[Report of the Medical Officer of Health for Tottenham] page 13

Tottenham 1959

[Report of the Medical Officer of Health for Tottenham]

This page requires JavaScript

Download table as:

AVERAGE RESULTS OF THE CHEMICAL AND BACTERIOLOGICAL EXAMINATION OF THE WATER SUPPLIED

TO THE BOROUGH OF TOTTENHAM FOR THE YEAR 1959

(Milligrams per litre (unless otherside stated))

Description of the Sample	No. of Samples	Amnonia Nitrogen	Album, inoid Nitrogen	Oxidised Nitrogen (Nitrate)	Chlorides as CI	Oxygen abs. from Permanganate 4 hrs. at 27°C-	Turbidity in terms of Silica	Colour m.m. brown 2ft. Tube Burgess s Tintometer	Hardness (Total)	Hardness (ncn-car-bonate)	PH Value	Phosphate as P0₄	Silicate as SI0₂	Sulphate as SO₄	Fluoride as F	Magnesium as Mg.	Pot-asium K	Electrical Conductivity (gemmhos)
New River water fil tered at Homsey and/or Stoke Newington works	104	0.018	0.050	5.4	32	0.50	0.1	5	298	70	78	0.55	12	59	0.2	50		625
River Thames derived filtered water	386	0.030	0 074	3.6	28	1.04	0.4	9	254	56	7 8	0 90	9	54	0.2	4.0		525
Park well	3	160	,034	0.1	21	0.20	1.8	10	278	74	7 4						6 0	525

Download table as:

BACTERIOLOGICAL RESULTS - YEARLY AVERAGES, 1959

	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 count	Escherichia 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.
New River water filtered at Homsey works and/or Stoke Newington works								514	4.8		99.61	100.0
River Thames derived filtered water								3344	9.8		99.46	99.97
Park well	145	0.5	5	80,69	0.6	98.62	-	147	0.2	2	100 0	100.0