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7
Results in
Determinations. Grains. per Gallon Parts. per 100,000
Total Solid Matter dried at 180° C 33.6 48.0
Chlorine 2.8 4.0
Equivalent to Chlorides (60 % Cl.) 4.7 6.7
Nitric Nitrogen 0.23 0.33
Equivalent to Nitrates (17 % N) 1.38 l.98
Nitrites Absent
Hardness : Permanent 4 (leg.; Temporary 2.5 deg.;
Total 65 9.8
Lead, Copper, Zinc, Iron Absent
Free Ammonia 0.0006 0.0008
Organic Ammonia 0.0022 0.0032
Oxygen absorbed at 98° in 3 hours 0.0238 0.0340
The water is evidently derived from a deep source as it
resembles the waters from deep Essex wells.
It is of great organic purity, and there is nothing to indicate
any contamination.
The trace of fine sand and vegetable debris is doubtless
derived from the mains.
December 10th, 1908. John C. Thresh."
Bacteriological Examination.
Report on the examination of two samples of water from
Barking Urban District Council, by John C. Thresh.
No. 1. From main at 24, King Edward Road.
No. 2. From main at 69, Morley Road.