Forty-fourth annual report on the health and sanitary condition of the Parish of St. Mary, Islington page -

Islington 1899

Forty-fourth annual report on the health and sanitary condition of the Parish of St. Mary, Islington

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WATER ANALYSIS.
In the following tables I state the analyses (made monthly) of
the New River Company's Water recorded during the year.

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Analyses of Samples taken from the Works of the Company.

1899.	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 boliing ¼ of an hour.	Organic Carbon.	Organic Nitrogen.
January	25.00	1,368	2.242	0.222	0.000	0.030	17.37	5.10	..	..
February	23.20	1,368	2,242	0.226	„	0.026	17.16	4.50	..	..
March	21.80	1,368	2,242	0.205	„	0.023	16.73	4.50	..	..
April	24.60	1,368	2,242	0.132	„	0.011	15.68	4.10	..	..
May	24.40	1.440	2.360	0.125	„	0.019	14.42	4.40	..	..
June	20.40	1.440	2.360	0.118	„	0.015	14.42	3.50	..	..
July	21.40	1.368	2.242	0.135	„	0.019	15.05	2.91	..	..
August	19.80	1.440	2.360	0.146	„	0.019	14.00	3.00	..	..
September	19.00	1.440	2.360	0.146	„	0.020	12.60	2.36	••	..
October	25.60	1.440	2.360	0.135	„	0.015	16.95	3.00	..	..
November	22.10	1.368	2.242	0.167	„	0.016	17.16	3.99	..	..
December	25.80	1.368	2.242	0.177	„	0.003	17.79	3.70	..	..
Average	22.76	1.396	2.291	0.162	0.000	0.018	15.78	3.75	..	..

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Analyses of Samples taken from the Mains of the Company.

1899.	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	..	1.404	2.301	0.240	0.000	0.035	16.79	..	0.106	0.017
February	..	1.416	2.321	0.268	„	0.026	16.38	..	0.097	0.015
March	..	1.440	2,360	0.214	„	0.013	16.21	..	0.065	0.013
April	..	1.440	2,360	0.184	„	0.008	14.70	..	0.049	0.009
May	..	1.422	2.330	0.203	„	0.012	14.73	..	0.044	0.009
June	..	1.422	2.330	0.169	„	0.015	15.10	..	0.046	0.007
July	..	1.422	2.330	0.151	„	0.014	14.79	..	0.026	0.006
August	..	1.464	2.399	0.167	„	0.010	15.47	..	0.031	0.006
September	..	1.464	2.399	0.160	„	0.012	16.24	..	0.031	0.005
October	..	1,422	2.330	0.151	„	0.009	16.47	..	0.028	0.006
November	..	1.368	2.242	0.190	„	0.022	16.94	..	0.071	0.012
December	..	1,392	2.281	0.212	„	0.006	17.65	..	0.042	0.007
Average	..	1.423	2.332	0.192	0.000	0.015	15.95	..	0.053	0.009