based on the report.
    A good water purifier is definitely required for any water to be used for drinking purposes for a continuous period.
    Globally efforts are being made for water harvesting and conservation that is to preserve the rain water in ponds or underground reservoirs. People have started to understand the value of this commodity.
    Some people say why to worry for water when we have rains every year and our surface reservoirs are full. It is not so simple. In fact a large percentage ( more than 95 ) of rains spill and through rivers goes to the oceans. The little part absorbed in the earth either comes out in the form of spring water or remains in underground to be exploited by some bore well. Some water retained in big dams and ponds is used by the masses and rest which goes to oceans is wasted in the sense that as soon as it meets the mighty oceans it is mixed in it and becomes the saline ( about 30 grams per liter) water.
    The biggest challenge today is how to retain this water on land and use for the benefit of mankind.

    Knowledge is power.


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