Report on the sanitary condition of the Hackney District for the year 1897 page 37

Hackney 1897

Report on the sanitary condition of the Hackney District for the year 1897

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Table: Table VII.—Analyses of River Lea Water, made during the year 1897, by Mr. Leo Taylor, F.I.C., Public Analyst.

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Table VII.—Analyses of River Lea Water, made during the year 1897, by Mr. Leo Taylor, F.I.C., Public Analyst.

Date.	Where Taken.	Total solid residue.	Saline ammonia.	Organic Ammonia.	Oxygen requir'd to oxidise the organic matter	Chr'line	Nitra??? e and Nitrites	remarks.
June 11th,	River Lea opposite ^"Jolly Anglers."	38.5	.033	.025	.157	1.4	Distinct traces	There was a considerable amount of suspended matter in this water composed partly of decomposing vegetable matter, and to this was due the slight odour given off by the sample. The sample when viewed in a white basin one inch deep, was slightly yellow in tint. The details of the analysis point to organic contamination from decayed vegetable matter.
June 11th,	River Lea, bottom of of Spring Hill.	39.2	.041	.029	.159	1.5	Distinct	Same as above, although the figures in this sample are slightly higher.
June 24th,	River Lea, near "White Hart."	39.2	1.510	.042	.794	3.1	Traces	Odour very foul; considerable suspended matter. Possesses all the characteristics of dilute sewage.
June 24th,	River Lea, near "White House."	31.64	.007	.026	.192	1.8	Slight traces	The organic matter in this water is higher than it should be; a small quantity of sewage matter is evidently finding its way into the stream above this point.