NationalLibraryOfScotland/medical-history-of-british-india huggingface dataset:
45 (d)
REPORT.
Bacteriologically the water at the headworks remains in much the same state as was
reported previously ; the water at headworks is therefore of a good quality. The water in the
service reservoir however shews quite the opposite state of affairs, so that contamination must be
taking place either en route or at the reservoir. The water in the distributary system is of
uniform quality resembling that of the service reservoir.
Chemically the water has not undergone any appreciable change since the previous quarter.
Chemical Analyses.
SAMPLE I.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
Colurless and clear.
Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
...
...
...
...
... Parts per 100,000 ..
58.000
59.800
Temporary hardness ...
...
...
...
Do.
...
15.500
15.500
Permanent hardness ...
...
...
...
Do.
...
1.500
1.500
Total hardness ...
...
... ...
...
Do.
...
17.000
17.000
Chlorine...
... ... ... ...
Do.
... 2.307
2.307
Ammoniacal nitrogen ... ... ... ...
Do.
... Trace.
Trace.
Albuminoid nitrogen ...
... ... ...
Do.
...
0.004
0.003
Oxygen absorbed (tidy's Process)
...
...
Do.
...
0.029
0.019
Nitric nitrogen
... ...
...
...
Do.
...
0.175
0.187
QUALITATIVE.
Nitrite
... ... ...
... ...
...
... ... ...
Nil.
Nil
Sulphates ...
...
...
... ...
... ...
...
...
Present.
Present.
Phosphates ...
...
...
...
...
... ...... ...
Nil.
Nil.
Iron, poisonous metals ...
...
...
...
...
... ...
Nil, nil.
Nil, nil.
A
!t:bae
45 ( e)
NELLORE.
WATER SAMPLES TAKEN—12TH AUGUST 1911.
REMARKS.—The sample was not taken from the river-bed as it was dry. The supply is intermittent. There has been
about 2.49 inches of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.—A TAP IN FRONT OF PUMPING STATION AT HEADWORKS.
Numbe r .
Lact os e.
S a c c h a r o s e . Dulcite.
Adoni t e.
I nul i ne.
V o g e s a n d P r o s k .
I n d o l .
Mot i l i t y. Group.
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C.—140.
Bile salt lactose, medium.
+-
-
1 tube of 20 cc.
... ... ... ... ...
. . .
1
1 + +
- - -
+
- -
IV B. 112
... Group I, nil.
2 tubes of 10 cc.
...
...
...
...
1
1
3 „ 5 cc.
... ...
...
. . .
3
2
+ +
- - - +
- - IV
Do.
...
...
„ II, nil.
3 „ 1 cc
...
...
...
. . .
. . .
3
3
+ +
- - - +
- - IV
Do.
...
„ III, nil.
3 „ .1 cc.
...
...
...
...
. . .
3
4 + +
- - - +
- - IV
Do.
...
...
„ IV, 10.
3 „ .01 cc.
...
...
. . .
. . .
. . .
3
5 + +
- - - +
- - IV
Do.
6 + +
- - - +
- - IV
Do.
Fœcal bacilli present in 60 cc.
7 + +
- - - +
- - IV
Do.
...
... Class I, nil.
8 + +
- - - +
- - IV
Do.
...
...
„ II, nil.
9 +
+ - - - - - - IV
Do.
...
...
„ III, nil.
No vibrios in 100 cc.
10 + +
- - - +
- - IV
Do.
...
... Undetermined, 10.
SAMPLE II.—A TAP IN EASTERN CORNER—FOUNTAIN NO. 3
NAVVAPET.
No lactose fermenters.
Total colonies per cc. on agar at 37° C.—40.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
...
...
. . .
1
2 tubes of 10 cc.
...
...
...
. . .
2
3 „ 5 cc.
...
...
...
. . .
3
3 „ 1 cc.
...
...
...
...
. . .
3
3 „ .1 cc.
...
...
...
...
...
3
3 „ .01 cc.
...
...
... ...
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
S A M P L E I I I . — A T A P I N S O U T H E R N C O R N E R I N F R O N T O F
DISTRICT COURT—FOUNTAIN No. 52.
1 + +
- +
- +
- - IV B. Lactis ærogenes.
Group I, nil.
2
+ + - + - +
- - IV
Do
„ II, nil.
Total colonies per cc. on agar at 37° C.—210.
3 + +
- +
- +
- - IV
Do.
„ III, nil.
4 + +
- +
- +
- - IV
Do.
„ IV, 10.
Bile salt lactose, medium.
+
- 5 + +
- +
- +
- - IV
Do.
6 + +
- +
- +
- - IV
Do.
7
+ + - + - +
- - IV
Do.
1 tube of 20 cc. of water taken ...
...
1
...
8 + +
- +
- +
- - IV
Do.
Class I, nil.
9 + +
- +
- + - - IV
Do.
„ II, 10.
2 tubes of 10 cc. „
. . .
2 10 + +
- +
- + - - IV
Do.
„ III, nil.
3 „ 5 cc.
...
. . .
. . .
3
3 „ 1 cc.
...
. . .
. . .
3
3 „ .1 cc.
. . .
. . .
3
3 „ .01 cc....
. . .
. . . 3
Fœcal bacilli in 20 cc. and upwards.
No vibrios in 100 cc.
REPORT.
The water-supply both at the Headworks and the Distributary system shows a high state of purity
bacterially.
Chemically the water is as usual hard and saline.
45 (f)
Chemical Analyses.
SAMPLE I.
SAMPLE III.
Physical appearances.
Colour and
Transparency.
Colourless and clear.
Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids
...
...
... Parts per 100,000
...
48.400
49.000
Temporary hardness
...
...
...
Do.
. . .
19.000
21.500
Permanent hardness
...
...
Do.
. . .
3.000
1.500
Total hardness
...
...
...
Do.
...
22.000
23.000
Chlorine
...
...
... ...
...
Do.
...
7.100
7.100
Ammoniacal nitrogen
...
Do.
...
0.008
0.003
Albuminoid nitrogen
. . .
. . .
Do.
...
0.004
0.006
Oxygen absorbed (Tidy's Process)
...
Do.
. . .
0.029
0.038
Nitric nitrogen
...
...
...
Do.
. . .
Trace.
Trace.
QUALITATIVE.
Nitrites
...
...
...
...
...
...
...
...
Nil.
Nil.
Sulphates ...
...
...
...
...
...
...
Present.
Present.
Phosphates ...
...
...
...
...
...
...
...
Nil.
Nil.
Iron, poisonous metals
...
...
. .. ... ... ... ...
Nil, nil.
Nil, nil.
WATER SAMPLES TAKEN-19TH AUGUST 1911.
REMARKS.—The reservoir at Bandami was' full. The supply is intermittent. There has been about 12 .46 inches
of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.—RESERVOIR AT BANDAMI.
. 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 . '
Adoni t e.
I n u l i n e .
V o g e s a n d P r o s k .
V o g e s a n d P r o s k .
M o t i l i t y . G r o u p .
Name of Bacilli.
Group and
Remark.
Total colonies per co. on agar at 37° C.-90.
Bile salt lactose, medium.
+
-
1 tube of 20 cc. ...
... ... .... 1
...
1 + + + - - - + - III B. Neopolitanus ... Group I, 5.
2 tubes of 10 cc. ... ...
. - -
2
2 + 4- + - - - + - III
Do....
n i l .
71
3 „
...
3 +
+ - I B. Vesiculosus ...
„ III, 5.
3 „
4 +
+ - I
Do.. .. „
nil.
3 ,,
1
5 +
+ - I
Do.
3
'01 cc. ... ...
...
1
2
6 + + + - - - + - III B. Neopolitanns.
„
7 + + + - - - +
-
III
Do.
Fœcal bacilli in .1 cc. and upwards.
8 + + + - - - + - III
Do.
... Class I, nil.
9 +
+ - I B. Vesiculosas
...
„ II, 5.
No vibrios in 100 cc.
10 +
+ - I
Do.
III, 5.
SAMPLE II.—FIRST TAP AFTER SERVICE RESERVOIR.
1 + — — + — — + — I B. Acidi lactici
Group I, 10.
Total colonies per cc. on agar at 37° C.-40.
2 +
+ - I
...
B. Vesiculosus
...
„ II, nil.
3 + - - + - - + - I B. Acidi lactici ...
„ III, nil.
4 + - - - - - + - 1 B. Vesiculosus
...
„ IV, nil,
5 + - - + - - + - I B. Acidi lactic.
Bile salt lactose medium.
+
-
6 +
+ - I B. Vesiculosus.
7 +
+ - I
Do.
S + - - + - - + - I B. Acidi lactici ... Class I, nil.
1 tube of 20 cc.
...
... ... ...
1
...
9 + - - + - -
+ I
Do.
... „ II, 5.
2 tubes of 10 cc.
...
...
... ...
2
... 10 +
+ - I B. Vesiculosus
..
„ III, 5.
3 „
3
...
3 „
1 cc.
3 „
3
3 „
'01 cc.
... ...
...
... „.
3
Fœcal bacilli in 1 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—TAP IN FRONT OF POST AND TELEGRAPH OFFICE.
1 ±
— I B. Vesiculosus ... Group I, 10.
Total colonies cc. on agar at 37° C.--70.
2 + - - - -
+ - I
Do,
II, nil.
3 + - - - - - + - I
„ III, nil.
Do.
...
per
4 +- - - - - +- I
Do.
IV, nil,
5 +
I + — I
Do.
Bile salt lactose, medium.
+
-
6 + - - - - - + - I
Do.
7 + - - - - - + - I
Do.
8 +
+ - I
Do.
... Class I, nil.
1 tube of 20 cc. ...
...
...
...
...
9 +
+ - I
Do.
II, nil.
2 tubes of 10 cc. ...
...
..
2
...
. 1 0 +
+ - I
Do. ...
„ III, JO.
3 ,,
5 cc. ...
... ... ... 3
3 „ 1 c c .
2
1
3 „ . 1 c c
3
3 „
'01 cc. ...
...
-
- ...
3
..
Fecal bacilli in 1 cc. and upwards.
No -vibratos in 100 cc.
SAMPLE IV.—TAP NEAR RUN GIAH GOUNDEN 'S COMPANY IN
WELLINGTON ROAD.
1 + + + — — + — — III B. 75.
... ... Group I, 1.
Total colonies per cc. on agar at 37° C.-40.
2 + + + - - + - -
I I I Do.
II, nil.
3 + - - - - - + - I B. Vesiculosus
...
„ III, 9.
Bile salt lactose, medium.
4 + + + - - + - - III B. 75.
1V, nil.
+
-
5 + + + - - + - - III Do.
6 + + + - - + - - III Do.
7 + + + .- - + - - Ill. Do.
1 tube of 20 cc. ... --.
..
...
1
...
8 + + + -- - + - - III Do.
... Class I, nil
2 tubes of 10 cc. ...
-.
-
2
9 + + + -
.
-
- + - - III Do.
.
II, nil.
3 77
5 cc. ..
... ...
... 3
.... 10 + + . 4- — — + — — III Do.
...
„ III, 10.
3 „
3
3
[
3 „ .01 cc. ...
...
... ... ...
3
bacilli in 1 cc. and upwards.
F
œ c a l
.
, No vibrios in 100 cc.
47 (b)
REPORT.
Bacteriologically the samples of this quarter are in a more satisfactory condition than those
of the last. The total counts in all the samples are exceedingly low and there is considerable
improvement in the nature of fœcal organisms present.
The water from the storage reservoir shows slight improvement, but the water of the service
reservoir is bacteriologically far better. It does not contain the susceptible organisms found
at the last examination but only a mixure of the resistant type. The water of the distributary
system has also improved.
Chemically the waters are considered as suspicious.
Chemical Analyses.
SAMPLE I.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
Slightly yellowish
and hazy.
Slightly yellowish
and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids
...
...
...
...
... Parts per 100,000 ...
2.600
2.600
Temporary hardness ...
...
...
...
Do.
. . . Nil.
N i l .
Permanent hardness ...
...
...
...
Do
...
0.500
0.500
Total hardness ...
...
. . .
...
...
Do.
. . . 0.500
0.500
Chlorine...
. . .
. . .
. . .
. . .
Do.
...
0.284
0.284
Ammoniacal nitrogen ...
...
...
...
Do.
...
Trace.
Trace.
Albuminoid nitrogen ...
...
...
...
Do.
...
0.009
0.005
Oxygen absorbed (Tidy's Process) ...
...
Do.
...
0.080
0.064
Nitric nitrogen ...
...
. . .
...
. . .
Do.
...
Trace.
Trace.
QUALITATIVE.
Ni t r i t e s
. . .
. . .
. . .
. . .
. . .
. . .
. . . . . .
. . . Nil.
Nil.
Sulphates ...
. . .
...
...
...
...
...
...
...
Nil.
Nil.
Phosphates ...
...
...
...
. . .
...
...
...
...
Nil.
Nil.
Iron, poisonous metals ...
...
...
...
...
...
...
Nil, nil.
Nil, nil.
48
OOTACAMUND.
WATER SAMPLES TAKEN—20TH, 21ST & 22ND AUGUST 1911.
REMARKS.—All the Reservoirs except Marlimund Reservoir were full and overflowing when samples were taken. The level of water
in the Marlimund Reservoir was about 18.50 feet. The supply is constant. Rainfall since last analysis is as follows :—
Names of reservoirs.
Inches.
Dodabetta...
...
...
. . .
. . .
. . .
. . .
. . .
23.11
Tiger Hill. ...
...
...
...
...
...
. . .
. . .
23.11
Marlimund...
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
. . .
18.55
Bacteriological Analyses.
SAMPLE I.—DODABETTA UPPER RESERVOIR.
Nu mb 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 e .
M o t i l i t y .
G r o u p .
Name of Bacilli.
G r o u p a n d
Remarks.
Total colonies per cc. on agar at 37°C.—60.
Bile salt lactose, medium.
+
-
No Lactose Fermenters.
1 tube of 20 cc. ...
...
...
... ...
1
2 tubes of 10 cc...
...
. . .
..
2
3 „ 5 cc. ... ... ... ...
. . .
3
3 „ 1 cc.
...
...
. . .
3
3 „ .1 cc.
...
...
...
...
. . .
3
3 „ .01 cc...'... ... ...
...
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
SAMPLE II.—DODABETTA LOWER RESERVOIR.
No Lactose Fermenters.
Total colonies per cc. on agar at 37° C.—10.
Bile salt lactose, medium.
+
-
1 tube of 20 cc. ...
...
... ... . . .
1
2 tubes of 10 cc. ...
...
...
... ...
2
3 „ 5 cc.
..
..
...
...
. . .
3
3 „ 1 cc.
...
3
3 „ .1 cc. ...
...
...
...
. . .
3
3.„ .01 cc. ...
. . .
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
SAMPLE III.—DODABETTA PIPE LINE.
No Lactose Fermenters.
Total colonies per cc. on agar at 37° C.—130.
Bile salt lactose, medium.
+
-
1 tube of 20 cc. ...
... 1
2 tubes of 10 cc. ... ... ... ...
2
3 „ 5 cc.
... ...
...
...
. . . 3
3 „ 1 cc.
...
... ...
...
. . .
3
3 „ .1 cc.
...
...
...
. . .
. . . 3
3 „ .01 cc.
...
... ...
... ...
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
SAMPLE IV.—TIGER HILL RESERVOIR.
No Lactose Fermenters.
Total colonies per cc. on agar at 37° C.—670.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
...
...
. . .
1
2 tubes of 10 cc.
...
...
...
...
. . .
2
3 „ 5 cc. ... ... ...
. . .
3
3 „ 1 cc.
..
...
...
... . . .
3
3 „ .1 cc.
...
...
...
... . . .
3
3 „ .01 cc.
...
...
...
... . . .
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
49
49
SAMPLE V.—TIGER HILL PIPE LINE.
N u m b e r . L a c t o a e .
S a c c h a r o s e .
D u l o i t e .
A d 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 .
I n d o l .
M o d a l i t y .
G r o u p .
Name of Bacilli.
Group and
Remarks.
Total colonies per cc. on agar at 37° C. Nil .
Bile salt lactose, medium.
+
-
tube of 20 co.
. . .
. . .
. . .
. . .
. . .
1
No
. L a c t o s e F e r m e n t e r s
2 tubes of 10 cc.
...
...
...
...
...
2
3
„
5 cc. ... ... ...
. . .
3
3
„
1 cc.
...
...
...
...
...
3
3
„ '1 cc.
...
...
...
. . .
3
3
„ '01 cc,.
...
...
...
. . . 3
Fœoal bacilli not present in 60 cc.
No vibrios in 100 cc.
SAMPLE VI.—MARLIMUND RESERVOIR.
1 +
-
- - - - +
-
I B. Vesiculosus.
Total colonies per cc. on agar at 37° C.—150.
2 + - - - - - + -
I
Do.
... Group 1,10.
3 + -
- - - - + - I
Do.
...
„ II, nil.
Bile salt lactose, medium.
+
_
4 + -
- - - - + - I
Do.
...
„ III, n i l
.
5 + -
- - - - + - I
Do.
...
„ IV, nil.
6 + -
- - - - + - I
Do.
1 tube of 20 cc.
...
...
1
. . .
7 + -
- - - - +
+- I
Do.
8 +
+ - I
Do.
... Class I, nil,
2 tubes of 10 cc.
. . .
...
...
..
. . .
2
9 + - - - - - + - I
Do.
II, nil .
3 „ 5 cc.
...
...
. . . 1
2 10 + -
- - - - + - I
Do.
...
„
III,10.
3 „ 1 . c c
. . .
3
3 „ 1cc.
...
...
...
. . . 1
2
3 „ .01 cc.
...
...
...
. . .
. . .
3
Fœecal bacilli in 20 cc. and upwards.
No vibrios in 100 cc.
SAMPLE VII.—MARLIMUND PIPE LINE.
1
+
-
- - - -
+ - I B. Vesiculusus.
Total colonies per cc. on agar at 37° C.—20.
2 + - - - - - + -
I
Do.
... Group I, 8.
3 + - - - - - + - I
Do.
II, nil.
Bile salt lactose, medium.
+
-
4 + - - - - -
+ - I
Do.
...
„ III, n i l
.
5
+ -
- - - - + - I
Do ...
„
IV,2.
6 4
+- II
Do.
1 tube of 20 cc.
1
. . . 7
+
+-
- - - -
+ -
I
Do.
8 + -
- - - - + - I
Do.
... Class I , nil.
2 tubes of 10 cc ...
...
...
...
. . .
2
9 + - - - - - + - IV B. 106
II, 2.
3 „ 5 cc.
...
...
...
... ...
3 10 + - - - - - + - IV Do.
III,8.
3 „
1 cc.
...
...
...
... ...
3
3 „ •1 cc....
... ... ... ...
3
3 „ .01 cc ...
...
...
... ...
3
Fœecal bacilli in 20 cc. and upwards.
No vibrios in 100 co.
SAMPLE VIII.—KODAPPAMUND RESERVOIR.
No Lactose Fermenters.
Total colonies per cc. on agar at 37° C.—60.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
...
...
. . .
. . .
1
2 tubes of 10 cc.
...
... ...
. . .
. . .
2
3 „
5 cc.
...
...
...
...
. . .
3
3 „ 1 cc.
...
...
... ... ...
3
3
„
'1 c c .
. . .
... . . .
. . .
. . .
3
3 „ '01 cc.
...
...
...
. . . ...
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
51
Physical appearances.
Colour and
Transparency.
SAMPLE VIII.
SAMPLE IX.
Slightly yellowish
but clear.
Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids ... ...
... ...
Parts per 100,000 ...
3.000
4.000
Temporary hardness
...
... ...
Do.
...
Nil.
0.500
Permanent hardness
... ..
Do.
. . .
0.750
1.000
Total hardness
... ...
...
...
Do.
...
0.750
1.500
Chlorine
...
...
...
...
...
Do.
...
0.284
0.355
Ammoniacal nitrogen
...
...
...
Do.
...
Trace.
Trace.
Albuminoid nitrogen.
. . .
Do.
. . .
Trace.
0 . 0 0 3
Oxygen absorbed ( Tidy's Process) ...
Do.
...
0.032
0 . 0 3 2
Nitric Nitrogen ... ... ...
...
Do.
. . .
N i l
.
0 . 0 2 5
QUALITATIVE.
Nitrites
...
...
...
... ...
...
...
...
...
Nil.
Nil
Sulphates ... ... ... ... ...
...
...
...
...
Nil.
Trace.
Phosphates ...
...
...
...
...
...
...
...
...
Nil.
N i l
.
Iron, poisonous metals ...
...
... ...
...
...
...
Nil, nil.
Nil, nil.
53
Chemical Analyses.
SAMPLE I.
SAMPLE II.
Physical appearances.
Colour and
Transparency.
Colourless and clear. Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids ... ...
... ...
Parts per 100,000 ...
41.800
45.000
Temporary hardness ..
... ...
...
Do.
...
20.500
29.500
Permanent hardness ...
...
...
Do.
. . .
5.500
2.500
Total hardness
..
...
...
Do.
....
26.000
3 2 . 0 0 0
Chlorine
... ... ...
... ...
Do.
...
3.550
2.485
Ammoniacal nitrogen
...
...
...
Do.
...
Trace.
Trace.
Albuminoid nitrogen ...
...
...
...
Do.
...
Trace.
Trace.
Oxygen absorbed (Tidy's Process) ... ...
Do.
...
0.016
0 . 0 1 6
Nitric nitrogen
...
..
...
Do.
...
0.037
0.137
QUALITATIVE.
Nitrites
... ...
...
... ...
...
...
...
Nil.
Nil.
Sulphates ... ... ... ... ... ... ... ...
Present.
Present.
Phosphates ... ...
... ...
...
...
...
...
Nil.
Nil.
Iron, poisonous metals ... ...
...
Nil, nil.
Nil, nil.
SAMPLE III.
Physical appearances.
Colour and
Transparency.
Colourless and clear.
Smell.
None.
QUANTITATIVE.
Total solids ... ... ... .. ... ... ..
Parts per 100,000 ...
45.600
Temporary hardness
...
...
...
Do.
...
27.000
Permanent hardness
...
...
...
...
Do.
...
5.000
Total hardness
...
...
...
...
...
Do.
...
32.000
Chlorine ...
...
...
...
...
...
Do.
. . .
2.485
Ammoniacal nitrogen
...
...
...
Do.
...
Trace.
Albuminoid nitrogen
...
...
...
...
...
Do.
...
Trace.
Oxygen absorbed (Tidy's Process)
...
D o .
. . .
0.022
Nitric nitrogen
...
...
.....
...
Do.
...
0.150
QUALITATIVE.
Nitrites
...
...
... ...
...
...
...
...
...
...
Nil.
Sulphates
...
Present.
Phosphates ... ...
... ...
...
.
...
Nil.
Iron, poisonous metals ...
...
...
...
... ...
Nil, nil.
55
REPORT.
The unfiltered water continues to be very bad. The filtered sample at headworks shows
a considerable improvement, fœcal organisms having diminished fiftyfold. In the distributary
system the sample taken at Teppakulam shows obvious signs of pollution on this occasion con-
-firming the prediction made in the previous report that it is defective. Probably there is a
leakage in this part of the pipe system which requires close examination.
Chemically the water has considerably improved though its hard and saline nature together
with the signs of organic pollution points to sub-soil source.
Chemical Analyses.
SAMPLE I.
SAMPLE IV.
Physical appearances.
Colour and
Transparency.
White and
opaque.
Colourless and
clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids ... ...
... ...
... ...
... Parts per 100,000 ...
56.600
49.600
Temporary hardness
...
... ...
. . . ...
Do.
...
18.500
17.000
Permanent hardness
...
... ...
...
...
Do.
. . .
2.500
2. 000
Total hardness
...
...
... ...
...
...
Do.
...
21.000
19.000
Chlorine
... ...
...
. . . ...
. . . . . .
Do.
...
10.650
9.940
Ammoniacal nitrogen
...
...
... ...
...
Do.
...
Trace.
Trace.
Albuminoid nitroge
...
. . .
. . .
. . . ...
Do.
. . .
0.011
0.003
Oxygen absorbed (Tidy' s Process) ...
...
. . . ...
D o .
...
0.064
0.032
Nitric nitrogen
...
...
...
. . . ...
...
Do.
...
0.037
0.050
QUALITATIVE.
Nitrites
. . . ...
... ... ...
... ...
. . . . . .
. . .
. . .
Nil.
Nil.
Sulphates
. . .
. . . ...
. . .
. . .
. . .
. . .
. . . . . . ...
. . .
Present.
Present.
Phosphates ... ...
...
...
. . .
...
...
. . .
. . .
. . .
. . .
Nil.
Nil.
Iron, poisonous metals
. . . ...
. . . ...
...
...
...
. . .
. . . ...
Nil, nil.
Nil, nil.
58
SAMPLE III.
SAMPLE VI.
Physical appearances.
Colour and
Transparency.
White and
opaque.
White and
hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids ... ...
... ...
. "
Parts per 100,000 ...
23.800
12.400
Temporary hardness
Do. . . .
3.500
3.500
Permanent hardness
...
Do. ...
2.500
2.500
Total hardness
...
. . . . . .
Do...
..
6.000
6.000
Chlorine
...
...
...
...
...
Do. ...
1.420
1.065
Ammoniacal nitrogen
... ...
...
Do....
Trace.
T r a c e .
Albuminoid nitrogen
...
...
...
Do. ...
0.012
0.003
Oxygen absorbed ( Tidy's Process) ... ...
...
Do. ...
0.064
0 . 0 1 6
Nitric nitrogen
...
...
...
...
... ..
Do.
N i l .
Nil.
QUALITATIVE.
Nitrites....
...
...
. . .
Nil.
Nil.
Sulphates
...
...
...
... ...
...
. . .
. . .
Present.
Present.
Phosphates ...
... ...
...
...
...
...
...
..
Nil.
Nil.
Iron, poisonous metals
...
...
...
...
...
...
Nil, nil.
Nil, nil.
59
CONJEEVERAM.
WATER SAMPLES TAKEN-9TH SEPTEMBER 1911.
REMARKS.—The river bed of the Vagavati was dry when samples were taken. The supply is intermittent. There has been
about 10.09 inches of rain since last analysis.
Bacteriological Analyses.
SAMPLE I.—TAP IN FRONT OF PUMPING STATION.
Numbe 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 e .
Vo 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 37° C.-50.
Bile salt lactose, medium.
+
-
1 tube of 20 cc.
...
. . .
...
. . .
. . .
1
1 + + - + - + - - IV B. Lactis ærogenes ... Group I, nil,
2 tubes of 10 cc.
...
. . .
. . .
. . . 1
1
2 + + - + - + - - IV
Do.
...
„ II, nil.
3
,,
5 cc.
...
. . .
. . .
. . . ...
3
3 + + - + - + - - IV
Do.
...
„ III, nil.
3
„
1 cc.
...
. . .
. . .
. . .
. . .
3
4 + +
- +
- +
- - IV
Do.
...
,, IV, 10.
3
,,1 cc.
...
...
...
...
...
3
5 + +
- +
- +
- - IV
Do.
3
„ .01cc..
...
. . .
. . .
. . .
...
3
6 + +
- +
- +
- - IV
Do.
Fœcal bacilli present in 60 cc.
7
+
+--- IV
Do.
8 + +
- + - +
- - IV
Do.
... Class I, nil.
9 + +
- + - + - - IV
Do.
...
,,
II,10.
No vibrios in 100 cc.
10 + +
- + - +
- - IV
Do.
...
„ III, nil.
SAMPLE II.—TAP ADJOINING THE SERVICE RESERVOIR.
1
+
-
- - - -
+ -
I B. Vesiculosus.
2
+ -
- - - -
+ -
I
Do.
... Group I,10.
Total colonies per cc. on agar at 37° C.-1,200.
3
+ -
- - - -
+ -
I
Do.
. . .
, , I I , n i l
.
Bile salt lactose, medium.
4
+ -
- - - -
+ -
I
Do.
...
„
I I I , n i l
.
+
_
5
+ -
- - - -
+ -
I
Do.
. . .
, , I V ,
n i l .
6
+ -
- - - -
+ -
I
Do.
7
+ -
- - - -
-
I
Do.
1 tube of 20 cc.
...
. . .
. . . . . .
1
. . . 8
+ -
- - - -
+ -
I
Do.
... Class I,nil.
2 tubes of 10 cc.
...
...
...
...
1
1
9
+ -
- - - - + -
I
Do.
II, nil.
3
,,5 cc.
...
...
. . .
. . .
. . .
3
10
+ -
- - - -
+ -
I
Do.
. . .
,,
I I I , 1 0 .
3
, , 1cc.
...
. . .
. . .
. . .
. . .
3
3
, , . 1cc.
...
. . .
. . .
. . .
. . .
3
3
„
.01 cc.
...
...
...
...
...
3
Fœcal bacilli in 10 cc. and upwards.
No vibrios in 100 cc.
SAMPLE III.—TAP NEAR SEEVARAM TOLL-GATE.
No lactose fermenters.
Total colonies per cc. on agar at 37° C.–130.
Bile salt lactose, medium.
+
—
1 tube of 20 cc.
...
...
. . .
...
...
1
2 tubes of 10 cc.
. . .
...
...
...
. . .
2
3
,,
5 cc,
...
...
...
...
...
3
3
,,
1 cc.
...
...
. . .
. . . ...
3
3
„
.1c c .
. . .
. . .
. . .
...
...
3
3
„
. 0 1 c c .
. . .
. . .
. . .
...
...
3
Fœcal bacilli not present in 60 cc.
No vibrios in 100 cc.
REPORT.
Both bacteriologically and chemically the water continues to be in a high state of purity.
60
SAMPLE I.
SAMPLE III.
Physical appearances.
Colour and
Transparency.
C olourless and clear.
Colourless and clear.
Smell.
None.
None.
QUANTITATIVE.
Total solids ''.
..
..
..
'''
Parts per 100,000 .''
24.000
23.800
Temporary hardness
..
..
'''
Do.
.'.
9.500
9.500
Permanent hardness
...
...
''.
Do.
''.
1.000
1.000
Total hardness
...
.....
Do.
'..
10.500
10.500
Chlorine
'''
..'
...
".
'..
Do.
.''
3.195
3 . 1 9 5
Ammoniacal nitrogen
..
. ..
Do'
T r a c e .
Trace.
Albuminoid nitrogen
...
'''
''.
Do.
.'.
T r a c e .
Trace.
Oxygen absorbed (Tidy's Process) ..'
'..
Do.
. .
0.015
0.015
Nitric nitrogen
..'
..
"'
. .
Do.
'..
0.050
0.050
QUALITATIVE.
60 6
Nit rites
Nil.
Nil.
Sulphates
Present.
Present.
Phosphates ...
'.'
..'
...
..
..
' ' 6
' "
Nil.
Nil.
Iron, poisonous metals
,'.
...
..'
"'
' 6 . ' ' 6
Nil, nil.
Nil, nil.
63
Chemical Analyses.
SAMPLE II .
SAMPLE VI.
Physical appearances.
Colour and
Transparency.
White and opaque.
White and hazy.
Smell.
None.
None.
QUANTITATIVE.
Total solids ...
..
...
...
...
Parts per 100,000 ...
16.000
15.000
Temporary hardness
...
...
...
Do.
...
5.500
5.000
Permanent hardness
...
...
...
Do.
...
1.500
2.000
Total hardness
...
...
...
Do.
...
7.000
7.000
Chlorine
...
...
...
...
...
Do.
...
0.887
0.887
Ammoniacal nitrogen
...
...
...
Do. ...
0 . 0 0 4
Trace.
Albuminoid nitrogen
...
...
Do.
...
0.018
0.007
Oxygen absorbed ( Tidy's Process) ......
Do.
...
0.108
0.068
Nitric nitrogen
...
...
...
...
Do.
. . .
Nil.
Trace.
QUALITATIVE.
Nitrites ... ...
...
...
...
..
... ...
Nil.
Nil .
Sulphates ...
...
...
...
..
..
...
...
Present.
Present.
Phosphates ...
...
...
... ..
...
...
Nil.
Nil .
Iron, poisonous metals
...
...
...
...
...
Nil, nil.
Nil, nil.