[Report of the Medical Officer of Health for London, City of] page 25

City of London 1869

[Report of the Medical Officer of Health for London, City of]

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Table: Average Chemical Composition of the Metropolitan Waters for the Year1870.

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Average Chemical Composition of the Metropolitan Waters for the Year1870.

Names of Water Companies, &c.	Total Solid Matter per gallon.	Common Salt.	Oxygen* required by Organic Matter, &c.	Nitrogen.		Hardness.
Names of Water Companies, &c.	Total Solid Matter per gallon.	Common Salt.	Oxygen* required by Organic Matter, &c.	As Nitrates, &c.	As Ammonia.	Before Boiling	After ■Boiling
Thames Water Companies.	Grains.	Grains.	Grains	Grains.	Grains.	Degrees.	Degree*.
Grand Junction	18.53	1.68	0.078	0.076	0.002	14.2	3.7
West Middlesex	18.43	1.71	0.053	0.095	0.001	14.0	3.7
Southwark &Vaux-
hall	18.37	1.73	0.077	0.073	0.003	14.2	3.9
Chelsea	18.67	1.69	0.085	0.080	0.002	14.3	3.8
Lambeth	19.04	1.79	0.071	0.081	0.002	14.3	3.9
Other Companies.
Kent	27.31	2.38	0 .011	0.142	0.000	20.0	5.2
New River	18.31	1.61	0.024	0.086	0 .000	14.0	3.5
East London	18.62	1.77	0.041	0.093	0 .001	14.1	3.8

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England—Birth-rate, 35.26; Death-rate, 22.68.
In the former table, the soft water districts gave
a death-rate of 28.1 per 1,000 of the population,
against an average of only 23.7 in the hard water;
and in the last table it stands as 28.04 per 1,000, to
22.00. In point of fact, after making every

London's Pulse: Medical Officer of Health reports 1848-1972

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City of London 1869

Table: Average Chemical Composition of the Metropolitan Waters for the Year1870.

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