178
GUDIY ATTAM.
WATER SAMPLES TAKEN–8TH JANUARY 1913.
Remarks. —A thin sheet of water was running on the other bank of the river Koundanya when
samples were taken. The supply is constant. There has been about 18.84 inches
of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.—TAP ADJOINING THE SERVICE RESERVOIR.
Nu mb e r . L a c t o a e .
S a c c h a r o s e . Dul oi t e .
Ad o n i t e . I n u l i n e . V o g e s a n d P r o s k .
Indol .
Mo d a l i t y .
Gr oup.
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C.–4,640.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
... ...
...
...
1
...
1 + + -
- - - + - IV B. Coscoroba
... Group I, 1.
2 tubes of 10 cc
...
... ...
2
...
2 + - + - - - + - II B. sehaefferi
, , I I ,
2 .
3 ,, 5 cc.
... ... ...
3
...
3 + + - - -
-
+ - IV B. Coscoroba
... „ III, 1.
3 ,,
1 cc.
...
...
... ...
I 3
...
4 + + - - -
—
+ — IV
Do.
:IV, 6.
3„
. 1
c c .
. . .
. . .
. . .
. . .
...
2
1 5 + - - - - - + - I B. Vesiculosus.
3 „
. 0 1
c c .
. . .
. . .
. . . , ...
3
6 + - + - -
-
+ - I I B. Schaefferi.
7 + + - - - - + - IV B. CoscÕroba.
Fœcal bacilli in .1 cc. and upwards.
8 + + + - - - + - III B. Neapolitauns .. Class I, 2.
9 + + - - --- - + - IV B. Coscoroba
...
, , I I
7.
No vibrios in 100 cc.
10 + + - - - - + - IV
Do.
... „ III, 1.
1 + + - - -
- + - IV B. Coscoroba
... Group I,nil.
SAMPLE II.—TAP NEAR MUHAMMADAN SCHOOL AT DHAMAMPET. 2 + + - - - - + - IV
Do.
... „ II, nil.
3 + + - - - - + - IV
Do.
...
„ III, 2.
Total colonies per cc. on agar at :37° C.–33.
4 + + - - - - + - IV
Do.
...
„ IV, 8.
Bile salt lactose, medium.
+
_
5 + + + + - + + - III B.67.
6 + + - - - - + - IV B. Coscoroba
1 tube of 20 cc. ...
...
...
1
...
7 + + + + - -
+
- III B.67.
8 + + - - - - + - IV B. Coscoroba
... Class I, nil.
2 tubes of 10 cc. ...
...
..
2
. . . 9 + + - - - - + - IV
D.
... „ 11, 10.
.3 „ 5 cc. ...
...
...
3
. . . 10 + + - - - - + - IV
Do.
... „ III, nil.
3 , , 1 c c
. . .
3
3
, ,
1 c c .
. . .
. . .
. . .
. . .
3
3 „
. 0 1 c c .
. . .
. . .
. . .
. . . 3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—TAP IN FRONT OF TRAVELLERS ' BUNGALOW.
1 + +
- - —- - + - IV B. Coscoroba
.. Group I, nil.
Total colonies per cc. on agar at 37° C.–2,520.
2 + +
+ - - - + . III B. Neapolitanus ...
, , I I ,
n i l
.
3 + + + - _ - + _ III
Do.
„ III, 2.
4 + + - - - - + - IV B. Coscoroba ...
,, IV, 8.
Bile salt lactose, medium.
+ -
5 + + - - - - + - IV
Do.
6 + + - - - - + - IV
Do.
1 tube of 20 cc. ...
...
...
...
1
...
7 + + - - _ - + _ IV
Do.
8 + + - -
- - + - 1V
Do.
.. Class I, nil.
2 tubes of 10 cc. ... ...
...
..
2
...
9 + + -
- - - + _ 1V
Do. ...,,
II, 10.
3
„
5 cc. ... ... ... ...
3
...
10 + + - - - - + _ IV
Do.
III, nil.
3
„
1 cc. ...
...
... ...
3
...
3
„
. 1 c c .
. . .
. . .
1
2
3 , , . 0 1 c c .
. . .
... ... ...
...
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
REPORT.
It is sometime since the water of the Gudiyattam supply has been so bad at this season of the year and if
any cause can be determined for the present state of affairs it should be removed without delay. The water
contains 10 fœcal germs to the cc. and all the three classes are in evidence. That is to say the pollution has
been both extensive and recent and is therefore potentially dangerous. The huge total count is confirmatory
evidence. The water from a tap near the Muhammadan school has undergone a great improvement the cause
for which is not clear. If silt has been deposited in the pipes it will give trouble later on when perhaps the
water at the headworks is better. The water at the Travellers' bungalow is again not so good. It has a very
high total count but neither in number or kind are the fœcal germs so objectionable as those found in the
service reservoir.
Chemically the water shows a good amount of temporary. hardness and some soluble sulphate The
organic matter is rich in nitrogen and curiously enough there is more of it in the water as distributed than
in the reservoir water. The section of the system that is near the Travellers' bungalow seems to require
flushing out.