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
Chislehurst 1962
[Report of the Medical Officer of Health for Chislehurst]
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Footscray County Primary School, Footscray.
Monthly deposit in tons per square mile during 1962.
| Jan. | Feb. | Mar. | Apr. | May | June | July | Aug. | Sept. | Oct. | Nov. | Dec. | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (in rain in inches) | 3.43 | 0.44 | 1.59 | 1.87 | — | — | — | 1.41 | 2.60 | 1.23 | 1.53 | 1.54 |
| pH Value | 5.46 | 6.44 | 6.68 | 7.12 | — | — | — | 7.18 | 7.08 | 6.76 | 5.62 | 4.51 |
| Total undissolved matter | 5.88 | 4.52 | 6.99 | 5.90 | — | — | — | 3.82 | 3.73 | 4.28 | 6.29 | 3.34 |
| Soluble in CS, | 0.12 | 0.19 | 0.09 | 0.09 | — | — | — | 0.09 | 0.05 | 0.06 | 0.07 | 0.20 |
| Ash | 4.10 | 3.34 | 5.27 | 4.22 | — | — | — | 2.58 | 2.23 | 3.18 | 4.35 | 2.26 |
| Other combustible matter | 1.66 | 0.99 | 1.62 | 1.59 | — | — | — | 1.16 | 1.46 | 1.04 | 1.87 | 0.88 |
| Total dissolved matter | 11.95 | 6.31 | 9.63 | 9.97 | — | — | — | 3.82 | 2.89 | 10.67 | 7.70 | 8.00 |
| Ca++ | 1.11 | 1.15 | 1.91 | 2.12 | — | — | — | 0.64 | 0.50 | 2.47 | 1.24 | 1.04 |
| cr | 2.75 | 1.18 | 1.34 | 1.21 | — | — | — | 0.36 | 0.63 | 0.72 | 1.55 | 1.48 |
| SO." | 3.37 | 2.28 | 4.04 | 3.94 | — | — | — | 1.54 | 1.15 | 5.38 | 2.51 | 3.51 |
| Total scdids | 17.83 | 10.83 | 16.62 | 15.87 | — | — | — | 7.64 | 6.62 | 14.95 | 13.99 | 11.34 |
| Sulphur dioxide (milligrams of S04 per day collected by 100 sq. cms. PbO,) | 1.46 | 2.93 | 1.66 | 1.30 | — | — | — | — | — | — | — | — |