[ 13 1 
„ , , . uld c cc., and Indol forming organisms in 2 cc. and 5 cc. of 
he water The amount of purification by sedimentation is, therefore, in- 
a: ■ f onrl thp water cannot be considered as good. 
UffiC The examinatrons were made during a penod when there were light 
• nnlv and so under favourable conditions. With heavy rams the wate 
"the slfaUow Tmpoundlng reservoir is stirred up and much worse results 
vould no doubt be obtained. 
Amount of Water. 
The water supplied is equivalent to 12* gallons per ^ °f^Tu^ef‘for 
r Kwala LuniDur, but as water is used by the railway, is use 
fusing public latrines and occasionally for watering the roads the actual 
im Tjadd^i^o e b^ng water'much water is rightly used for bathing 
hv nil races especially by the Chinese and Malays. The allowance of water 
is! ttrefore, v P ery sdalZ A minimum of 20 gallons per diem would be 
t0 ° % If this minimum is taken -t stamUird the amount require^ for 
b^ut^Too SSr^LWfng. exclusive of the supply to 
St6a This corresponds' to^rather°more ) than ! mid 4 days supply respectively 
from \h<f service reservoirs and is in great excess of that supplied by the mam 
Exclusive of an)!calculations 3 bi^e!f cm^J^siWe^incre^.^'in^e'population 
the followdng alterations are necessary : 
(A Increased or extra impounding reservoirs. 1 he increase 
need not necessarily be in the same situation as at a lower elevation 
the greater part of the town could be easily supplied. 
/ , increase storage in proximity to the town. 1 he present 
site the reservoir is Ideal but for the town and ra.lwayaserv.ee 
reservoir at a lower elevation would suffice. 
/,. Increase in the filter area. The present rate of filtration is 
( 3 ) i ncred . „ n i r i Up tolerated. Additional hlter 
too high and no increased rate could be tele d water 
supplementary wa er mpp connection with the new supply. 
Ti“ Sdd nev exceed i| gallons per square foot of filter 
the rate snouw ter than that in the Gombak Kiver, 
heKWmother rivers'if passed through efficient filter beds proves 
ou^te satisfactory in other countries. There is no reason why wuh 
such modifications as are found requisite impure waters such as these 
should not be efficiently treated by filtration. 
for the surface of the J>ed and slower rate of filuation. 
