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
Orpington 1963
[Report of the Medical Officer of Health for Orpington]
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Milligrammes per litre (unless otherwise stated).
| Description of the Sample | No. of Samples | Ammoniacal Nitrogen | Albuminoid Nitrogen | Nitrate Nitrogen | Chlorides as CI. | Oxygen abs. from KMn04 4 hrs. at 27°C. | Turbidity units | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sundridge | 10 | 0013 | 0019 | 2.4 | 19 | 0 04 | Nil | ||||
| Lullingstone | 6 | 0 021 | 0 022 | 3.4 | 15 | 006 | 0.4 | ||||
| Eynsford | 7 | 0 003 | 0 021 | 3.7 | 15 | 002 | Nil | ||||
| Horton Kirby | 8 | 0 007 | 0018 | 4.4 | 19 | 0 06 | Nil | ||||
| Orpington | 4 | 0014 | 0022 | 5.8 | 16 | 004 | Nil | ||||
| North Orpington | 8 | 0 008 | 0019 | 4.3 | 14 | 0 02 | 0.3 | ||||
| Description of the Sample | Colour (Burgess) Scale | Hardness (Total) | Hardness (non. carbonate) | pH Value | Sodium as Na | Potassium as K | Electrical Conductivity (microhms) | ||||
| Sundridge | Nil | 214 | 44 | 7.3 | 9.5 | 2.0 | 410 | ||||
| Lullingstone | 1 | 258 | 26 | 7.2 | 8.5 | 1.2 | 480 | ||||
| Eynsford | Nil | 260 | 30 | 7.2 | 90 | 1.2 | 470 | ||||
| Horton Kirby | Nil | 264 | 40 | 7.2 | 10.0 | 1.8 | 490 | ||||
| Orpington | Nil | 282 | 34 | 7.1 | 10.0 | 1.7 | 510 | ||||
| North Orpington | Nil | 270 | 26 | 7.1 | 8.5 | 1.8 | 480 | ||||