Fiftieth annual report on the health and sanitary condition of the Metropolitan Borough of Islington page 284

Islington 1905

Fiftieth annual report on the health and sanitary condition of the Metropolitan Borough of Islington

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1905]
284

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Table W.

Showing theAnalyses(made monthly) of the New River Company'sWaterSupplyrecorded during the Year.

Analyses of Samples taken from the Works of the Company.

1905.	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 J of an hour.	Organic Carbon.	Organic Nitrogen.
January	22.30	1.368	2.242	0.219	0.00	0.000	16.52	3.89	..	..
February	21.10	1.368	2.242	0.240	„	0.003	16.95	3.70	..	..
March	21.20	1.368	2.242	0.229	„	0.003	16.95	4.20	..	..
April	21.80	1.440	2.360	0.156	„	0.007	15.05	3.80	..	..
May	18.40	1.440	2.360	0.177	„	0.007	14.00	3.50	..	..
June	19.10	1.296	2.124	0.177	„	0.016	15.26	3.50	..	..
July	19.00	1.296	2.124	0.156	„	0.028	14.21	3.40	..	..
August	18.60	1.368	2.242	0.146	„	0.012	14.42	3.40	..	..
September	20.40	1.368	2.242	0.146	„	0.011	15.05	3.50	..	..
October	19.90	1.368	2.242	0.146	„	0.008	15.26	3.10	..	..
November	Returns not received.
December	Returns not received.
Average	20.18	1.368	2.242	0.179	0.000	0.009	15.37	3.60	..	..

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Analyses of Samples taken from the Mains of the Company.

1905.	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 £ of an hour.	Organic Carbon.	Organic Nitrogen.
January	..	1.416	2.321	0.240	0.000	0.007	17.02	..	0.039	0.006
February	..	1.416	2.32I	0.236	„	0.007	16.66	..	0.051	0.006
March	..	1.458	2.389	0.211	„	0.016	16.10	..	0.069	0.007
April	..	1.440	2.360	0.184	„	0.014	15.54	..	0.083	0.009
May	..	1.416	2.321	0.191	„	0.006	14.70	..	0.055	0.007
June	..	1.392	2.281	0.170	„	0.009	15.40	..	0.058	0.006
July	..	1.368	2.242	0.I74	„	0.012	15.05	..	0.055	0.006
August	..	1.368	2.242	0.156	„	0.007	15.47	..	0.029	0.005
September	..	1.392	2.28l	0.146	„	0.010	15.19	..	0.061	0.007
October	..	1.464	2.399	0.156	„	0.007	15.75	..	0.043	0.005
November	Returns not received.
December	Returns not received.
Average	..	1.413	2.316	0.186	0.000	0.009	15.69	..	0.054	0.006