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 | Residual Chlorine p.p.m. | Colonies per ml 2 days | Colonies per ml 3 days | Bad. coli (Type 1) Probable number per 100 ml | Presumptive Colicerogenes Probable number per 100 ml |
---|---|---|---|---|---|---|
West Drayton P.S. | Treated water | 5 | 0 | 0 | 0 |
Sample No. : 62402. Date Taken : 10th April, 1954.
Remarks: This water is moderately hard in character and contains no excess of mineral or saline constituents.
It conforms to the highest standard of organic quality.
West Drayton Pumping Station. | Treated | ||
Nil Hazen. | 20 p.p.m. | ||
Nil Hazen. | 230 p.p.m. | ||
Nil. | 215 p.p.m. | ||
Normal. | Nil p.p.m. | ||
7.4. | 215 p.p.m. | ||
480. | .08 p.p.m. | ||
325 p.p.m. | Nil p.p m. | ||
0.3 p.p.m. | Nil p.p.m. | ||
.085 p.p.m. | Trace p.p.m. | ||
.120 p.p.m. | |||
Nil p.p.m. |