Neither the central government nor most of El Salvador's 262 municipalities have had the capacity to install enough wastewater treatment plants to prevent it from being discharged directly into the environment.
A return to nature is the main solution being promoted by communities and municipalities to avoid the water shortage that threatens to leave Santiago, the capital of Chile, home to more than 40 percent of the 19.5 million inhabitants of this South American country, without water.
The lack of water is so severe in Peru's highlands that farming families are forced to sell their livestock because they cannot feed them. "There is no grass or fodder to feed them," says Fermina Quispe, a Quechua farmer from a rural community located at 4,200 meters above sea level.
Insufficient wastewater treatment systems in El Salvador have taken a toll on the environment and the health of the population for decades, but some municipalities are putting more attention on processing their liquid waste.
Houses with balconies facing the street or the surrounding hills, when they are not hidden behind high walls, reflect a neighborhood where people live on the shore of a lagoon but reject the landscape it offers.
Maribel Ochoa takes less time and spends less money commuting from her home to her work in eastern Mexico City thanks to the use of the electric Cablebus, a cable car that has improved her quality of life since the service began operating two years ago.
The decision reached by Ecuadorians to put an end to oil production in Yasuní National Park, in a popular referendum in August, was a triumph for civil society and a global milestone in environmental democracy. But when it comes to implementation, the result is less promising.
Combining technologies and innovations to take advantage of solar, wind, hydro and biomass potential has made the Finca del Medio farm an example in Cuba in the use of clean energies, which are the basis of its agroecological and environmental sanitation practices.
In addition to being a majestic river - the second longest in South America after the Amazon - the Paraná River is the waterway through which a large part of the area's primary goods are exported. Today, its economic importance has sparked an unexpected diplomatic conflict between Argentina and the countries with which it shares the basin.
At the entrance to the municipality of Paraíso, in the southeastern Mexican state of Tabasco, there is a traffic circle that displays three things that are emblematic of the area: crabs, pelicans and mangroves.
The reuse of treated wastewater in vulnerable rural areas of Chile's arid north is emerging as a new resource for the inhabitants of this long, narrow South American country.
Courage, sadness and impotence are expressed by Mayan indigenous activist Sara López when she talks about the Mayan Train (TM), the Mexican government's biggest infrastructure project, which will cross the town where she lives and many others in the Yucatan Peninsula.
Due to insufficient pressure water does not make it up to Elliot Escobar's house in the Mexican municipality of Matías Romero, where he lives on the second floor, so he pipes it up with a hose from his sister's home, located on the first floor of the house shared by the two families.
A new technology that has arrived in rural villages in El Salvador makes it possible for small farming families to generate biogas with their feces and use it for cooking - something that at first sounded to them like science fiction and also a bit smelly.
The city of Franca is an example of basic sanitation in Brazil. In addition to providing universal treated water and sewage to its 352,500 inhabitants, it extracts biogas from wastewater and refines it to fuel its own vehicles.
Africa is caught in the crosshairs of climate change. Despite contributing just 3-5% of global carbon dioxide emissions, the continent will endure climate change’s destructive impact, including more severe storms, rising temperatures and erratic rainfall in the years ahead that threaten the well-being of hundreds of millions of people.
Zé Pequeno cried when he learned that the heirloom seeds he had inherited from his father were contaminated by the transgenic corn his neighbor had brought from the south. Fortunately, he was able to salvage the native seeds because he had shared them with other neighbors.
At Kampala’s Nakawa market, Lovisa Nabisubi scoops charcoal from a bag and packs it into tins ready for customers. Her bare hands, feet, and clothes are stained black from hours of dealing in this popular household fuel which some equate to “black gold” not just in Uganda but in most of East Africa.
"Anxiety, insomnia and depression have become widespread. We don't sleep well, I wake up three, four times a night," complained Brazilian farmer Roselma de Melo Oliveira, 35, who has lived 160 meters from a wind turbine for eight years.
Simita Devi spent over ten days in a government-run hospital a year ago anxiously watching her critically ill nine-year-old daughter, Gudiya, who was diagnosed with typhoid.
Gudiya was so sick she even went into a coma for a day. Medical staff attending to the child said she contracted the disease from drinking contaminated water.
"The rainwater tanks are the best invention in the world for us," said Maria de Lourdes Feitosa, 46, who recalls the deadly droughts of the past in Brazil's semiarid Northeast region.