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54
PUBLIC BATHS AND WASH-HOUSES
The rebuilt swimming baths and wash-houses were re-opened to the public in September,
1937. They provide a first class men's bath, a first class ladies' bath and a bath for mixed bathing,
together with 16 first class and 41 second class slipper baths for men; and 10 first class and 15
second class slipper baths for women; 4 foam baths for women are provided. The wash-houses
contain 12 compartments.
In December samples of water were taken from the swimming bath at 8.0 a.m. and 7.40 p.m.
and submitted for bacteriological and chemical analysis. The reports are given below, compared
with those for similar samples taken in 1936, before the reconstruction.
1937.
1936.
Morning.
Evening.
Morning.
Evening.
Parts per 100,000.
Parts per 100,000.
(1) Chemical.
Ammonia, Saline
.390
.416
.014
.02
Ammonia, "Albuminoid"
.056
.058
.018
.014
"Oxygen absorbed" at 27°C.—
In 15 minutes
.034
.025
.035
.035
In 4 hours
.083
.090
.064
.054
Total solid residue
68.3
68.8
55.44
56.00
Chlorine
7.75
7.85
8.95
8.95
Free Chlorine
.01
-
-
-
Nitrogen, as Nitrates
.16
.17
1.25
1.25
Nitrogen, as Nitrites
.02
.02
.004
.002
Total hardness
20.0
20.0
8.4
9.2
Poisonous metals
Absent
Absent
Absent
Absent
Appearance
Clear and bright,
faint yellow colour.
Fairly clear, colourless
and odourless.
(2) Bacteriological.
Average number of organisms producing
visible colonies on agar plates incubated
at 22°C. for 3 days.
75,000
in 1 c.c.
180,000
in 1 c.c.
80,000
in 1 c.c.
4,000,000
in 1 c.c.
Average number of organisms producing
visible colonies on agar plates incubated
at 37.5°C. for 2 days.
30,000
in 1 c.c.
150,000
in 1 c.c.
60,000
in 1 c.c.
3,100,000
in 1 c.c.
B. Coli
Absent
Absent
Absent
Present
Streptococci
Absent
Absent
Absent
Present