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
Greenwich 1968
[Report of the Medical Officer of Health for Greenwich Borough]
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| 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 so4 | Natural Fluoride as F | Surface-active material as Manoxol OT | Turbidity units | Colour (Burgess units) | pH value | Electrical Conductivity (micro-ohms) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) | (15) | (16) | (17) | (18) | (19) | (20) | (21) | (22) | (23) |
| Thames-derived *South of River | 156 | 0.023 | 0.081 | 4.0 | 1.22 | 271 | 73 | 4 | 22.9 | 5.3 | 33 | 2.0 | 10 | 62 | 0.30 | 0.02 | 0.1 | 14 | 7.9 | 560 | ||
| Bexley Well | 4 | 0.007 | 0.019 | 5.3 | 0.15 | 329 | 80 | 21 | 0.15 | 0.0 | 1 | 7.2 | 580 | |||||||||
| (a) Crayford No. 1 | 4 | 0.009 | 0.050 | 9.3 | 0.56 | 446 | 185 | 35 | 0.30 | 0.1 | 2 | 7.0 | 840 | |||||||||
| (b) Crayford No. 2 | 4 | 0.008 | 0.023 | 6.9 | 0.21 | 325 | 96 | 29 | 0.20 | 0.2 | 2 | 7.2 | 590 | |||||||||
| (c) Crayford No. 3 | 4 | 0.009 | 0.027 | 6.5 | 0.25 | 360 | 120 | 31 | 0.25 | 0.0 | 1 | 7.2 | 680 | |||||||||
| Deptford Well | 4 | 0.006 | 0.028 | 6.3 | 0.15 | 386 | 145 | 43 | 0.30 | 0.0 | 1 | 7.2 | 760 | |||||||||
| Darenth Well | 4 | 0.009 | 0.025 | 4.6 | 0.12 | 272 | 46 | 18 | 0.15 | 0.1 | 0 | 7.3 | 500 | |||||||||
| Wansunt Well | 16 | 0.075 | 0.038 | 5.9 | 0.19 | 345 | 97 | 30 | 0.20 | 0.1 | 2 | 7.2 | 660 | |||||||||
| Wilmington Well | 4 | 0.010 | 0.026 | 6.5 | 0.21 | 296 | 65 | 26 | 0.15 | 0.0 | 1 | 7.3 | 550 |
*Hampton, Surbiton and Walton.