[Report of the Medical Officer of Health for Wanstead and Woodford] page 23

Wanstead and Woodford 1949

[Report of the Medical Officer of Health for Wanstead and Woodford]

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Number	Local or outside manufacture	No. of colonies per ml. on Agar at 37deg. C. in 48 hrs.	Coliform test. Positive in 1/100 ml. in 3 tubes	Bact. coli. Present in 1/100 ml. in 3 tubes	Remarks by Public Health Laboratories	METHYLENE BLUE REACTION
Number	Local or outside manufacture	No. of colonies per ml. on Agar at 37deg. C. in 48 hrs.	Coliform test. Positive in 1/100 ml. in 3 tubes	Bact. coli. Present in 1/100 ml. in 3 tubes	Remarks by Public Health Laboratories	After preincubation decolourised in (hours)	After preincubation not decolourised in (hours)	Ministry's Provisional Grading
1.	Outside	32,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
2.	Outside	500	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
3.	Outside	1,900	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
4.	Outside	5,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
5.	Outside	40,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	3½	-	II.
6.	Local	16,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
7.	Outside	300	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
8.	Outside	400	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
9.	Outside	500	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
10.	Outside	1,400	0 in 3	0 in 3	Very satisfactory standard of bacterial puritv.	-	4½	I.
11.	Outside	11 mill.	3 in 3	0 in 3	Unsatisfactory - contains excessive numbers of bacteria.	1	-	III.
12.	Outside	4,500	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
13.	Outside	18,000	3 in 3	0 in 3	Fair standard of bacterial purity.	1½	-	III.
14.	Outside	600	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
15.	Local	7,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
16.	Outside	1,200	0 in 3	0 in 3	Very satisfactory standard of bacterial purity.	-	4½	I.
17.	Outside	500	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
18.	Outside	3,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
'9.	Outside	135,000	3 in 3	0 in 3	Barely passable standard of bacterial purity— contains more bacteria than is desirable.	0	-	IV.
20.	Outside	800	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
21.	Outside	800	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
22.	Outside	1 mill.	2 in 3	0 in 3	Unsatisfactory — contains excessive numbers of bacteria.	0	-	IV.
23.	Outside	4,600	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
24.	Local	1 mill.	2 in 3	1 in 3	Very unsatisfactory sample. Contains excessive numbers of bacteria, including small numbers of bacteria of excremental origin.	0	-	IV.
25.	Outside	70,000	3 in 3	0 in 3	Passable standard of bacterial purity but reduction of content of coliform organisms should be attainable.	1	-	III.
26.	Outside	13,000	3 in 3	0 in 3	Fair standard of bacterial purity, but reduction of content of coliform organisms should be attainable.	4	-	II.
27.	Outside	600,000	3 in 3	0 in 3	Sample contains excessive numbers of bacteria and is therefore unsatisfactory.	½	-	III.
28.	Outside	60,000	3 in 3	0 in 3	Sample is of a passable standard of bacterial purity, but reduction of'the content of coliform organisms should be attainable.	3	-	II.
29.	Local	500	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	1.
30.	Outside	600	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
31.	Local	900	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
32.	Local	1,800	0 in 3	0 in 3	Very satisfactory standard of bacterial purity.	-	4½	I.
33.	Local	100,000	3 in 3	0 in 3	Sample of only passable standard of bacterial purity and much improvement should be attainable.	½	-	III.
34.	Outside	300,000	3 in 3	0 in 3	Sample contains excessive numbers of bacteria and is therefore unsatisfactory.	1½	-	III.
35.	Outside	45,000	3 in 3	0 in 3	Fair standard of bacterial purity, but reduction of the- content of coliform organisms should be attainable.	2	-	III.
	.. Outside	23,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
37.	Outside	J mill.	1 in 3	0 in 3	Sample contains e-jessfcxve numbers of bacteria and is ti Kerefore unsatisfactory.	1	-	III.
38	Outside	800	0 in 3	0 in 3	Excellent standard of bacterid purity.	-	4½	I.
^y).	Outside	900	0 in 3	0 in 3	Excellent standard of ->acteri l purity.	-	4½	I.
%	Outside	8,000	0 in 3	0 in 3	Satisfactory standard < J bacvrial purity.	-	4½	I.
4i.	Outside	100,000	0 in 3	0 in 3	Passable standard of ac ^al purity and improvement shouK " attainable.	2	-	III.
/ ⁴²'	Outside	72,000	3 in 3	0 in 3	Passable standard of b. cerial purity and improvement should be attainable.	3	-	II.
43.	Local	2,000	0 in 3	0 in 3	Very satisfactory standard of bacterial purity.	-	4½	I.
44.	Outside	360,000	3 in 3	0 in 3	Sample contains excessive numbers of bacteria and is therefore unsatisfactory.	2	-	III.
45.	Outside	4,800	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
46.	Outside	6,800	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
47.	Outside	500	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
48.	Outside	68,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	2½	-	II.
49.	Outside	100,000	3 in 3	2 in 3	Sample contains more bacteria than is desirable, including organisms of faecal origin. It is therefore unsatisfactory.	2½	-	II.
50.	Outside	12,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
51.	Outside	9,200	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
52.	Outside	6,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
53.	Outside	3,200	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
54.	Outside	5,800	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
55.	Outside	70,000	0 in 3	0 in 3	Fair standard of bacterial purity.	-	4½	I.
56.	Outside	800	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
57.	Outside	1,200	1 in 3	0 in 3	Satisfactory standard of bacterial purity.	4	-	II.
58.	Outside	40,000	3 in 3	0 in 3	Fair standard of bacterial purity, but reduction of the content of coliform organisms is desirable.	1	-	III.
59.	Outside	50,000	3 in 3	0 in 3	Fair standard of bacterial purity, but reduction of the content of coliform organisms is desirable.	-	4½	I.
60.	Outside	1,200	0 in 3	0 in 3	Very satisfactory standard of bacterial purity.	-	4½	I.
. 61.	Outside	4,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
62.	Outside	30,000	3 in 3	0 in 3	Passable standard of bacterial purity, but the content of coliform organisms should be less.	3	-	II.
63.	Outside	120,000	3 in 3	0 in 3	Barely passable standard, and marked improvement should be attained.	½	-	III.
64.	Outside	3,000	0 in 3	0 in 3	High standard of bacterial purity.	4	-	II.
65.	Outside	300	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
66.	Outside	1,200	3 in 3	0 in 3	Passable standard of bacterial purity, but the content of coliform organisms should be less.	3½	-	II.
67.	Outside	120,000	3 in 3	3 in 3	Sample unsatisfactory as it contains large numbers of bacteria including organisms of excremental origin.	1	-	III.
68.	Outside	1,100	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
69.	Outside	22,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	3½	-	II.
70.	Outside	200	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
71.	Outside	700	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
72.	Outside	150,000	3 in 3	0 in 3	Sample contains more bacteria than desirable and is therefore of a barely passable standard of bacterial purity.	0	-	IV.
73.	Outside	80,000	3 in 3	0 in 3	Passable standard of bacterial purity, but improvement should be attainable.	1½	-	III.
74.	Outside	70,000	3 in 3	0 in 3	Fair standard of bacterial purity, but a reduction of the content of coliform organisms is desirable.	-	4½	I.
75.	Outside	130,000	3 in 3	0 in 3	Passable standard of bacterial purity.	1½	-	III.
76.	Outside	3,000	1 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
77.	Outside	40,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	3½	-	II.
78.	Outside	800	1 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
79.	Outside	11,000	3 in 3	0 in 3	Fair standard of bacterial purity, but the content of coliform organisms should be less.	4	-	II.
80.	Outside	13,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
81.	Outside	4,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4-½	I.
82.	Outside	400	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
83.	Outside	2,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
84.	Local	20,000	3 in 3	0 in 3	Fair standard of bacterial purity, but the content of coliform organisms should be less.	2	-	III.
85.	Local	i mill.	3 in 3	3 in 3	Very unsatisfactory. Contains excessive numbers of bacteria including organisms of excremental origin in considerable numbers.	0	-	IV.
86.	Outside	30,000	3 in 3	0 in 3	Fair standard of bacterial purity, but the content of coliform organisms should be less.	4	-	II.
87.	Outside	23,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
88.	Outside	38,000	3 in 3	0 in 3	Fair standard of bacterial purity, but the content of coliform organisms should be reduced.	-	4½	I.
89.	Outside	18,000	0 in 3	0 in 3	Satisfactory-standard of bacterial purity.	-	4½	I.
90.	Outside	100,000	3 in 3	0 in 3	Sample contains more bacteria than is desirable and is therefore only of a passable standard of bacterial purity.	1	-	III.
91.	Outside	10,000	3 in 3	0 in 3	Fair standard of bacterial purity. Content of coliform organisms should be less.	-	2½	II.
92.	Outside	18,000	3 in 3	0 in 3	Fair standard of bacterial purity, but the content of coliform organisms should be less.	-	2½	II.
93.	Outside	42,000	3 in 3	0 in 3	Fair standard of bacterial purity, but the content of coliform organisms should be less.	-	3½	II.
94.	Outside	5,800	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
95.	Outside	12,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
96.	Outside	65,000	3 in 3	0 in 3	Fair standard of bacterial purity, but the content of coliform organisms should be less.	-	l½	III.
97.	Outside	70,000	3 in 3	0 in 3	Fair standard of bacterial purity—improvement should be expected.	2		III.
98.	Local	12,000	3 in 3	0 in 3	Fair standard of bacterial purity, the content of coliform organisms should be less .	2½	-	II.
99.	Local	132,000	3 in 3	0 in 3	Contains more bacteria than is desirable— much improvement should be attained.	0	-	IV.
100.	Outside	4,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
101.	Outside	8,200	3 in 3	0 in 3	Fair standard of bacterial purity, but content of coliform organisms should be reduced.	3	-	II.
102.	Outside	700	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
103.	Outside	200	0 in 3	0 in 3	Excellent standard of bacterial purity.	-	4½	I.
104.	Outside	48,000	3 in 3	0 in 3	Fair standard of bacterial purity but reduction of coliform organisms is desirable.	2	-	III.
105.	Outside	78,000	3 in 3	1 in 3	Sample cannot be considered satisfactory as organisms of excremental origin are present.	½	-	III.
106.	Local	68,000	3 in 3	0 in 3	Fair standard of bacterial purity, but content of coliform organisms should be less.	2	-	III.
107.	Outside	13,000	3 in 3	0 in 3	Fair standard of bacterial purity, but reduction of the content of coliform organisms is desirable.	l½	-	III.
108.	Outside	6,700	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	41	I.
109.	Local	5,000	3 in 3	1 in 3	Unsatisfactory. Contains organisms of excremental origin in small numbers.	4		II.
110.	Outside	78,000	3 in 3	0 in 3	Fair standard of bacterial purity, but improvement should be attainable.	3		II.
111. 112.	Outside Outside	130,000 700	3 in 3 0 in 3	0 in 3 0 in 3	Passable standard only and much improvement should be attained. Excellent standard of bacterial purity.	0	4½	IV. I.
113.	Outside	15,000	3 in 3	0 in 3	Fair standard of bacterial purity, but content of coliform organisms should be reduced.	2	—-	III.
114.	Outside	8,000	3 in 3	0 in 3	Fairly satisfactory standing of bacterial purity but a reduction in the content of coliform organisms is required.	2½	-	II.
115.	Outside	28,000	3 in 3	0 in 3	Satisfactory standard of bacterial purity, but a reduction in the content of coliform organisms is required.	3	-	II.
116.	Local	128,000	3 in 3	1 in 3	Unsatisfactory, in that sample contains small numbers of organisms of excremental origin, indicating faecal contamination.	1½	-	III.
117.	Outside	19,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
118.	Outside	6,200	2 in 3	0 in 3	Satisfactory standard of bacterial purity, but a reduction in the content of coliform organisms is desired.	-	3½	II.
119.	Outside	35,000	2 in 3	0 in 3	Satisfactory standard of bacterial purity.	21	-	II.
120.	Outside	1,200	0 in 3	0 in 3	Excellent standard of bacterial purity.	--	4½	I.
121.	Outside	3,600	0 in 3	0 in 3	High standard of bacterial purity.	2½	-	III.
122.	Outside	200	0 in 3	0 in 3	Excellent standard of bacterial purity.	2	-	III.
123.	Outside	900	0 in 3	0 in 3	Excellent standard of bacterial purity.	3	-	II.
124.	Local	23,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	2½	-	II.
125.	Outside	220,000	3 in 3	0 in 3	Contains excessive numbers of bacteria and is therefore unsatisfactory.	1	-	III.
126.	Outside	14,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
127.	Outside	5,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
128.	Outside	18,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
129.	Outside	8,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
130.	Outside	15,000	0 in 3	0 in 3	Satisfactory standard of bacterial purity.	-	4½	I.
131.	Outside	2,000	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	I.
132.	Outside	1,500	2 in 3	0 in 3	Fair standard of bacterial purity, but reduction of the content of coliform organisms is desirable.	3½	-	II.
133.	Outside	8,800	2 in 3	0 in 3	Fair standard of bacterial purity, but reduction of the content of coliform organisms is desirable.	3½	-	II.
134.	Outside	4,300	0 in 3	0 in 3	High standard of bacterial purity.	-	4½	1.