[Report of the Medical Officer of Health for Greenwich Borough] page 207

Greenwich 1967

[Report of the Medical Officer of Health for Greenwich Borough]

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Table: METROPOLITAN WATER BOARD—Water Examination Department

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METROPOLITAN WATER BOARD—Water Examination Department

Description of the Sample	No. of Samples Day of the month	Ammoniacal Nitrogen	Albuminoid Nitrogen	Nitrate Nitrogen	Oxygen abs. from KMnO4 4 hrs. at 27°C.	Hardness (total) CaC0O3	Hardness (non-carbonate) CaCO3	Magnesium as Mg	Sodium as Na	Potassium as K	Chloride as CI	Phosphate aspo4	Silicate as SiO2	Sulphate as so4	Natural Fluoride as F	Surface-active material as Manoxol OT	CO2	Turbidity units	Colour (Burgess units)	pH value	Electrical Conductivity (micro-ohms)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)	(15)	(16)	(17)	(18)	(19)	(20)	(21)	(22)
Thames-derived South of River	156	0.021	0.088	4.2	1.12	272	69	5	226	5.1	30	1.9	9	64	0.30	0.01		0.1	12	7.9	580
Bexley	5	0.006	0.030	5.4	0.10	331	89	4	14 0	2.4	20			56	0.20		34	0.0	1	7.2	600
(a) Crayford No. 1	4	0.014	0 .047	7.9	0.42	430	161	5	22	3.2	34			128	0.30		58	0.1	3	7.1	820
(b) Crayford No. 2	4	0.007	0.031	6.5	0.20	319	87	4	21	4.2	27			58	0.20		41	0.1	1	7.2	650
(c) Crayford No. 3	4	0.007	0.035	6.9	0.30	355	107	5	24	4.3	29			84	0.25		42	0.1	2	7.4	730
Darenth	4	0.009	0.033	4.7	0.10	270	46	2	110	1.9	18			24	0.15		24	0.0	0	7.3	510
Deptford	4	0.013	0.053	6.7	0.08	373	131		26	5.5	42			104	0.30		39	0.0	1	7.1	740
Wansunt	7	0.029	0.036	6.5	0.14	333	92	4	19 0	2.7				67	0.20		37	0.1	2	7.1	650
Wilmington	4	0.008	0.037	7.3	0.15	286	54	3	16.0	2.5	26			26	0.20		33	0.2	1	7.3	590