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 1886
[Report of the Medical Officer of Health for Islington, Parish of St Mary]
This page requires JavaScript
14
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.
| 1886. | 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 | 23.06 | 1.512 | 2478 | 0.292 | o.ooo | 0.072 | 14.28 | 5.2 | ... | ... |
| February | 23.00 | 1.656 | 2.714 | 0.261 | o.ooo | 0.032 | 14.9 | 2.9 | .. | ... |
| March | 23.72 | 1.656 | 2.714 | 0.125 | 0.000 | 0.008 | 14.8 | 3.9 | ... | ... |
| April | 22.00 | 1.44 | 2.36 | 0.146 | o.ooo | 0.024 | 13.6 | 4.39 | ||
| May | 21.20 | 1.728 | 2.832 | 0.198 | o.ooo | 0.016 | 13.7 | 4.2 | ||
| June | 20.92 | 1.80 | 2.95 | 0.167 | o.ooo | 0.012 | 14.7 | 4.3 | ||
| July | 21.72 | 1.512 | 2.478 | 0.177 | 0.000 | 0,.012 | 145.9 | 3.9 | ||
| August | 20.12 | 1.512 | 2.478 | 0.177 | o.ooo | 0.012 | 15.3 | 39 | ||
| September | 21.82 | 1.512 | 2.478 | 015 | o.ooo | 0.008 | 14.9 | 4.6 | ||
| October | 21.00 | 1.44 | 2.36 | 0.46 | o.0oo | 0.008 | 13.6 | 4.6 | ||
| November | 20.12 | 1.368 | 2.242 | 0.229 | o-ooo | 0.012 | 15.05 | 5.2 | ||
| December | 25.32 | 1.512 | 2.478 | 0.302 | o-ooo | 0.012 | 15.2 | 3.8 | ||
| Average | 22.00 | 1.554 | 2.548 | 0.193 | o.ooo | 0.019 | 14.6 | 4.3 |
Analyses of Samples taken from the Mains of the Company.
| 1886. | Total Solid Matter. | Chlorine. | Equal to Chloride of Sodium. | Nitrogen as Nitrates. | Nitrogen as Ammonia. | Oxygen required to oxidise Organic Matter. | Degree of Harjness. | Decree after boiling ¼ of an hour. | Organic Carbon. | Organic Nitrogen. |
|---|---|---|---|---|---|---|---|---|---|---|
| January | ... | 1.44 | 2.36 | 0.297 | o.ooo | 0.029 | 14.32 | ... | 0.075 | 0.016 |
| February | ... | 1.416 | 2.32 | 0.253 | 0.000 | 0.022 | 14.8 | ... | 0.069 | 0.016 |
| March | ... | 1.368 | 2.242 | 0.203 | 0.000 | o.o11 | 15.8 | ... | 0.065 | 0.016 |
| April | ... | 1.501 | 2.419 | 0.151 | o.ooo | 0.017 | 14.38 | ... | 0.066 | 0.015 |
| May | ... | 1.530 | 2.507 | 0.188 | o.ooo | 0.016 | 14.4 | ... | 0.057 | 0.014 |
| June | ... | 1.56 | 2.556 | 0.163 | 0.000 | 0.014 | 14.8 | ... | 0.060 | 0.015 |
| July | ... | 1.44 | 2.36 | 0.151 | o.ooo | 0.012 | 15.24 | ... | 0.050 | 0.015 |
| August | ... | 1.476 | 2.419 | 0.164 | 0.000 | 0.011 | 15.14 | ... | 0.056 | 0.014 |
| September | ... | 1.464 | 2.399 | 0.159 | 0.OOO | 0.009 | 13.82 | ... | 0.049 | 0.013 |
| October | ... | 1.476 | 2.419 | 0.153 | o.ooo | o.010 | 13.4 | ... | 0.062 | 0.012 |
| November | ... | 1.458 | 2.389 | 0.210 | 0.000 | 0.018 | 14.7 | ... | 0.064 | 0.014 |
| December | ... | 1.512 | 2.478 | 0.327 | o.ooo | 0.025 | 15.7 | ... | 0.068 | 0.015 |
| Average | ... | 1.470 | 2.405 | 0.201 | o.ooo | 0.016 | 14.7 | ... | 0.061 | 0.014 |