97
BEZWADA.
WATER SAMPLES TAKEN—30TH JULY 1912.
Remarks.— The supply is intermittent. There has been about 15.44 inches of rain since last
analysis.
Bacteriological Analysis.
SAMPLE I.—FIRST TAP AFTER SERVICE 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 . I n u l i n . 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 . G r o u p .
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37º C.—Cannot be counted.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
1
. . .
1
+ +
-
- - + - + IV B. Cloacæ
Group I, nil.
2 + + - + - + - - IV B. Lactis ærogenes.
"
II, nil.
2 tubes of 10 cc.
2
. . .
3 + + - - - + - + IV B. Cloacæ
" III, nil.
3
"
5 cc.
3
. . .
4 + + - + - + - - IV B. Lactis ærogenes.
" IV, 10.
3 " 1 cc.
3
. . .
5 + + - + - +
-
- IV
Do.
3
"
.1 cc.
2
1
6 + +
-
- - + - + IV B. Cloacæ.
3 . 01c c .
. . .
3
7 + + - + - + - - IV B. Lactis ærogenes.
8 + +
-
+ - +
- -
IV
Do.
Class I, nil.
Fœcal bacilli in .1 cc. and upwards.
9 + +
-
-
-
+ - + IV B. Cloacæ
"
II, 5.
10
+
+
-
- -
+ -
+ IV
Do.
" III, 5.
No vibrios in 100 cc.
SAMPLE II.—TAP AT THE END OF ELLORE ROAD NEAR TOLL-
GATE.
1 +
- - - - -
+ + I B. Grunthal
Group I, 2.
2 + + - + - + - - IV B. Lactis ærogenes.
" II, nil.
Total colonies per cc. on agar 37º C.—750.
3 +
-
- - - -
+ + I B. Grunthal
" III, nil.
Bile salt lactose, medium.
+
-
4
+ + - + + - + -
I V
?
" I V , 8 .
5 + + - + - - + - IV B. 101.
6
+ +
-
+
- -
+
- IV Do.
1 tube of 20 cc.
1
. . .
7 + + - + + - + - IV
?
Class I, nil.
8 + + - + + - + - IV
?
"
II, 3.
9 + + - - - + - - IV B. 112
" I I I , 2 .
2 tubes of 10 cc.
2
. . .
10 + + - - - + - - IV Do.
Undetermined,
5.
3
"
5 cc.
3
. . .
3
"
1 cc.
2
1
3
"
.1 cc.
. . .
3
3
"
.01 cc.
. . .
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—FOUNTAIN NEAR NUZVID TOLL-GATE.
1 + +
-
- -
+
- + IV B. Cloacæ
Group I, nil.
Total colonies per cc. on agar at 37º C.—830.
2 + +
-
- -
+
- + IV
Do.
"
II, nil.
3 +
+ -
- -
+
- + IV
Do.
" III, nil.
Bile salt lactose, medium.
+
-
4 + +
-
- - + -
+
1V
Do.
" IV, 10.
5 + + - - - + - + IV
Do.
1 tube of 20 cc.
1
. . .
6 +
+
- - -
+
- + IV
Do.
7 +
+
- - -
+
- + IV
Do.
2 tubes of 10 cc.
2
. . .
8
+
+
- - -
+ -
+ IV
Do.
Class I, nil.
3
"
5 cc.
3
. . .
9
+ + - - - + - + 1V
Do.
"
II, nil.
3
"
1 cc.
3
. . .
10 +
+
- - -
+
- + IV
Do.
" I I I 1 0 .
3
"
.1. cc.
1
. . .
3
" .01 cc.
. . .
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
REPORT.
There seems to be a distinct tendency to deterioration in the Bezwada water at this season of the year.
This year it is definitely worse than it was in 1911, and in 1911 it was worse than in 1910, when these
examinations were started. The water is now polluted to a considerable degree but it cannot be said that the
pollution is of a very objectionable character. The water as distributed is rather better than that at the
headworks, but the total counts are high and the variety of species among the fœcal bacilli in the sample
taken near the toll-gate on the Ellore road does not say much for the cleanliness of the pipes at that place.
Chemically the water shows a seasonal fluctuation as regards total solids and hardness, and these are at their
lowest at this time of the year.