1957-1958 — Page 69

Public Works Department Annual Report 工務司署年報 All AI Reviewed

purpose. Orders have been placed for pumping equipment and pipes, and surveys were carried out to locate service reservoir sites.

Fluoridation

345. The subject of fluoridation was given considerable attention. As a result of inquiries with various manufacturers of suitable equipment, and also as a result of an inspection of a plant already in operation in Singapore, a specification was prepared and manufacturers invited to tender.

Revenue and Expenditure

346. Water accounts were, as usual, sent out quarterly and supplementary and miscellaneous accounts rendered as due. Approximately 236,753 water accounts were dealt with, compared with 219,644 in the previous year. The water rates at $0.80 per unit of 1,000 gallons for trade and domestic supply and $2.00 per unit for shipping and construction purposes remained unchanged.

Future Supplies

347. It was realized that the new Shek Pik Reservoir Scheme would not solve the water problem or permit an unrestricted supply and that there were no other areas left in the Colony where a large reservoir could be formed without interfering unduly with agriculture. The deep well drilling undertaken indicated that underground supplies were negligible, and it was therefore essential to find other sources of supply.

348. The local press carried reports which claimed that new processes had been developed, and that salt water could be made potable relatively cheaply. Inquiries were made, and from the information obtained it seemed that distillation is the most feasible method of treating salt water and that it might be an economic proposition if associated with other heat-using processes. A number of British and foreign manufacturers, who specialize in this type of work, were requested to put forward schemes and quote for supplying equipment capable of producing twenty million gallons per day of potable water from sea water. Four firms submitted draft schemes and one more is awaited.

349. Conditions at some of the coastal areas indicate that it might be possible to convert certain sea inlets into fresh water lakes, and some exploratory work has been undertaken.

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purpose. Orders have been placed for pumping equipment and pipes, and surveys were carried out to locate service reservoir sites. Fluoridation 345. The subject of fluoridation was given considerable attention. As a result of inquiries with various manufacturers of suitable equipment, and also as a result of an inspection of a plant already in operation in Singapore, a specification was prepared and manufacturers invited to tender. Revenue and Expenditure 346. Water accounts were, as usual, sent out quarterly and supplementary and miscellaneous accounts rendered as due. Approximately 236,753 water accounts were dealt with, compared with 219,644 in the previous year. The water rates at $0.80 per unit of 1,000 gallons for trade and domestic supply and $2.00 per unit for shipping and construction purposes remained unchanged. Future Supplies 347. It was realized that the new Shek Pik Reservoir Scheme would not solve the water problem or permit an unrestricted supply and that there were no other areas left in the Colony where a large reservoir could be formed without interfering unduly with agriculture. The deep well drilling undertaken indicated that underground supplies were negligible, and it was therefore essential to find other sources of supply. 348. The local press carried reports which claimed that new processes had been developed, and that salt water could be made potable relatively cheaply. Inquiries were made, and from the information obtained it seemed that distillation is the most feasible method of treating salt water and that it might be an economic proposition if associated with other heat-using processes. A number of British and foreign manufacturers, who specialize in this type of work, were requested to put forward schemes and quote for supplying equipment capable of producing twenty million gallons per day of potable water from sea water. Four firms submitted draft schemes and one more is awaited. 349. Conditions at some of the coastal areas indicate that it might be possible to convert certain sea inlets into fresh water lakes, and some exploratory work has been undertaken. 59 Page 59 Page 59

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purpose. Orders have been placed for pumping equipment and pipes, and surveys were carried out to locate service reservoir sites. Fluoridation 345. The subject of fluoridation was given considerable attention. As a result of inquiries with various manufacturers of suitable equip- ment, and also as a result of an inspection of a plant already in operation in Singapore, a specification was prepared and manufacturers invited to tender. Revenue and Expenditure 346. Water accounts were, as usual, sent out quarterly and supple- mentary and miscellaneous accounts rendered as due. Approximately 236,753 water accounts were dealt with, compared with 219,644 in the previous year. The water rates at $0.80 per unit of 1,000 gallons for trade and domestic supply and $2.00 per unit for shipping and con- struction purposes remained unchanged. Future Supplies 347. It was realized that the new Shek Pik Reservoir Scheme would not solve the water problem or permit an unrestricted supply and that there were no other areas left in the Colony where a large reservoir could be formed without interfering unduly with agriculture. The deep well drilling undertaken indicated that underground supplies were negligible, and it was therefore essential to find other sources of supply. 348. The local press carried reports which claimed that new pro- cesses had been developed, and that salt water could be made potable relatively cheaply. Inquiries were made, and from the information obtained it seemed that distillation is the most feasible method of treating salt water and that it might be an economic proposition if associated with other heat-using processes. A number of British and foreign manufacturers, who specialize in this type of work, were requested to put forward schemes and quote for supplying equipment capable of producing twenty million gallons per day of potable water from sea water. Four firms submitted draft schemes and one more is awaited. 349. Conditions at some of the coastal areas indicate that it might be possible to convert certain sea inlets into fresh water lakes, and some exploratory work has been undertaken. 59 Page

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purpose. Orders have been placed for pumping equipment and pipes, and surveys were carried out to locate service reservoir sites.

Fluoridation

345. The subject of fluoridation was given considerable attention. As a result of inquiries with various manufacturers of suitable equip- ment, and also as a result of an inspection of a plant already in operation in Singapore, a specification was prepared and manufacturers invited to tender.

Revenue and Expenditure

346. Water accounts were, as usual, sent out quarterly and supple- mentary and miscellaneous accounts rendered as due. Approximately 236,753 water accounts were dealt with, compared with 219,644 in the previous year. The water rates at $0.80 per unit of 1,000 gallons for trade and domestic supply and $2.00 per unit for shipping and con- struction purposes remained unchanged.

Future Supplies

348. The local press carried reports which claimed that new pro- cesses had been developed, and that salt water could be made potable relatively cheaply. Inquiries were made, and from the information obtained it seemed that distillation is the most feasible method of treating salt water and that it might be an economic proposition if associated with other heat-using processes. A number of British and foreign manufacturers, who specialize in this type of work, were requested to put forward schemes and quote for supplying equipment capable of producing twenty million gallons per day of potable water from sea water. Four firms submitted draft schemes and one more is awaited.

349. Conditions at some of the coastal areas indicate that it might be possible to convert certain sea inlets into fresh water lakes, and some exploratory work has been undertaken.

1957-1958 — Page 69

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