London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Bromley 1969
[Report of the Medical Officer of Health for Bromley]
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AVERAGE RESULTS OF THE CHEMICAL EXAMINATION OF WATER SUPPLIED TO THE LONDON BOROUGH OF BROMLEY, 1969
Milligrammes per litre (unless otherwise stated)
| Description of the Sample | No. of Samples Day of the month | Ammoniacal Nitrogen | Albuminoid Nitrogen | Nitrate Nitrogen | Oxygen abs. from KMnO4 4 hrs. at 27°C. | B.O.D. 5 days at 20°C | Hardness (total) CaCO3 | Hardness (non-carbonate) CaCO3 | Magnesium as Mg | Sodium as Na | Potassium as K | Chloride as C1 | Phosphate as P04 | Silicate as SiO2 | Sulphate as S04 | Natural Fluoride as F | Surface-active material as Manoxol OT | Turbidity units | Colour (Burgess units) | PH value | Electrical Conductivity (micromhos) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) | (15) | (16) | (17) | (18) | (19) | (20) | (21) | (22) | (23) |
| All Thames derived | 371 | 0.024 | 0.083 | 4.4 | 1.05 | 282 | 79 | 5 | 24.0 | 5.4 | 32 | 2.1 | 9 | 58 | 0.25 | 0.02 | 0.1 | 11 | 7.9 | 550 | ||
| Merton | 4 | 0.005 | 0.017 | 0.2 | 0.08 | 252 | 38 | 13 | 0.50 | 0.4 | 4 | 7.4 | 430 | |||||||||
| Eynsford | 8 | 0.008 | 0.018 | 4.7 | 0.08 | 272 | 51 | 16 | 0.10 | 0.1 | 0 | 7.2 | 480 | |||||||||
| Horton Kirby | 8 | 0.019 | 0.025 | 4.7 | 0.12 | 277 | 58 | 20 | 0.15 | 0.0 | 2 | 7.3 | 500 | |||||||||
| Jewels Wood | 4 | 0.003 | 0.021 | 3.0 | 0.03 | 253 | 37 | 9 | 0.10 | 0.0 | 2 | 7.4 | 430 | |||||||||
| Lullingstone | 8 | 0.008 | 0.020 | 4.5 | 0.04 | 265 | 43 | 15 | 0.10 | 0.0 | 1 | 7.2 | 470 | |||||||||
| North Orpington | 8 | 0.010 | 0.022 | 4.9 | 0.06 | 291 | 54 | 14 | 0.10 | 0.1 | 2 | 7.1 | 490 | |||||||||
| Orpington | 4 | 0.007 | 0.031 | 8.1 | 0.14 | 317 | 73 | 22 | 0.10 | 0.0 | 3 | 7.1 | 570 | |||||||||
| Shortlands | 12 | 0.011 | 0.019 | 4.8 | 0.08 | 292 | 76 | 20 | 0.15 | 0.0 | 1 | 7.3 | 530 | |||||||||
| Sundridge | 16 | 0.008 | 0.021 | 3.3 | 0.08 | 222 | 57 | 18 | 0.15 | 0.0 | 2 | 7.5 | 420 | |||||||||
| West Wickham | 4 | 0.005 | 0.015 | 5.6 | 0.14 | 299 | 73 | 16 | 0.10 | 0.0 | 1 | 7.2 | 540 |