[Report of the Medical Officer of Health for Bexley] page 70

Bexley 1965

[Report of the Medical Officer of Health for Bexley]

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Table: METROPOLITAN WATER BOARD — Water Examination Department BACTERIOLOGICAL RESULTS - YEARLY AVERAGES, FOR 1969 Water supplied to the London Borough of Bexley

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METROPOLITAN WATER BOARD — Water Examination Department BACTERIOLOGICAL RESULTS - YEARLY AVERAGES, FOR 1969 Water supplied to the London Borough of Bexley

Source of supply	BEFORE TREATMENT							AFTER TREATMENT
	Number of samples	Agar plate count per ml.		Coliform count		Escherichia coli count		Number of samples	Agar plate count per ml.		Coliform cou nt	E. coli count
	Number of samples	20-24 hou rs at	3 days at 22°C.	Per cent, samples negative in 100 ml.	Cou nt per 100 ml.	Per cent, samples negative in 100 ml.	Count per 100 ml.	Number of samples	20-24 hours at	3 days at 22°C.	Per cent, samples negative in 100 ml.	Per cent, samples negative in 100 ml.
River Thames—Derived	8,196	66.5	—	39.79	19.0	53.97	7.0	3,698	12.9	—	99.89	100.0
Bexley	249	0.2	4	99.20	-	100.0	-	253	15.6	97	100.0	100.0
(a) Crayford No.1	146	0.1	5	99.32	-	100.0	-	253	20.9	139	100.0	100.0
(b) Crayford No.2	145	0.1	134	99.31	-	100.0	-
(c) Crayford No.3	113	0.0	15	100.0	-	100.0	-
Darenth	250	0.1	13	100.0	-	100.0	-	251	0.0	3	100.0	100.0
(a) Eynsford Well	169	0.2	30	99.41	-	100.0	-	252	0.0	9	99.60	99.60
(b) Eynsford Borehole	174	0.1	4	99.43	-	99.43	-	252	0.0	9	99.60	99.60
(a) Horton Kirby No.1	196	0.2	73	91.84	0.4	94.90	0.3	249	0.1	8	100.0	100.0
(b) Horton Kirby No.2	199	0.1	15	94.47	0.2	96.48	0.1	249	0.1	8	100.0	100.0
(a) Wansunt No.1	216	2.3	96	99.07	-	100.0	-	252	0.1	49	100.0	100.0
(b) Wansunt No.2	234	0.6	48	100.0	-	100.0	-	252	0.1	49	100.0	100.0
Wilmington	238	0.5	46	98.74	-	99.58	-	242	0.1	3	100.0	100.0