Aguas Andinas declares itself on early alert due to high turbidity in the flows of the Maipo and Mapocho rivers which supply the RM


Aguas Andinas reported that it had declared an Early Early Warning (ATP) due to high turbidity events that occurred in the streams of the Maipo and Mapocho rivers, from which the metropolitan region is supplied, and following episodes of convective rain in sectors of the mountain range that caused displacement and flooding this weekend.

The company specified that the supply of drinking water to the city is operating normally, however, it has had to alternately shut down plants, including Padre Hurtado, San Enrique, La Florida, Arrayán and Chamisero, and activate its business continuity plan to strengthen the production of drinking water water in a coordinated and informed manner with the authorities. In doing so, it has made use of the support infrastructures it has implemented as part of its resilience plan to strengthen the city’s autonomy in recent years, including the mega ponds of Pirque and the Pozos de Cerro Negro-Lo Mena. , thus ensuring continuity of supply.

For this the company invites citizens to consume responsibly and conscientiously and communicates that it is monitoring the situation. Faced with any change in the current state, Aguas Andinas will promptly inform through its official channels and RRSS.

Resilience plan

To mitigate the impact of the turbidity of the rivers, the company has developed a plan that allows it to deal with the effects of climate change, such as convective rains, thus strengthening the continuity of supply. This allowed us to go from 4 hours in 2011 to today’s 37 hours of battery life.

The first phase went into operation in 2013, with an investment of 47 billion dollars and the construction of 7 new wells and 14 potable water storage tanks. This phase made it possible to pass from 4 to 9 hours of support in the city.

The second phase started in 2018 and considered a total investment of 15 billion dollars. This allowed Santiago to go from 9 to 11 hours of autonomy. Therefore, it envisaged the setting up of 16 groundwater extraction wells and the construction of 9 potable water storage tanks.

In February 2020, operations began in the Pirque Mega Ponds with an investment of 77.5 billion dollars, which allowed Santiago to go from 11 to 34 hours of autonomy in the face of meteorological emergencies. In seven years, nearly 9 times more resilience was provided to the city.

Finally, in 2022, the Pozos de Cerro Negro-Lo Mena went into operation, an infrastructure for the production of groundwater which added 3 hours of backup.

Aguas Andinas continues to work to provide greater security and support to Santiago, for which various projects are being developed and analyzed which will allow the last phase of the resilience plan to be finalized to achieve 48 hours of supply autonomy, and up to 3 months, including the El Manzano – Pirque project.

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