London's Pulse: Medical Officer of Health reports 1848-1972
View report page
Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
Islington 1887
[Report of the Medical Officer of Health for Islington, Parish of St Mary]
This page requires JavaScript
15
WATER ANALYSIS.
In the following tables I state the analysis (made monthly) of the New River Company's Water recorded by me during the year.
Analyses of Samples taken from the Works of the Company.
| 1887. | Total Solid Matter. | Chlorine. | Equal to Chloride of Sodium. | Nitrogen as Nitrates. | Nitrogen as Ammonia. | Oxygen required to oxidise Organic Matter. | Degree of Hardness. | Degree after boiling ¼ of an hour. | Organic Carbon. | Organic Nitrogen. |
|---|---|---|---|---|---|---|---|---|---|---|
| January | 21.60 | 1.656 | 2.714 | 0.302 | 0.000 | 0.020 | 14.6 | 5.0 | ... | ... |
| February | 23.40 | 1.656 | 2.714 | 0.281 | 0.000 | 0.012 | 15.7 | 5.2 | ... | ... |
| March | 22.08 | 1.8 | 2.95 | 0.281 | 0.000 | 0.012 | 15.5 | 4.2 | ... | ... |
| April | 22.80 | 1.44 | 2.36 | 0.167 | 0.000 | 0.012 | 14.9 | 3.7 | ... | ... |
| May | 21.96 | 1.44 | 2.36 | 0.208 | 0.000 | 0.012 | 13.2 | 4.5 | ... | ... |
| June | 20.96 | 1.44 | 2.36 | 0.177 | 0.000 | 0.012 | 13.7 | 4.5 | ... | ... |
| July | 19.44 | 1.656 | 2.714 | 0.104 | 0.000 | 0.020 | 15.4 | 2.7 | ... | ... |
| August | 18.02 | 1.368 | 2.242 | 0.146 | 0.000 | 0.012 | 12.8 | 2.9 | ... | ... |
| September | 18.04 | 1.512 | 2.478 | 0.146 | 0.000 | 0.008 | 13.7 | 3.0 | ... | ... |
| October | 21.98 | 1.512 | 2.478 | 0.156 | 0.000 | 0.008 | 16.9 | 6.0 | ... | ... |
| November | 2002 | 1.296 | 2.124 | 0.198 | 0.000 | 0.008 | 15.05 | 3.8 | ... | ... |
| December | 20.04 | 1.2.24 | 2.006 | 0.181 | 0.000 | 0.008 | 15.3 | 3.8 | ... | ... |
| Average | 20.86 | 1.500 | 2.458 | 0.195 | 0.000 | 0.012 | 14.73 | 4.1 | ... | ... |
Analyses of Samples taken from the Mains of the Company.
| 1887. | Total Solid Matter. | Chlorine. | Equal to Chloride of Sodium. | Nitrogen as Nitrates. | Nitrogen as Ammonia. | Oxygen required to oxidise Organic Matter. | Degree of Hardness. | Degree after boiling ¼ of an hour. | Organic Carbon. | Organic Nitrogen. |
|---|---|---|---|---|---|---|---|---|---|---|
| January | ... | 1.692 | 2.773 | 0.338 | 0.000 | 0.028 | 14.9 | ... | 0.071 | 0.016 |
| February | ... | 1.638 | 2.684 | 0.299 | 0.000 | 0.021 | 15.28 | ... | 0.070 | 0.016 |
| March | ... | 1.728 | 2.832 | 0.283 | 0.000 | 0.018 | 15.9 | ... | 0.059 | 0.014 |
| April | ... | 1.584 | 2.596 | 0.232 | 0.000 | 0.017 | 14.9 | ... | 0.053 | 0.016 |
| May | ... | 1.322 | 2.433 | 0.198 | 0.000 | 0.011 | 13.5 | ... | 0.042 | 0.011 |
| June | ... | 1.332 | 2.184 | 0.157 | 0.000 | 0.010 | 14.27 | ... | 0.049 | 0.013 |
| July | ... | 1.44 | 2.36 | 0.109 | 0.000 | 0.015 | 14.14 | ... | 0.062 | 0.014 |
| August | ... | 1.368 | 2.242 | 0.125 | 0.000 | 0.009 | 12.57 | ... | 0.051 | 0.012 |
| September | ... | 1.440 | 2.360 | 0.208 | 0.000 | 0.007 | 12.15 | ... | 0.c44 | 0.014 |
| October | ... | 1.314 | 2.153 | 0.098 | 0.000 | 0.008 | 14.6 | ... | 0.046 | 0.012 |
| November | ... | 1.35 | 2.212 | 0.192 | 0.000 | 0.012 | 14.76 | ... | 0.055 | 0.014 |
| December | ... | 1.296 | 2.124 | 0.253 | 0.000 | 0.016 | 15.19 | ... | 0.067 | 0.014 |
| Average | ... | 1.458 | 2.413 | 0.207 | 0.000 | 0.014 | 14.34 | ... | 0.056 | 0.014 |