[미국] 칼스배드, 담수화 공급량 확대

캘리포니아주 칼스배드(Carlsbad)시 의원회는 지난 2015년 12월 생산에 들어간 대규모 칼스배드 담수화 플랜트에서 생산되는 연간 공급량을 끌어올리기 위해 카운티 수도청과의 30년 간의 계약에 동의했다.

지역 언론인 샌디에고 유니언 트리뷴(The San Diego Union-Tribune)의 보도에 따르면 이번 계약으로 칼스배드의 연간 유통량은 3천200Ml까지 끌어올려질 것으로 보인다. 30년 간의 계약 하에 수도청은 수입된 물과 혼합해 연간 6만Ml의 물을 공급받아 이를 카운티 내의 여러 마을에 판매한다.

 

[원문보기]

 

Carlsbad city ups its supply from desalination on its doorstep

 

The city council of Carlsbad, California has agreed to sign a 30-year contract with the County Water Authority to up its annual supply from the giant Carlsbad desalination plant which began production in December 2015.

 

 According to a report in the local newspaper, The San Diego Union-Tribune,e, the deal will up Carlsbad's yearly off take by 3200 Ml. Under a 30-year contract with the plant signed in 2012, the Water Authority takes 60,000 Ml a year which is blended with imported water and sold to various entities in the county including Carlsbad Municipal Water District.

 

The Union-Tribune reported that Carlsbad council officials had said it was worth paying the high cost of the desalinated water - close to double the price of imported water - to ease its dependence on imported water and loosen mandatory cuts in consumption imposed by the state last year in a bid to tackle severe drought in the region.

 

The new water will not, like the water purchased under the original contract, be pumped 15 km to be added to the Water Authority's distribution network. It will be diverted by a US$ 2.8 million facility direct to Carlsbad. This will reduce transportation costs but initially add a 60% premium to the price of the direct supplied water over the blended water according to the newspaper report.

 

Carlsbad has held off exercising an option to increase its take from the plant until now because of uncertainty over state Water Resources Control Board's plans to declare desalinated water a local supply. It made the declaration in February.

 

That premium cost of the water is expiated to decline as the plant's capital costs and debts are paid off and the cost of imported water increases. The desalinated water is forecast to cost less than imported water in less than 20 years.

 

[출처 = Desalination & Water Reuse / 2016년 4월 19일]