32
SAMPLE V.—TAP IN FRONT OF COLLECTOR 'S OFFICE,
BUDAVARAM PET.
n u m b e r . L a c t o e s .
Lact os e.
s a c c h a r o s e .
Dul ci t e.
Adoni t e.
Innl i n.
V o g e s a n d P r o s k .
Indol .
Mo t i l i t y .
Group.
Name of Bacilli.
Groups and
Remarks.
Total colonies per cc. on agar at 37° C.--47.
Bile salt lactose, medium.
+
-
1 tube of 20 oc.
...
...
...
...
1
. .
1 + + + + - + - - III B. 67.
...
... Group I , n i l .
,
2 tubes of 10 cc.
...
...
...
...
1
1
2 + + + + - + - -
I I I
Do.
...
. . .
” I I , n i l ,
3
˝
5 cc.
...
...
...
...
2
1
3
+ + + + -
+ - - III
Do.
..
...
” I I I , n i l .
3
˝
1 cc.
...
...
...
. . .
3
4 + + + + - + - - III
D o . . . . . . .
” I V , n i l .
3 ”˝
. . 1 C C
. . .
. . .
. . .
. . .
...
3
5 + + + + - + - - III
D o .
Do.
3
˝„ .01 cc.
...
. .
. . .
. . .
. . .
3
6 + + + + - + - - Ill
Do.
...
... Class I , n i l .
Fœcal bacilli in 5 cc. and upwards.
7
+ + + + -
+ - - III
Do.
...
. . .˝I
I , 1 0 ,
II,,10,
8 + + + + - + - - III
Do.
. . .
. . .˝˝
I I I , n i l .
9 + + + + - + - - III
Do.
No vibrios in 100 cc.
10 + + + + - + - - III
Do.
SAMPLE VI.— TAP IN BASTIAN ROAD TERMINUS —
1 + - - - - - + - I
B. Vesiculosus
... Group I,10,
2 + - -- - - - + - I
Do.
...
,, II, nil,
FOUNTAIN No. 12. .
3 + -- - - - - + - I
Do.
...
„ III, nil,
4 + -- - - - - + - I
Do.
...
„ IV, nil,
Total colonies per cc. on agar at 37° C.--410.
-
5 + - - - - - + -
I
Do.
6 + - — - - - + - I
Do.
... Class I, nil,
7 +-- - -- - +- I
Do.
II, nil,
Bile salt lactose, medium.
8 + - - - - - + - I
Do.
III, 10,
9 + - - - - - + - I
Do.
1 tube of 20 cc
...
. . .
. . .
. . .
1
. . .
10 + - - - - - +
I
Do.
2 tubes of 10 cc.
. . .
...
...
...
2
...
3
5 c c .
. . .
. . .
. . .
. . .
3
. . .
3
˝1 C C .
. . .
. . .
. . .
. . .
3
...
3
„
'1 cc.
...
...
. . .
...
2
1
3
„ .01 cc.
...
...
...
...
...
3
fœcal bacilli in ּ1 cc. and upwards.
No vibrios in 100 cc.
REPORT.
A most welcome improvement in results is shown at the headworks this year, when compared with those
of last year, the meteorological and other conditions being much the same. Surely this can only be at t r i -
buted to better management. It is true that the canal water was better this year than last, but it was
greatly improved by settling and filtration, whereas no improvement at all was noted last year. The water
as it issued from the Service Reservoir this year was very good. A slight falling off is to be noted when it
reaches the town, and this is specially marked in the section of pipe in the Bastain Road. There must be
some silt in this length of pipe which should be flushed out. On a previous occasion remarkably pure water
was got at this place, so defects in the pipe can probably be excluded.
Chemically the water as distributed is excellent, the rather large amount of animal organic matter having
been got rid of by filtration.
Chemical Analyses.
SAMPLE I.
SAMPLE II.
Physical appearances.
Colour and
Transparency.
White and opaque.
White and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids ...
...
...
...
... Parts per 100,000 ...
25'600
20'600
Temporary hardness
. . .
. . . .
. . . .
Do
...
6'000
Permanent hardness
...
...
...
Do
...
2'000
Total hardness
...
...
...
...
Do
...
10'000
8'000
Chlorine
... ...
. . .
. . .
. . .
Do.
...
3'195
2'840
Ammoniacal nitrogen
. . .
. . .
. . .
Do.
. . .
0'003
0'002
Albuminoid nitrogen
...
...
. . .
Do.
...
0'011
0'011
Oxygen absorbed (Tidy's Process) ...
...
Do.
. . .
0'o77
0'070
Nitric nitrogen
..
...
...
...
Do.
...
0'037
0'025
QUALITATIVE.
Nitrites
... ...
. . .
. . .
. . .
...
...
. . .
. . .
Nil.
Nil.
Sulphates
...
...
...
...
...
...
...
. . .
Present.
Present.
Phosphates ...
...
. . .
. . .
. . .
. . . . . . . . .
. . .
Nil.
Nil.
Iron, poisonous metals
...
...
. . .
...
...
...
...
Nil, nil.
Nil, nil.