[Report of the Medical Officer of Health for Bromley] page 120

Bromley 1965

[Report of the Medical Officer of Health for Bromley]

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Table: AVERAGE RESULTS OF THE CHEMICAL EXAMINATION OF WATER SUPPLIED TO THE LONDON BOROUGH OF BROMLEYMilligrammes per litre (unless otherwise stated)

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AVERAGE RESULTS OF THE CHEMICAL EXAMINATION OF WATER SUPPLIED TO THE LONDON BOROUGH OF BROMLEY

Milligrammes per litre (unless otherwise stated)

Description of the Sample	No. of Samples Day of the month	Ammoniacal Nitrogen	Albuminoid Nitrogen	Nitrate Nitrogen	Oxygen abs. from KMnO₄4 hrs. at 27°C.	Hardness (total) CaCO₃	Hardness (non-carbonate) CaCO₃	Magnesium as Mg	Chloride as CI	Phosphate as P0₄	Silicate as SiO₂	Sulphate as SO4	Natural Fluoride as F	Surface-active material as Manoxol OT	Turbidity units	Colour (Burgess units)	pH value	Electrical Conductivity (micromhos)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)	(15)	(16)	(17)	(18)	(19)
All Thames-derived	363	0.049	0.091	4.3	1.20	264	68	4	41	19	10	64	0.25	0.10	0.1	15	7.6	560
Eynsford	8	0.003	0.023	3.6	0.12	258	24		17				0.2		Nil	Nil	7.2	460
Horton Kirby	8	0.008	0.026	4.5	0.12	272	44		21				0.15		Nil	Nil	7.2	480
Jewels Wood	4	0.008	0.022	1.8	0.10	234	12		14						0.1	2	1.2	410
Lullingstone	8	0.007	0.021	3.1	0.08	250	24		15				0.15		Nil	Nil	7.2	440
North Orpington	8	0.010	0.029	3.8	0.08	266	22		16				0.1		0.1	Nil	7.1	470
Orpington	4	0.005	0.031	5.6	0.10	280	32		16				0.1		Nil	Nil	7.1	500
Shortlands	10	0.025	0.026	4.7	0.10	286	66		19				0.15		Nil	1	7.1	510
Sundridge	12	0.011	0.022	3.0	0.08	216	46		20				0.15		Nil	1	7.4	400
West Wickham	6	0.015	0.023	4.1	0.04	262	24		15				0.1		0.1	1	7.1	460