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Scientific help please

Discussion in 'Personal' started by TheoGriff, Jan 17, 2012.

  1. TheoGriff

    TheoGriff Star commenter

    This morning while I was out teaching, a lady called at our house and spoke to Mrs TG about water quality. She said that our water is infamous for its poor quality.
    Mrs TG took her into the kitchen, filled a pint glass with water. The lady plugged in a little machine and put two electrodes (I may have got this wrong, I am no scientist) into the water.
    After about 5 minutes, the water had changed to an ochre colour, with a great deal of sediment floating about. It was still there when I got home a few minutes ago. We have filtered the water twice through kitchen paper, large amount of unpleasant deposit, still lots floating around.
    The lady told Mrs TG that this sediment was dangerous minerals and metals, including lead and copper, and that we shouldn't drink or cook with the water, but spend several hundred pounds on a machine that her company could supply and fit to remove all the danger from our water.
    OK, a Scientist's view please?
    I am naturally sceptical.
    __________________________________________________
    TheoGriff. Member of the TES Careers Advice Service.
    I do Application and Interview one-to-ones, and also contribute to the Job Application Seminars. We look at application letters, executive summaries and interviews, with practical exercises that people really appreciate.
    www.tes.co.uk/careerseminars
     
  2. Does this look familiar?




    <h1>Atmos Water Test</h1>



    It is essential that our drinking water is free from contaminants,
    impurities, bacteria and viruses. The results of our recent tests on the
    water that is all around us are shown below.
    Two different
    instruments that are both related to testing the Total Dissolved Solids
    (TDS) in the water were used. Total Dissolved Solids (TDS) in a liquid
    is defined as the combined content of all the inorganic and organic
    substances contained in a liquid which are present in a molecular,
    ionized or micro-granular suspended form. TDS tests are used to study
    the quality of the
    water in relation to the amount of chemical
    contaminants in the water and aesthetic characteristics of the water.
    The most primary sources for TDS in water is agricultural runoff, soil
    contaminants, pollution from industrial and sewage plants and even
    pesticides from surface runoff.
    Atmos h2o water generators do not
    suffer from contaminants and impurities found in pipes and soil as the
    water is simply produced from the air we breathe. The Atmos h2o 6-stage
    filtration and sterilizatin process eliminated any contaminants,
    impurities, bacteria and viruses in the water.
    Most common TDS contaminants: Calcium, Phosphates, Nitrates, Sodium, Arsenic, Chloride, Pesticides, Sodium, Lead, Copper, Fluoride, Radium.
    Tap
    and bottled water range widely within the TDS scale and the EPA and FDA
    have loose requirements regarding the purification of water. Tap water
    may leave the purification plant clean, albeit with chlorine and other
    cleaning chemicals, it can be quickly contaminated through pipes by
    runoff.
    [​IMG]
    Tests
    were conducted using electrolysis which moves an electric current
    through the water to make all the organic and inorganic substances
    become apparent. The result after one minute of electrolysis with each
    type of water is shown above.












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  3. doomzebra

    doomzebra Occasional commenter

    something on the electrodes contaminated your water - it is a complete scam
     
  4. doomzebra

    doomzebra Occasional commenter

    EPA!!!!!
    EPA!!!!!
     
  5. Anonymous

    Anonymous New commenter

    They look suspiciously like urine samples to me, particularly the one labelled 'Competitor'.
     
  6. giraffe

    giraffe New commenter

    Putting a current through a sample of water should not 'reveal' contamination.
    If you are concerned about water quality, get in touch with your supplier and ask them how they measure up to water quality standards.
     
  7. giraffe

    giraffe New commenter

    Tee Hee, they are taking the p*ss!

     
  8. He he ....they were not electrodes they were tiny tea bags. Indeed, rather than having a poisonous elixir of contaminated sludge, you have a lovely glass of Ty-Phoo.
     
  9. giraffe

    giraffe New commenter

  10. One wonders why you're not dead already.
     
  11. Anonymous

    Anonymous New commenter

    It has made him bald!
     
  12. blazer

    blazer Star commenter

    It is a scam. Passing an electric current through your water would not generate large amounts of 'scum' unless the anode was actually releasing it! Any metals present in the water at the start would be deposited onto the cathode however this is a very slow process and would take hours.

    Was it battery operated or plugged into the mains? A very large current could cause the metals being deposited to 'burn' (oxidise) which may produce some small precipitates.


    Blazer (Chemistry teacher and former electroplating shop foreman)!
     
  13. blazer

    blazer Star commenter

    Copper minerals would be visible and give the water a pale blue tinge. Any copper detectable in drinking water probably comes from the pipes it flows through!
     
  14. doomzebra

    doomzebra Occasional commenter

    a nice iron anode and bob's your rusty brown uncle
     
  15. Exactly, an iron cathode would give you the brown colour and, if the current was high enough, the scum. This is a common scam; exactly the same is used for those 'detoxifying foot spas', where the brown scum is supposed to be the toxics coming out of your body.
     
  16. TheoGriff

    TheoGriff Star commenter

    Thank you very much indeed for all your explanations, and for your efforts in researching this for me.
    I confess with shame that I never thought of googling "water filter test scams" as Giraffe and others did on my behalf.
    [​IMG]
    We can now spend that &pound;200 on some better liquid. A couple of cases of Rioja perhaps? Thank you again.
    Best wishes to all of you.
    __________________________________________________
    TheoGriff. Member of the TES Careers Advice Service.
    I do Application and Interview one-to-ones, and also contribute to the Job Application Seminars. We look at application letters, executive summaries and interviews, with practical exercises that people really appreciate.
    www.tes.co.uk/careerseminars
     
  17. jacob

    jacob Lead commenter

    If the water was that bad the water company could be prosecuted.
    In fact water delivered through the mains in this country is some of the best in the world. Tap water "quality" usually exceeds bottled water quality.
     
  18. blazer

    blazer Star commenter

    If we pm you our addresses you could send us a bottle each as a sort of professional fee!
     
  19. blazer

    blazer Star commenter

    Theo lives in Spain, the water is probably even better there!

    Personally I never drink the stuff as I know from a good authority that fish have sex in it![​IMG]
     
  20. Gardening Leaves

    Gardening Leaves New commenter

    Trading standards!
     

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