Yesterday’s This Day in Water Historic previous had this quote from the AWWA’s Water Prime quality and Treatment (third ed., 1971) (most suggestions eradicated):
“On October 21, 1914, pursuant to the recommendation of the Surgeon Widespread of the Public Effectively being Service, the Treasury Division adopted the first necessities for ingesting water geared up to most people by any widespread service engaged in interstate commerce. These necessities specified the utmost permissible limits of bacteriological impurity, which may be summarized as follows:
- The bacterial plate depend on commonplace agar incubated for 24 [hours] at 37 C was to not exceed 100/cc.
- No a couple of of many 5 10-cc elements of each sample examined was to point presence of B. coli.
- The actually helpful procedures had been these in Commonplace Methods of Water Analysis (APHA, 1912).
These necessities had been drafted by a charge of 15 appointed members. Among the many many members of this charge had been Charles Gilman Hyde, Milton J. Rosenau, William T. Sedgwick, George C. Whipple and C.-E. A. Winslow, names well-known to people who have studied early developments in water treatment.
Though not a part of the necessities, the accompanying first progress report could also be very fascinating as a result of it provides notion into the charge’s deliberations on completely different points. There appears to have been considerable dialogue on whether or not or not the necessities additionally must state that the water shall ‘be free from injurious outcomes upon the human physique and free from offensiveness to the sense of sight, model, or scent’; whether or not or not the usual of water required must be obtainable by the widespread carriers with out prohibitive expense; and whether or not or not it will likely be important to require better than a ‘few and straightforward examinations to seek out out the usual of ingesting water.’”
|US Public Effectively being Service Hygienic Laboratory, c. 1930|