These cases touch on environmental problems in the Puerto Rican context. To respond, begin with a socio-technical analysis of Puerto Rico. To help, please look at http://cnx.org/content/m14025/latest/. You will find an STS table toward the end of the module in the form of a media file. Click on this file to open tables that describe Puerto Rico in the context of engineering and energy generation.
Super Aqueduct
- In the 1990’s, the San Juan Metro Area suffered chronic water shortages during the summer months. High demand in the Metro Area (which covers about one third of Puerto Rico) coupled with less rain in the summer months was one cause. Decaying and neglected water infrastructure (leaky water lines, illegal taps into the water supply, and silt-filled reservoirs whose water storage capacity had been drastically reduced), high temperatures, and less rain provided the other causes.
- During the late 1990’s, government and water officials debated different options for resolving the problem. First, they imposed a rationing system where water was turned off except for short periods in the morning and evening. This discouraged nonessential uses such as watering lawns and filling swimming pools, but rationing proved unpopular and failed to address the broader, underlying causes.
- Another solution emerged based on moving water from other parts of the island where supply was plentiful and population sparse to the areas of scarcity. Called the Super Aqueduct, this pipeline would transport water from the Rio Grande south of Arcecibo to San Juan and surrounding communities. Objections to the super aqueduct focused around environmental and safety concerns.
- First, taking water from the Rio Grande would reduce the amount of fresh water that flowed into the Arecibo estuary, an ecosystem that emerged where the fresh water of the Rio Grande flowed into the salt water of the Atlantic Ocean. Reducing the flow of fresh water into the estuary would harm the estuary. Moreover, it would accelerate the draining of Puerto Rico’s main aquifer located in the north under the limestone hills that form what is called the Karst region. Highway construction, individual wells and the general decline of the rivers that deliver fresh water to the Atlantic have all drained fresh water from this aquifer which has been replaced by salt water drawn in from the Atlantic.
- Opposition to the Super Aqueduct also raised safety concerns. The aqueduct was designed to deliver up to 100 million gallons of water per day to the San Juan area. This made it essential to design and construct pipes that could contain water running through it at such high pressures. Moreover, it required careful planning in locating the pipeline to make sure that avoided densely populated areas. To dramatize this, a section of pipeline burst during a routine test causing considerable property damage. Fortunately, nobody was at home when a river of water inundated several houses sweeping away heavy appliances such as washing machines, refrigerators, and stoves.
- The Super Aqueduct was constructed and activated in 2002. It is now transporting water to the Metro Area and the chronic water shortages in the summer have stopped.
Windmills
- Kristin Shrader-Frachette classifies energy generation technologies as following either hard or soft paths. (She attributes this distinction to Amory Lovins.) “The hard path is centralized, capital intensive, large scale, complex, and energy intensive.” On the other hand, “the soft path is characterized by decentralization, smaller capital investments, small-scale organizational structures, and less complex, labor-intensive technologies.”
- The windmill project, currently under debate in Puerto Rico, seems to have a foot in each. In its earlier phases, windmill technology walked on the soft path with decentralized ownership, small scale operation, low capital investment, and simple design. But the plan set forth by a private company to build a windmill farm in Puerto Rico has been met with local opposition that seeks to locate it on the hard path.
- The windmills are to be built on a plot of land adjacent to the Dry Forest of Guanica, a fragile nature preserve under the protection of the United Nations and the Puerto Rican government. Some fear that the windmills would kill birds from the many endangered species that have sought refuge in the preserve.
- Others are concerned that the company proposing to build the windmill farm cannot be trusted to remain focused on windmill technology; they fear it will be used as an excuse to industrialize the Guanica/Ensenada areas with harmful environmental and social impacts. Industrialization would disrupt a way of life for residents that dates back to the sugarcane plantations that operated until the early 1970’s.
- The public hearings carried out on the project by the Puerto Rican government were poorly publicized and held in an exclusive resort complex located on the far side of the island, a good day’s drive from the Dry Forest of Guanica. Those already concerned about the environmental impact of the windmill project, now added concerns about their rights of participation and social justice.
- “What,” they ask, “are public officials trying to hide?”
Gas Pipelines
- Puerto Rico depends almost entirely on petroleum to fuel the plants that produce the island’s electricity. In 1992, a project developed by the private company, Cogentrix, to produce electricity and sell steam as a byproduct using cheap and widely available coal was defeated by groups in the Mayaguez area concerned by the plant’s environmental impacts. Both the proponents of the plant and the electric authority predicted chronic shortages and black outs by the turn of the century. These predictions have turned out to be true.
- Moreover, the environmental impact of the oil-dependent generating plants combined with the instability of the world oil market has brought the energy crises to Puerto Rico. The EPA has ordered the Puerto Rico energy authority, called the Autoridad de Energía Eléctrica (AEE), to reduce its dependence on oil for the production of electricity to below 50% by the year 2010.
- To comply, the AEE has turned to natural gas and has begun the construction of a pipeline from the coastal region near Penuelas to electricity plants on the other side of Ponce. The technology surrounding natural gas is sound, safe, and clean. But the location of the pipeline and the environmental and social impact of its construction has caused damage in largely poor communities.
- Residents interviewed state that they were not properly informed that the pipeline would be situated so close to their homes or that the construction would have such a grave impact. They claimed that they were not able to participate in the public hearings held on the pipeline and have been forced to bear an unjust burden of its social and environmental costs.
- Does the use of natural gas delivered to electricity generating plants by means of underground pipelines represent good, sustainable environmental decision-making?
- What should the AEE and the Puerto Rican governmental officials have done differently to anticipate better the social justice concerns of those living near the construction sites of the pipelines?





Photo of the Zoe Colocotroni
