[Report of the Medical Officer of Health for Lewisham Borough] page 80

Lewisham 1965

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

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Table: Table 62Bacteriological Results—Yearly Averages, 1965 of water supplied to the Borough of Lewisham

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Table 62

Bacteriological Results—Yearly Averages, 1965 of water supplied to the Borough of Lewisham

Source of supply	BEFORE TREATMENT								AFTER TREATMENT
	Number of samples	Agar plate count per ml.		Coliform count		Escherichia coli count			Agar plate count per. ml.		Coli-form count	E.coli count
	Number of samples	20-24 hours at 37°C	3 days at 22 °C.	Per cent. 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.	Per cent. samples negative in 100 ml.
Bexley	250	0.1	3	99.60	—	99.60	—	256	—	2	100.0	100.0
Darenth	251	0.1	4	100.0	—	100.0	—	256	0.1	3	100.0	100.0
Deptford	253	0.2	21	97.63	—	98.42	—	256	2.0	48	100.0	100.0
Wilmington No. 1	51	0.1	4	96.08	—	96.08	-	218	0.2	7	99.54	100.0
„ No. 2	168	0.7	14	100.0	—	100.0	-	218	0.2	7	99.54	100.0
All Thames-Derived								3,888	7.3	140	99.92	100.0