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 1948
[Report of the Medical Officer of Health for Orpington]
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| Description of the Sample | No. of Samples | Ammo-niacal Nitrogen | Albuminoid Nitrogen | Oxidised Nitrogen | Chlorides as CI | (a) | (b) | Turbidity in terms of Silica | (c) | Hardness (Total) | Hardness (Perm) | PH Value | (d) | (e) | Conductivity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Orpington Well | 3 | 0.010 | 0.017 | 5.2 | 16.0 | _ | 0.16 | _ | 0 | 324 | 81 | 7.1 | — | — | 475 |
| North Orpington | 4 | 0.001 | 0.019 | 4.2 | 14.5 | — | 0.12 | — | 3 | 299 | 100 | 7.1 | — | — | 450 |
| Jewels Wood | 2 | 0.003 | 0.016 | 1.3 | 11.3 | — | 0.06 | — | 0 | 266 | 77 | 7.4 | — | — | 400 |
| West Wickham | 5 | 0.000 | 0.019 | 4.0 | 13.5 | — | 0.08 | — | 0 | 303 | 81 | 7.2 | — | — | 426 |
| Sundridge | 3 | 0.045 | 0.012 | 2.0 | 15-8 | — | 0.07 | — | 0 | 257 | 90 | 7.3 | — | — | 375 |
| Shortlands | 3 | 0.000 | 0.024 | 4.5 | 19-0 | — | 0.15 | — | 0 | 315 | 129 | 7.2 | — | — | 475 |
| Honor Oak | 3 | 0.000 | 0.017 | 0.2 | 15.7 | — | 0.06 | — | 7 | 272 | 101 | 7.1 | — | — | 475 |
| Eynesford | 3 | 0.010 | 0.019 | 3.1 | 16.0 | — | 0.13 | — | 0 | 313 | 78 | 7.2 | — | — | 450 |
| Bexley | 3 | 0.003 | 0.015 | 4.2 | 16.7 | — | 0.14 | — | 0 | 310 | 80 | 7.1 | — | — | 475 |
| Percentage of samples negative 100 ml. | Bact. coli per 100 ml. | ||
|---|---|---|---|
| Orpington | 255 | 100.0 | Nil |
| North Orpington | 255 | 100.0 | Nil |
| Jewels Wood | 110 | 98.2 | 0.027 |
| West Wickham | 252 | 100.0 | Nil |
| Sundridge | 258 | 100.0 | Nil |
| Shortlands | 255 | 100.0 | Nil |
| Honor Oak | 213 | 100.0 | Nil |
| Eynesford | 377 | 100.0 | Nil |
| Bexley | 253 | 100.0 | Nil |