Shock chlorination is a process used in many swimming pools, water wells, springs, and other water sources to reduce the bacterial and algal residue in the water. Shock chlorination is performed by mixing a large amount of sodium hypochlorite, which can be in the form of a powder or a liquid such as chlorine bleach, into the water. Water that is being shock chlorinated should not be swum in or drunk until the sodium hypochlorite count in the water goes down to three ppm or less. Commercial sodium hypochlorite should not be mixed with commercial calcium hypochlorite, as there is a risk of explosion.
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Famous quotes containing the word shock:
“Children demand that their heroes should be fleckless, and easily believe them so: perhaps a first discovery to the contrary is less revolutionary shock to a passionate child than the threatened downfall of habitual beliefs which makes the world seem to totter for us in maturer life.”
—George Eliot [Mary Ann (or Marian)