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when so treated remained practically sterile for four days during constant
use. No odour or taste from the chemicals is noticeable. How often
such treatment need be applied must vary with local conditions, but
probably the application twice a week in the proportions named would
ensure a practically sterile swimming bath or pool."—Reprint, Water and
Water Engineering, page 147, June 15th, 1910.
Extract.
Water Sterilization.*
" ...We believe that the process (hypochlorite treatment) is not only
" likely to be useful as an emergency method, but that ultimately it will
" be accepted in this country as one of the ordinary steps in water
" purification, and just as we now drink water which has been treated
" with coagulants and filters to make it clear, so shall we be equally ready
" to adopt a simple and cheap process, whereby the bacterial purity of the
" water can be insured also. If we are content to drink waters which
" have been treated with large quantities of sulphate of iron, why should
" we reject without reason an infinitely small quantity of chlorine."—
Reprint, The Surveyor and Municipal and County Engineer, page 803,
June 10th, 1910.
* The Surveyor and Municipal and County Engineer, pages 819 to 821.
" Eight Examples of Hypochlorite Sterilisation of Water : Minneapolis ; Montreal;
Harrisburg, Pennsylvania; Quincy, Illinois; Hartford, Connecticut; New Jersey;
Toronto."