London's Pulse: Medical Officer of Health reports 1848-1972
View report page
Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Lambeth 1971
[Report of the Medical Officer of Health for Lambeth Borough]
This page requires JavaScript
Average Results of the Chemical Examination of Water Supplied to the
London Borough of Lambeth during 1971
Milligrammes per litre (unless otherwise stated)
| Description of the Sample | Number of Samples | Ammoniacal Nitrogen | Albuminoid Nitrogen | Nitrate Nitrogen | Oxygen abs. from KMnO44 hrs. at 27°C. | B.O.D. 5 days at 20°C. |
|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| River Thames — derived | 364 | 0.029 | 0.084 | 6.1 | 1.04 | - |
| Honor Oak | 3 | 0.065 | 0.011 | 0.2 | 0.05 | |
| Description of the Sample | Hardness (total) CaC03 | Hardness (non-carbonate) CaCO3 | Magnesium as Mg | Sodium as Na | Potassium as K | Chloride as C1 |
| (8) | (9) | (10) | (11) | (12) | (13) | |
| River Thames — derived | 281 | 90 | 5 | 23.5 | 5.1 | 34 |
| Honor Oak | 293 | 53 | 15 | |||
| Description of the Sample | Phosphate as PO4 | Silicate as SiO2 | Sulphate as SO4 | Natural Fluoride as F | Surface-active Material as Manoxol OT | |
| (14) | (15) | (16) | (17) | (18) | (19) | |
| River Thames — derived | 2.3 | 10 | 64 | 0.15 | 0.02 | |
| Honor Oak | 0.43 | |||||
| Description of the Sample | Turbidity units | Colour (Burgess units) | pH value | Electrical Conductivity (micromhos) | ||
| (20) | (21) | (22) | (23) | |||
| River Thames — derived | 0.1 | 13 | 7.8 | 580 | ||
| Honor Oak | 0.0 | 6 | 7.2 | 530 | ||