Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Yiewsley]
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Location Type Residua1 Chlorine p.p.m. | Colonies per ml 2 days | Colonies per ml 3 days | Bact. coli (Type1) Probable number per 100 ml | Presumptive Coliacrogencs Probable number per 100 ml |
---|---|---|---|---|
West Drayton P.S. Treated water .15 | 0 | 0 | 0 | |
Location . | West Drayton Pumping Station | Raw or Treated | Treated |
---|---|---|---|
Nil Hazen | 19 p.p.m. | ||
Nil p.p.m. | 235 p.p.m. | ||
Nil | 305 p.p.m. | ||
Normal | Non-Carbonate | Nil p.p.m. | |
7.3 | Total | 205 p.p.m. | |
480 | .12 p.p.m. | ||
315 p p.m. | .02 p.p.m. | ||
Nil p.p.m. | .02 p.p.m. | ||
.039 p.p.m. | Nil p.p.m. | ||
.168 p.p.m. | |||
Nil p.p.m. | |||