65
DINDIGUL.
WATER SAMPLES TAKEN—21ST MAY 1912.
Remarks.—Water is derived from two sources, (1) an infiltration gallery and (2) a deep well.
Infiltration gallery was used as a source of supply when samples were taken.
The supply is intermittent. There has been about 2.65 inches of rain since
last analysis.
Bacteriological Analyses.
SAMPLE I.—TAP IN FRONT OF PUMPING STATION (DEEP WELL). C o l o n y n u m b e r . L a c t o s e .
Sacchar ose. D u l c i t e . A d o n i t e . L n u l i n .
V o g e s a n d P r o s e . I n d o l . M o t i l i t y .
G r o u p .
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C.—53.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
...
...
. . .
1
...
1 + + - - - - + - IV B. Coscoroba
... Group I, 1.
2 tubes of 10 cc.
...
...
...
...
2
...
2 + + - - - - + - IV
Do. ...
„ II, nil.
3
„
5 cc.
...
...
...
3
. . .
3 + + - + - + - - IV B. Lactis ærogenes.
„ III, 4.
3 „ 1 cc.
...
...
...
...
3
. . .
4 + + + - - - + - III B. Neopolitanus ..
„
IV, 5.
3
„
. 1 c c .
. . .
. . .
1
2
5 + + + - - - + - III
Do.
3
„
. 0 1 c c .
. . .
. . .
. . .
. . .
3
6 + + - - - - + - IV B. Coscoroba.
7 + + + - - - + - III B. Neopolitanus.
Fœcal bacilli in 1 cc. and upwards.
8 + -
- - - - + - I B. Vesiculosus ... Class I, nil .
9 + + + - - - + - III B. Neopolitanus ...
„
II, 9.
No vibrios in 100 cc.
10 + + - - - - + - IV B. Coscoroba
„ I I I , 1 .
SAMPLE II.—FOUNTAIN No. 19 IN EASTERN END.
1 + + + - - - + - IV B. Neopolitanus ... Group I, nil.
Total colonies per cc. on agar at 37° C.—15.
2 + + - - - - + - IV B. Coscoroba
...
„ II, nil.
3 + + - - - - + - IV
Do.
...
„ III, nil.
4
+ + - - - - + + IV 13. 106
...
...
„ IV, 10.
Bile salt lactose, medium.
+
-
5 + + - - - - + - IV B. Coscoroba.
6
+ + - - - - - + - IV
Do.
1 tube of 20 cc.
...
...
.. .
1
. . .
7 + + - - - - + - IV
Do.
2 tubes of 10 cc.
...
..
. . .
1
1
8 + + - - - - + - IV
Do.
... Class I, nil.
3
„
5 cc.
...
...
...
. . .
. . .
3
9 + + - - - - + - IV
Do.
...
„ II, 10.
3
„
1 cc.
...
...
..
...
. . .
3 10 + + - - - - + - IV
Do.
...
„ III, nil.
3
„
. 1 c c .
. . . . . .
. . .
3
3
„
. 0 1 c c .
. . .
. . . ...
3
Fœcal bacilli in 10 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—FOUNTAIN No. 10 IN DROWPADI AMMEN STREET.
1 + + + - - + - - III B. 75
...
... Group I, 7.
2 + + + - - + - - III
Do.
...
. . . „
II, nil.
Total colonies per cc. on agar at 37° C.—4.
3
+ - - + - + - - I B. Acidi lactici ...
„ III, 2.
4
+ - - + - - + - I
Do.
...
„ IV, 1.
5 + - - + - - + - I
Do.
Bile salt lactose, medium.
+
-
6
+ - - + - - + - I
Do.
7 + - - + - - + - I
Do.
... Class I, nil .
8 + - - + - - + - I
Do.
„ I I , 7 .
1 tube of 20 cc....
...
...
1
. . .
9
+ + - -
- + + + IV B. 113
...
„ III, 2.
2 tubes of 10 cc.
...
...
2
. . .
10 + - - + - - + - I B. Acidi lactici
Undetermined,
3
„
5 cc.
. .... ...
3
. . .
1.
3
,,
1 cc.
...
...
...
...
1
2
3
„
.1 cc.
. . .
3
3
„
.01 cc.
... ... ... ...
...
3
Fœcal bacilli in 5 cc. and upwards.
No vibrios in 100 cc.
REPORT.
Dindigul again falls to be congratulated on the quality of its drinking water-supply as distributed.
Very small total counts and few fœcal bacteria have characterised this water for some time now, a state of
affairs greatly changed from what was often found a few years ago. As usual the water of the deep well is not
nearly so good, but even it is not bad. Chemically there is nothing new to record.