Q. 69
daily supply of 10.92 million gallons per day, a total increase for the year of 409.47 million gallons or 1.12 million gallons per day. The shipping supply consumption was 11.93 million gallons less than last year. Details are shown in Appendix X.
59. Particulars of the quantity of water supplied by meters are given in Appendix X, the total amount being 3,036.16 million gallons. 76.2% of the total consumption has therefore been accounted for by meters compared with 70.1% in 1938.
60. After making allowance for unmetered supplies through public standpipes, cleaning filter beds, mains and services, fires, etc., it is estimated that 84.5% of the total has been accounted for. The balance is mainly due to losses in the distribution system.
Quality of Water.
61. During the year samples of water were examined by the Government Bacteriologist with the following results:-
Raw Water.
Total number of samples examined = 24
Number showing B. C. C. absent in 10 c.c. = 2 = 8.33%
Number showing B. C. C. present in 10 c.c. or less = 22 = 91.7%
Filtered Water Unchlorinated.
Total number of samples examined = 24
Number showing B. C. C. absent in 10 c.c. = 23 = 95.8%
Number showing B. C. C. present in 10 c.c. or less = 1 = 4.2%
Tap Water Filtered and Chlorinated.
Total number of samples examined = 226
Number showing B. C. C. absent in 50 c.c. = 210 = 92.9%
Number showing B. C. C. absent in 10 c.c. = 13 = 5.8%
Number showing B. C. C. present in 10 c.c. or less = 3 = 1.3%
62. During the year the mainland supply was treated with 22,293 lbs. of liquid chlorine which is equivalent to an average admixture of 0.39 of a part per million.
63. The analyses made by the Government Chemist showed that the water was of excellent quality throughout the year.
Waste Detection.
64. 16,043 routine inspections of house services were carried out in this connection during the year and notices to alter or repair defective services served on members of the public in 238 instances.
65. 637 taps were re-washered free of charge.
66. 1,419 fittings supplied by licensed plumbers and a further 330 supplied by the Government Store were tested and stamped.