[Report 1966] / Medical Officer of Health, Sanitary / Public Health Inspector, and School Medical Officer of Health, Peterborough City.

  • Peterborough (England). City Council. nr 94004832.
Date:
1966
Catalogue details

Licence: Attribution 4.0 International (CC BY 4.0)

Credit: [Report 1966] / Medical Officer of Health, Sanitary / Public Health Inspector, and School Medical Officer of Health, Peterborough City. Source: Wellcome Collection.

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    Mineral Analysis :— Dissolved Oxygen ... Parts per Etton 3.5 million :— Wilsthorpe 4.6 Temperature °C. ... 17 17 Free Carbon Dioxide ... 11.0 8.3 Calcium as Ca ... 96.0 144.0 Magnesium as Mg ... ... 10.9 9.6 Sodium as Na ... 59.5 17.4 Carbonates as CO3 ... ... 150.0 138.0 Sulphates as SO4 ... 97.0 139.4 Chlorides as Cl • • • • • • ... 37.2 28.4 Nitrates as NO3 0.9 14.6 Silicates as Si03 7.6 7.6 Fluorides as F 0.10 0.04 Iron Oxide as Fe203 • • • * • • Nil Nil Probable composition per million parts :— Calcium Carbonate, CaC03 ... 240.0 230.0 Calcium Sulphate, CaS04 ... — 176.8 Magnesium Carbonate, MgC03 8.4 — Magnesium Sulphate, MgS04 ... 42.1 18.3 Magnesium Chloride, MgCF — 23.1 Sodium Sulphate, Na2S04 ... 93.8 — Sodium Chloride, NaCl ... 61.3 18.5 Sodium Nitrate, NaN03 ... 1.2 20.0 Sodium Silicate, Na2Si03 ... ... 12.2 12.2 Sodium Fluoride, NaF 0.2 0.09 Iron Oxide, Fe203 ... • • • , , • ... Nil Nil Observations :— These waters both fell into class 1 (“excellent”) of the Ministry of Health’s classification of piped water supplies. The chlorine dosage of 0.3 part per million for Etton. and 0.4 part per million for Wilsthorpe should be an ample safeguard of the bacterial purity of these waters passing into public supply.