Brian Barton
El Salvador is facing a water crisis, with 80% of its territory under water stress and over 60% of its available water polluted. The country's rivers are contaminated with untreated wastewater, sewage, industrial waste, and agricultural runoff. The Lempa River, El Salvador's main watercourse, is rapidly degrading, and none of the country's main rivers can be purified for drinking through conventional methods. The Acelhuate River, which flows into the Cerrón Grande reservoir, is heavily polluted with industrial waste, sewage, and agricultural runoff. The Cerrón Grande reservoir is one of the most contaminated bodies of freshwater in Central America, with high levels of heavy metals and banned insecticides. Other rivers in El Salvador, particularly those in agricultural areas, are polluted with pesticides, and the river that drains the capital city of San Salvador is considered too polluted for treatment.
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What You'll Learn
- The Lempa River is polluted and undrinkable
- The Cerrón Grande reservoir is contaminated with sewage and industrial waste
- Pesticides and untreated wastewater pollute rivers and streams
- Mining for metals has tainted water quality
- Poor governance and industrial overexploitation have left communities without water
The Lempa River is polluted and undrinkable
El Salvador's water resources are heavily polluted, with only about 10% of surface water sources being safe to drink. The country's water crisis is a matter of life and death, with the Lempa River being the most critical case of pollution.
The Lempa River is El Salvador's most significant river, supplying about 70% of drinking water to the San Salvador metropolitan area. However, it is now polluted and undrinkable. The river flows from the Guatemalan highlands through Honduras before entering El Salvador in the northwest. The river's journey through three countries means that it is susceptible to pollution from various sources.
One of the main contributors to the river's pollution is untreated wastewater. El Salvador has an almost total absence of municipal wastewater treatment, with 98% of municipal and 90% of industrial wastewater being discharged into rivers without any treatment. This wastewater contains high levels of heavy metals, banned insecticides, cyanide, and toxic algae. The river that drains the capital city of San Salvador is considered so polluted that it is beyond the capability of most treatment procedures.
Agricultural runoff is another significant source of pollution for the Lempa River. Pesticides, particularly DDT in cotton cultivations in the southeastern coastal plains, have contaminated rivers and streams in the principal agricultural areas. Poor governance and industrial overexploitation have also been identified as factors contributing to the river's pollution.
The pollution of the Lempa River has severe consequences for the people of El Salvador. Those living near the river, such as the residents of Potonico, suffer health issues and loss of livelihood due to the contaminated water. The river's pollution also affects the country's hydroelectric power generation, as it flows into the Cerron Grande reservoir located at the foot of El Salvador's biggest hydroelectric dam.
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The Cerrón Grande reservoir is contaminated with sewage and industrial waste
El Salvador is facing a severe water crisis, with a large proportion of its water resources being contaminated. The Cerrón Grande reservoir, the country's largest body of freshwater, is one of the most contaminated water sources in Central America. The reservoir is heavily polluted with sewage and industrial waste, posing a critical challenge to the country's water supply.
The Cerrón Grande reservoir was created by the construction of the Cerrón Grande dam in 1974, which drove El Salvador's largest hydroelectric project. The reservoir covers an area of 135 square kilometers and has become a critical source of water for the country. However, it has been plagued by severe pollution issues.
A 2004 study by the El Salvador Ministry of Environment revealed that the reservoir receives untreated discharges from numerous industrial and agricultural sources. The study identified 54 industrial plants, 55 coffee processing plants, seven sugar mills, and 29 sewer systems discharging directly into the reservoir. The high volume of sewage pipes and industrial effluents has led to the reservoir collecting approximately 3,800 tons of excrement each year, along with dangerous heavy metals such as chromium and lead.
The sedimentation levels in the reservoir have reached alarming heights, estimated at 7 million cubic meters per year. This excessive sedimentation has severely impacted the health of the reservoir, leading to contamination and ecological degradation. The pollution in the Cerrón Grande reservoir is not an isolated incident but reflects the broader challenges El Salvador faces regarding water resource management and pollution control.
The country's surface waters, including rivers and streams, are highly polluted by untreated domestic and industrial wastewater, agricultural runoff, and pesticides. The lack of municipal wastewater treatment infrastructure has resulted in approximately 90% of surface water bodies being contaminated. This has led to a situation where only 10% of surface water is considered safe to drink, and none of the main rivers can be purified through conventional methods. The government's response to the water crisis has been criticized for prioritizing commercial and industrial water use over the needs of impoverished and malnourished communities.
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Pesticides and untreated wastewater pollute rivers and streams
El Salvador is facing a water crisis, with 80% of its territory under water stress and more than 60% of its available water polluted. The country's water situation is on a downward trajectory, with deep droughts, insufficient infrastructure, and water-related waste leaving millions without access to clean water.
Pesticides and untreated wastewater are significant contributors to the pollution of El Salvador's rivers and streams. In agricultural areas, rivers are highly contaminated with pesticides, particularly DDT in cotton cultivations in the southeastern coastal plains. The Río Grande de San Miguel, for example, has been found to contain concentrations of 3.15 mg of DDT per litre of water. The abuse of pesticides, some of which are banned in the developed world, has made farming dangerous in many areas, yet crops continue to be planted. This has resulted in the contamination of local vegetables, which are irrigated and washed with local water, with residue from human faeces.
Untreated wastewater from industrial, agricultural, and domestic sources is also discharged directly into rivers and streams. The Acelhuate River, for example, flows into the Cerrón Grande reservoir, which is overloaded with sewage and industrial waste. A 2004 study found that the waste came from 54 industrial plants, 55 coffee processing plants, seven sugar mills, and 29 sewer systems discharging directly into the reservoir. The river that drains the capital city of San Salvador is considered so polluted that it is beyond the capability of most treatment procedures.
The pollution of El Salvador's rivers and streams has had severe consequences for the environment and public health. It has led to the destruction of plant life and the deaths of fish, birds, and other animals. Human life is also at risk, with children in particular suffering from pesticide poisoning. The water crisis has resulted in water rationing and intermittent supply, leading to an increase in disease and poverty.
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Mining for metals has tainted water quality
El Salvador is facing a severe water crisis, with mining for metals being a significant contributor to the issue. The country's water resources are under immense stress, and mining activities have tainted the quality of water, posing a direct threat to the health and well-being of its citizens.
In 2017, El Salvador made history by becoming the first country in the world to impose a ban on metal mining. This decision was driven by the recognition that mining activities, particularly the extraction of gold and silver, require the use of harmful chemicals like cyanide and vast quantities of water, putting fragile water supplies at risk. The ban was a victory for grassroots groups and environmentalists who had long advocated for the protection of the country's water resources.
However, in a concerning turn of events, El Salvador's congress voted to overturn the ban on metal mining in December 2022. This decision was championed by President Nayib Bukele, who prioritized economic growth and the potential revenue from mining over environmental concerns. The reversal of the ban has sparked fears of increased pollution and environmental degradation, exacerbating the existing water crisis.
The Lempa River, El Salvador's main watercourse, is a critical source of water for over half the population. Mining activities pose a direct threat to this vital waterway. The extraction of gold and silver from ore can contaminate water with harmful chemicals, and the intensive water usage required for mining can deplete water sources, impacting both the quantity and quality of water available for human consumption and agricultural purposes.
The consequences of mining for metals extend beyond the immediate pollution of water sources. Acid mine drainage, a common issue in gold mining, results in the release of harmful metals and substances like arsenic into the environment. This process is irreversible, and its impacts can persist for decades, rendering waterways and surrounding ecosystems uninhabitable. Additionally, the high rock-to-metal ratio in gold mining generates massive volumes of waste, further degrading the environment and threatening the health of nearby communities.
The tainting of water quality due to metal mining in El Salvador has far-reaching implications for the country's present and future. It underscores the delicate balance between economic pursuits and environmental sustainability, highlighting the need for responsible governance and the prioritization of clean water and healthy communities.
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Poor governance and industrial overexploitation have left communities without water
El Salvador is facing a severe water crisis, with 80% of its territory under water stress and over 60% of its available water contaminated. Poor governance, industrial overexploitation, and pollution have left communities without access to water.
The country's most significant river, the Lempa, supplies about 70% of the drinking water for the San Salvador metropolitan area. However, it is rapidly degrading due to pollution from untreated sewage, agricultural and industrial waste, and pesticide use. The river that drains the capital city of San Salvador is considered so polluted that it is beyond the capability of most treatment procedures.
Industrial mining and the overexploitation of aquifers and river basins by multinational corporations have also contributed to the water crisis. These activities, often conducted with minimal governmental interference and regulation, accelerate the depletion of water resources. The lack of government response and proper waste management has worsened the situation, with rivers and streams in agricultural areas highly polluted.
The General Water Law, driven by the Salvadoran government, has been criticized for prioritizing commercial and industrial water use over the needs of poorer communities. The law has failed to address the balance between public and private sectors, neglecting the human right to safe water and sanitation.
The water crisis has severe impacts on the daily lives of Salvadorans. Many are forced to travel long distances to fetch drinking water, and the lack of access to clean water contributes to a cycle of illness and poverty. The situation is so dire that it is fueling unrest and forced displacement, with people seeking to flee the country.
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Frequently asked questions
Many rivers in El Salvador are polluted, including the Lempa River, the country's main watercourse, the Acelhuate River, the Rio Grande de San Miguel, and the river that drains the capital city of San Salvador.
The pollution is caused by a variety of factors, including untreated discharges of agricultural, domestic, and industrial runoff, as well as pesticides and deforestation.
The river pollution has had significant impacts on the environment and people's lives in El Salvador. It has led to a lack of access to clean drinking water, with many people having to leave their homes to fetch drinking water. It has also caused environmental degradation and contributed to a growing water crisis in the country.
There have been some efforts to address the river pollution in El Salvador, such as the Rio Lempa Conservation and Restoration Program, which is funded by the country's successful debt conversion for river conservation. However, there is also resistance from environmentalists and communities who are concerned about the negative impacts of mining and other industrial activities on the country's water resources.
