9
RAJAHMUNDRY CENTRAL JAIL.
WATER SAMPLES TAKEN—31ST MAY 1910.
Bacteriological Analyses.
SAMPLE I.—FROM THE TAP OF RESERVOIR
N u m b e r . L a c t o s e .
S a c c h a r o s e .
D u l c i t e . A d o n i t e .
Inulin.
V o g e s a n d P r o s k .
I n d o l .
M o t i l i t y .
Group.
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° — 1,350.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
..
..
..
. .
1
. .
2 tubes of 10 cc.
..
.. . .
. .
2
..
1 + - - - - - - - I B. Mutabilis
.. Group I, 5.
3 " 5 cc.
. .
. .
. .
. .
3
. .
2
+ - + - - - + - II B. Schæfferi
..
,, II, 2.
3 „
1 cc.
. .
. .
. .
. .
3
..
3 + - - - - - - - I B. Mutabilis ..
,, III, nil.
3
„
. 1 c c .
. .
. .
. .
. .
2
1
4 + + - - - - - - IV B. III
..
..
,, IV, 3.
3 „
. 0 1 c c .
. .
. .
. .
. .
..
3
5 + + - - - + - + IV B. Cloacæ
6 + - - - - - - - I B. Mutabilis.
7
+ - - - - - - - - I
Do.
.. Class I, 2.
Fœcal bacilli in .1 cc. and upwards.
8 + - + -
- - + -- II B. Schæfferi
II, nil.
9 + - - - - - - - I B. Mutabilis
..
,, III, 7.
No vibris in 100 cc.
10 + + - - -+ - + IV G. Cloacæ
.. Undetermined, I.
SAMPLE II. —FROM THE DRINKING WATER WELL IN NO. VIII
BLOCK.
1 +
-
- + - - + - I B. Acidi Lactici .. Group I, 7.
Total colonies per cc. on agar at 37° — 1,260.
2 + + - + - - - - IV B. Gasoformans ..
,, II, nil.
3 + - - + - - + - I B. Acidi Lactici ..
,, III, nil.
4 + -- - + - - + - I
Do.
..
,, IV, 3.
Bile salt lactose medium.
+
-
5 +
- - + - - + - I
D o .
6 + - - + - - + - I
Do.
7 + - - + - - + - I
Do.
Class I, nil.
1 tube of 20 cc.
..
..
.. ..
1
. .
8
+ - - + - - + - I Do.
..
,, II, 40.
2 tubes of 10 cc.
..
..
..
2
. .
9 + + - + - - - - IV B. Gasoformans
,, III, nil.
3 „
5 cc.
..
..
..
3
. .
10 + + - + - - - - IV
D o .
3 „
1 cc.
..
..
3
..
3 „
.1 cc.
2 1
3
„
.1 cc. .. .. .. ..
3
Fœcal bacilli in .1 cc. and upwards.
No vibrios in 100 cc.
REPORT.
This is not the first time that the water taken from the tap of the reservoir has proved to be worse than,
the water of the well in No. VIII Block, but it is the first time that the highly susceptible germs of Class I
have been isolated from it. This is a most undesirable state of affairs and one which, from the evidence of
the results, should be preventible. The chemical results show pretty conclusively that the ultimate source of
the waters is the same, therefore the recent pollution in the reservoir water most probably has a purely local
origin. This should be enquired into and prevented in future. Both the samples show too high a total
count and the high figure for oxidised nitrogen points to antecedent pollution. Any slight difference in the
chemical results is in favour of the Reservoir water.
Chemical Analyses.
SAMPLE I, WATER FROM
THE TAP OF RESERVOIR.
SAMPLE II, DRINKING
WATER WELL IN
BLOCK NO. VIII.
Physical appearances.
Colour and
Transparency.
Colourless and clear. Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
.. .. .. .. ..
Parts per 100,000 ..
36 200
35.800
Temporary hardness
..
..
..
Do.
1 2 . 5 0 0
13.000
Permanent hardness
..
.. ..
Do.
..
9 . 5 0 0
9.000
Total hardness ..
..
..
Do.
..
2 2 . 0 0 0
2 2 . 0 0 0
Chlorine
..
..
..
Do.
2 . 8 4 0
2.840
Ammoniacal nitrogen ..
.. ..
Do.
..
0 . 0 0 3
0.007
Albuminoid nitrogen ..
.. .. ..
Do.
..
Trace.
0.006
Oxygen absorbed ( Tidy's Process )
..
..
Do.
0.012
0.026
Nitric nitrogen ..
..
..
..
Do.
..
0.675
0.750
QUALITATIVE.
Nitrites ..
Nil.
Nil.
Sulphates ..
..
.. .. .. .. ..
Trace.
Present.
Phosphates .. .. .. .. .. .. .. .. ..
Nil.
Nil.
Iron, poisonous metals ..
..
..
..
Nil, nil.
Nil, nil.
3