Table IV.
Results of the Bacteriological Examination of the Tytum Water Supplies for the year 1921,
Coliform Organisms.
Sample, Date. Rate of filtra-tion. Total Colonies on Agar in 1cc at 37° C. 20 c.c. 10 c.c. 5 c.c. 1 c.c. 0.1 c.c. Enteritidis sporogenes Streptococci. Presence of the Coli group. Unfiltered, 3-1-21. 57 Group IV type in 5 c.c. Filtered, 3-1-21. 4 Absent from 60 c.c. Unfiltered, 1-2-21. 60 Group II present in 10 c.c. Filtered, 1-2-21. 6 Group II and III present in 5 c.c. Unfiltered, 7-3-21. 30 Filtered, 7-3-21. 13 Unfiltered, 1-4-21. 63 Filtered, 4-4-21. Unfiltered, 2-5-21. 63 Filtered, 2-5-21. 11 Unfiltered, 6-6-21. 90 Filtered, 6-6-21. Unfiltered, 4-7-21. 10 330 Filtered, 4-7-21. 19 Unfiltered, 8-8-21. Filtered, 8-8-21. ... Unfiltered, 5-9-21. 203 19 965 Filtered, 5-9-21. 17 Unfiltered, 3-10-21. 33 Filtered, 3-10-21. 9 Unfiltered, 7-11-21. 193 + + + + + Group IV. Filtered, 7-11-21. Unfiltered, 5-12-21. 257 + + + + + Group I. Filtered, 5-12-21. 17 + | + [+] { +++ } Group II. +1 +1 +1 +++ 1 + 1 + + + + + 1 ++All samples were taken either immediately before or immediately after filtration. The rate of filtration is given by the Water Authority in gallons per square yard per day. Classification of the Coli group is that of MacConkey, + = Acid and Gas. 1. Acid only, = No Change.
Table IV.
Results of the Bacteriological Examination of the Tytum Water Supplies for the year 1921,
Coliform Organisms.
Sumple,
Date.
Rate of filtra- tion.
Total Colonies
on Agar
in lec at
37° C.
20 c.c. 10 › c.c.]
5 e.c.
1 c.c. 0.1 c.c.
Unfiltered,
3-1-21.
57
Group IV type in 5 c.c.
Filtered,
3-1-21.
4
Absent from 60 c.c.
Unfiltered,
1-2-21.
60
Group II present in 10 c.c.
Filtered,
1-2-21.
6
Group II and III present in 5 c.c.
Unfiltered,
7-3-21.
30
Filtered,
7-3-21.
13
Unfiltered,
1-4-21.
63
Filtered,
4-4-21.
Unfiltered,
2-5-21.
Filtered,
2-5-21.
12
63
11
Unfiltered,
6-6-21.
90
Filtered,
6-6-21.
•
Unfiltered,
4-7-21.
10 330
Filtered,
4-7-21.
19
Unfiltered,
8-8-21.
Filtered, ...
8-8-21.
...
Unfiltered,
5-9-21.
203 19 965
Filtered, ...
5-9-21.
17
Unfiltered,
3-10-21,
33
Filtered,
3-10-21.
9
Unfiltered,
7-11-21.
193
Filtered,
7-11-21.
Unfiltered,
5-12-21.
Filtered,
5-12-21.
17 257 47
+1 +1 +1 +++ 1 + 1 + + + + + 1 ++
+ | + | | [+++ [+ { +++ !+│}
+1 +1
| |+|+|+i+|+] !
+11
Enteritidis
sporogenes
Streptococci.
Presence of the Coli group.
Group IV.
Group I.
+
+
Group II.
Group II.
Group IV.
Group 2 and 3. Group 2 and 3.
All samples were taken either immediately before or immediately after filtration. The rate of filtration is given by the Water Authority in gallons per square yard per day. Classification of the Coli group is that of MacConkey, + = Acid and Gas. 1. Acid only, = No Change.
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