[Report of the Medical Officer of Health for Bromley] page 144

Bromley 1967

[Report of the Medical Officer of Health for Bromley]

This page requires JavaScript

Download table as:

BACTERIOLOGICAL RESULTS — YEARLY AVERAGES, 1967 OF WATER SUPPLIED TO THE LONDON BOROUGH OF BROMLEY

Source of supply	Number of samples	BEFORE TREATMENT						Number of samples	AFTER TREATMENT
		Agar plate count per ml.		Coliform count		Escherichia coli count			Agar plate count per ml.		Coliform count	E. coli count
		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.		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.
All Thames-derived								3,578	12.2		99.75	99.97
Eynsford No. 1(a)	132	0.3	9	100.0	—	100.0	-	247	0.0	1	100.1	100.0
Eynsford No. 2(b)	188	0.0	5	100.0	—	100.0	-	247	0.0	1	100.1	100.0
Horton Kirby No. 1(a)	180	0.8	25	91.67	0.8	93.33	0.5	242	0.1	203	100.0	100.0
Horton Kirby No. 2(b)	215	0.1	5	93.49	0.4	04.42	0.3	242	0.1	203	100.0	100.0
Jewels Wood	45	0.8	61	100.0	-	100.0	-	45	2.2	19	100.0	100.0
Lullingstone No. 1(a)	146	0.0	1	100.0	—	100.0	-	254	0.1	6	100.0	100.0
Lullingstone No. 2(b)	153	0.0	13	100.0	—	100.0	-	254	0.1	6	100.0	100.0
North Orpington No. 1(a)	172	3.2	52	30.23	11.0	41.86	6.6	255	0.6	7	99.22	99.61
North Orpington No. 2(b)	231	1.7	27	37.66	4.2	49.35	2.3	255	0.6	7	99.22	99.61
Orpington	249	0.0	166	99.20	-	99.60	-	254	0.0	6	100.0	100.0
Shortlands No. 1(a)	168	0.0	10	100.0	-	100.0	—	219	0.0	7	100.0	100.0
Shortlands No. 2(b)	190	0.2	12	100.0	-	100.0	—
Shortlands No. 3(c)	65	0.0	1	100.0	-	100.0	—
Sundridge No. 1(a)	59	0.0	0	100.0	—	100.0	—	255	0.0	1	100.0	100.0
Sundridge No. 2(b)	60	0.0	3	100.0	—	100.0	—
Sundridge No. 3(c)	104	0.0	205	100.0	—	100.0	—
Sundridge No. 4(d)	103	0.0	0	100.0	—	100.0	—
West Wickham	209	0.0	404	97.61	-	98.56	-	212	0.0	4	100.0	100.0