19
6
COIMBATORE CENTRAL JAIL.
WATER SAMPLES TAKEN-2ND NOVEMBER 1910.
Bacteriological Analyses.
SAMPLE I.—WATER OP NEW WELL.
Total colonies per cc. on agar at 37°-1,030
Col ony number .
L a c t o s e .
S a c c h a r o s e .
Dulcite.
Adonite.
I n u l i n .
Name of Bacilli.
44
0
...
Group and
Remarks
Bile salt lactose, medium.
2
0
U ,4
48 2) )
cd r. n-t4
-- , o
-t4
-,-;
g t.. 1.:4v,
bo .,: -,-,
,
, ,.,
0
.
1 tube of 20 co. of water taken ..
..
2 tubes of 10 cc...
..
II
1
2
..
1
2
+
± - - -
-1- --I-
--- + +
I B. Grunthal
I
Do.
Do.
..
..
Group 1, 10.
„
Il, nil.
3
„
5 COO
..
..
3
0
1 CC.
..
..
,,
3
„
-1 cc.
. .
..
,,
3
3
3
..
..
..
3
4
5
-1- --
+ -
-I- -
- -
- -
-
- -+ +
- + -I-
- - + +
I
I
Do.
I
Do.
I
Do
cr,
..
. -
. .
HI,
„
nil.
„
IV, nil.
Class I, nil.
nil.
3
„ -01 cc.
3
..
6
7
+ -
-F -
- -
- -
-,- + +
- - 4- -I-
I
Do
..
..
. .
10
, )
, 10.
Fcecal bacilli in -01 oc. and upwards.
8
9
+ -
-1- -
- --
- -
- - + +
- - -1- - I-
I
Do.
I
Do.
. '
Vibrios present in 100 cc.
10 + - - - - - + + I
Do.
SAMPLE II.—WATER OF OLD WELL.
1 + +- — -- — — + --1– IV B. 106
..
.. Group I, 8.
_Total colonies per co. on agar at 37°-3,000.
2
3
-1- -
+
--
- - -
-- - +
- - + +
- I B. Ve.ioulosus
I B. Grunthal
..
..
„
II, nil.
It
DI, nil.
+
-
Bile salt lactose, medium.
4
5
+ -
± -
- -
-
- - + +
- - - + -
I
Do.
I B. Vesicnlosus
.
I
2.
II
V, 2
Class I, nil.
6 + + - - - - + - IV B. Coscoroha
. .
), II , 2.
7 -1- - - - - - -I- -
f B. V esiculosus
..
„ III, 8.
1 tube of 20 cc. of water taken ..
..
2 tubes of 10 cc.
. .
..
,'
3
,,
5 co.
,,
. .
. .
1
2
3
..
' . .
.
8
9
10
+ -
+
+
-
- - -
- - -
- - -1- _
--+ --
- - -I- -
I
I
I
Do.
D.
Do.
3
„
1 cc.,,..
- .
3
„
. 1 co,..
..
3
.
. ' ,
3
„
.01 cc.
II "
. .
p ostal bacilli in .01 cc. and upwards.
3
..
No vibrios in 100 cc.
REPORT'.
Chemically this water-supply is always bad, and there is little enough to choose between the waters of
-the two wells. The only fluctuation shown in the quality of the water lies in there being evidence of more
or less recent pollution. On the present occasion this evidence is conflicting as regards period, but there is
ti no doubt about the amount of the pollution. This is large there being one hundred faecal germs to the cc.
.and high total counts in both waters. Considering the water of the New Well first, it is quite probable that
the highly resistant, B. Grunthal, may have come from a considerable distance, but the same cannot be said.
for the vibrios, which are much more susceptible to natural purifying agencies. The water of the Old Well
Aloes not contain vibrios but it has an even higher total count and an undesirable variety as shown by the
fecal germs. The water is no better than on the last (special) examination.
of
Is
bit
ms
ies
;h.
to
of
Chemical Analyses.
SAMPLE II,
SAMPLE 1,
NEW WELL
OLD WELL
WATER.
WATER.
Physical appearances.
Colour and
Transparency.
Colourless and
clear.
Colourless and
clear.
Smell.
None.
None.
QUANTITATIVE.
'Total s lids
..
..
Parts per 100,000
202.000
225.000
Temporary hardness ..
..
.
I)o.
50.000
32-500
Permanent hardness ..
..
..
Do.
45.000
57.500
Total hardness
..
..
Do.
95.000
90'000
Chlorine
. . . .
Ammoniacal nitrogen ..
. .
.
. .
'
.
Do.
1)o.
46.150
Trace.
49'700
Traoe.
Alburninoid nitrogen . ..
Do.
0-002
Trace
Oxygen absorbed (Tidy's _Proms) . .
1)o.
0.018
0-018
Nitric nitrogen
. .
..
Do.
0.450
0.000
QUALITATIVE.
N itrites
..
..
..
..
-Sulphates
. .
Phosph.,.tes ..
. .
Iron, poisonous metals
..
Marked.
1111, nil.
Nil.
Marked.
Nil, nil.
• ..
..