[Report of the Medical Officer of Health for Lewisham Borough] page 83

Lewisham 1967

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

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Table: Table 72Bacteriological Results—Yearly Averages, 1967 of water supplied to the Borough of Lewisham

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Table 72

Bacteriological Results—Yearly Averages, 1967 of water supplied to the Borough of Lewisham

	BEFORE TREATMENT							AFTER TREATMENT
		Agar plate count per ml.		Coliform count		Escherichia coli count			Agar plate count per. ml.		Coliform count	E. coli count
Source of supply	Number of samples	20-24 hours at 37°C	3 days at 22°C.	Percent. samples negative in 100 ml.	Count per 100 ml.	Per cent. samples negative in 100 ml.	Count per 100 ml.	Number of samples	20-24 hours at 37°C.	3 days at 22°C.	Per cent. samples negative in 100 ml.	Percent. samples negative in 100 ml.
All Thames-derived	-	-	-	-	-	-	-	3,578	12.2	—	99.75	99.97
Deptford	250	0.3	32	97.60	0.2	98.80	—	254	1.6	143	99.61	100.0
Wilmington	250	1.5	4	98.80	—	100.0	—	255	0.2	4	99.61	100.0
Darenth	247	0.0	7	99.19	—	99.60	—	253	0.2	1	100.0	100.0
Bexley	249	0.1	4	96.39	0.3	97.59	0.2	265	0.0	39	100.0	100.0