125
about 300 feet on all mains in the built districts. Owing to reclamation works at Yau-Ma-Ti and Mong-Kok-Tsui the houses will soon be at such a distance from the harbour that little help could be obtained from it in case of fire.
ESTIMATE.
The following is an approximate estimate of the cost of the works described:
Catchwater,
Storage Reservoir,
$150,000
6,000
Main to Filter Beds,......
16,000
Filter Beds and Bungalow,
20,000
Main from Filter Beds to Service Reservoir,
72,000
Service Reservoir at Kowloon Tong,
60,000
Connection to and extension of existing distributing system,
55,000
Service Reservoir at Kowloon City,
6,000
Fire hydrants on existing system,
3,000
Purchase of cultivated ground,
5,000
393,000
Allow for value of machinery and pipes to be dispensed with,..
13,000
Total,
$380,000
To make a fair comparison between the cost of this and the cost of a pumping scheme such as that hitherto existing, the annual expenditure on maintenance must be taken into account. If this be capitalized at 5 per cent. we arrive at the following results:-
Supply,
Existing Works.
232,000 gallons a day.
Original cost,
Capitalized cost of maintenance,
$ 128,000
Cost of supply per million gallons, per day,
$ 120,000 $1,070,000
Proposed Gravitation Scheme,
Supply,
590,000 gallons a day.
Cost of existing works to be utilized,
Estimated cost of new works,................
Estimated cost of maintenance (capitalized),
Cost of supply per million gallons, per day,
..$ 90,000
$ 40,000 $860,000
The Service Reservoir, Main and Distribution works, though necessary at once, have been designed to meet the requirements of a much larger supply, and it will consequently be found that when the proposed Reservoir on site No. 2 is constructed and the whole of the sources of supply mentioned in this Report are made available, bringing the total supply up to 1,380,000 gallons a day, the cost per million gallons per day will be considerably more favourable.
The total cost for this supply is cstimated as follows:
Cost of existing work to be utilized,
Estimated cost of works proposed to be constructed immediately,
Estimated cost of future works,--
$380,000
$ 90.000 .$380,000
Storage Reservoir,
$150.000
Catchwater, &c.,
20,000
Main to connect to existing system,
10,000
Filter Beds,
20,000
Extension of distributing system,
30,000
Capitalized cost of maintenance,,
$230,000 ...$ 80,000
Total,.........$780,000
Cost of supply per million gallons, per day,
$570,000
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