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 1967
[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, 1967
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 Cl | Phosphate as PO4 | Silicate as SiO2 | Sulphate as S04 | Natural Fluoride as F | Surface-active material as Manoxol OT | co2 | 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 | 363 | 0.024 | 0.089 | 4.1 | 1.12 | 282 | 73 | 5 | 22.5 | 5.1 | 30 | 1.9 | 10 | 64 | 0.30 | 0.01 | 0.1 | 12 | 7.9 | 590 | ||
| Eynsford | 8 | 0.009 | 0.030 | 4.0 | 0.08 | 265 | 37 | 2 | 9.0 | 1.4 | 15 | 14 | 0.10 | 31 | 0.0 | 1 | 7.3 | 500 | ||||
| Horton Kirby | 8 | 0.004 | 0.031 | 4.8 | 0.08 | 268 | 44 | 2 | 10.0 | 1.9 | 19 | 25 | 0.15 | 34 | 0.0 | 1 | 7.2 | 520 | ||||
| Jewels Wood | 4 | 0.010 | 0.030 | 3.0 | 0.06 | 235 | 33 | 2 | 7.5 | 1.4 | 13 | 22 | 0.10 | 22 | 1.9 | 5 | 7.4 | 400 | ||||
| Lullingstone | 8 | 0.004 | 0.025 | 4.0 | 0.14 | 259 | 33 | 3 | 9.0 | 1.1 | 15 | 16 | 0.10 | 29 | 0.1 | 1 | 7.3 | 500 | ||||
| Orpington | 4 | 0.006 | 0.023 | 6.5 | 0.14 | 296 | 51 | 3 | 10.5 | 1.8 | 16 | 20 | 0.10 | 33 | 0.0 | 1 | 7.2 | 570 | ||||
| Shortlands | 8 | 0.007 | 0.030 | 4.8 | 0.08 | 291 | 67 | 4 | 11.5 | 1.6 | 18 | 50 | 0.15 | 30 | 0.2 | 1 | 7.3 | 550 | ||||
| Sundridge | 15 | 0.008 | 0 025 | 3.3 | 0.06 | 221 | 52 | 3 | 9.0 | 2.1 | 18 | 32 | 0.15 | 15 | 0.0 | 1 | 7.5 | 430 | ||||
| West Wickham | 3 | 0.008 | 0.029 | 5 4 | 0.04 | 282 | 44 | 2 | 9.5 | 1.4 | 13 | 24 | 0.10 | 33 | 0.0 | 1 | 7.3 | 530 |