According to CW magazine, the Carlsbad desalination plant with large scale and advanced technology in the United States has supplied 1.5 billion gallons of desalinated water to Santiago since its official operation, which has greatly helped alleviate the drought in the city.

In the seawater reverse osmosis desalination system of Carlsbad plant, 2236 composite pressure pipes produced by the American PAA company with the help of winding process are used. CW magazine published a special report entitled "Composite materials for thirst quenching" in February 2013. The total investment of the project is US $1 billion, which is mainly divided into three parts: first, the construction of the desalination plant itself; The second is the upgrading of regional water distribution system; The third is the 10-mile long transportation pipeline connecting the desalination plant and the water distribution system. Carlsbad desalination plant is designed to produce about 70 million cubic meters of fresh water annually, which is enough to supply 400000 people with daily needs. Carlsbad plant uses reverse osmosis technology to produce 10% of water in the region. Its water supply is not affected by weather changes, and the cost of drinking water per gallon is only 0.5 cents. For users, monthly water charges will only rise slightly.