Half of Catalonia has its contaminated aquifers. And the rains are the perfect excuse to do nothing

In January of this year, the Catalan Agència de l’Aigua He updated his data on areas vulnerable to excess nitrates of agroganadera origin. The figures are a jug of cold water (and very polluted): 49.2% of Catalan municipalities They have contamination levels by nitrogen compounds above the legal. That is, 39.9% of the surface of Catalonia. It is a huge problem that does not stop growing, but that the rains of these weeks can end up making invisible. And, at a time when the Government began to be forced to take action, postponing them would be a difficult mistake. Doesn’t it stop growing? As Antonio Cerrillo explainedin 1998 “the percentage of municipalities cataloged with vulnerable area was 21.5%of the total; in 2004, the figure rose to 33.7%; in 2009 it reached 44.2%; in 2015 it was 44.5%.” It is true that some municipalities (three: Blanes, Cubells and Tavertet) have left the list because they have allowed the indicators; But, on the other hand, eight (Corbera d’Ebre, Gavet de la Conca, Jorba, Marçà, Pla de Santa Maria, Perelló, Ponts and Sant Sadurní d’Alcoia have entered). According to the Generalitat, the trend was stable, but “with a slight increase in nitrate pollution in certain areas.” Now the indicators will improve. There is no doubt about that. Above all, because a part of the problem was related to drought. The mechanism is simple: agribusiness contamination filters to the subsoil and there meets the huge aquifer system of the country. If there is a lot of water, those nitrates are diluted and the legal limits are not overcome. If there is not, the alarms jump. Right now, the Catalonia reserves They are at 76.46%, those in Barcelona are at 78.83%and those of Girona (the lowest) to 47.28%. Right now, while I write this, aquifers throughout the country are filling with water and, by pure logic, the situation will improve. However, the rest of the problems persist (or increase). Above all, because you have to keep in mind that those nitrates, Those purines They do not appear alone: ​​they are the result of hyperintensive models of agroganade exploitation. Models that base part of their profitability on Not having to put their negative externalities In the results account. And it is not a strictly Catalan problem (although it is true that it affects especially): according to the citizen network of nitrate measurement, almost 60% of Spanish underground waters is contaminated by nitrates and growing. The matter is such a caliber that also reaches reservoirs and evidences the country’s disastrous water management. In summer 2013, 161 municipalities in Castilla y León They discovered that had been drinking contaminated water for years without knowing it. It’s alone An example of the rosary of problems We have been seeing. All reflect and, above all, take action. Antonio Cerrillo saidthat the Generalitat “prepares an order to review the areas of the territory with groundwater contaminated by nitrates from livestock purines.” But the truth is that we always go with the foot changed. A good example was that of “Royal Decree that establishes rules for sustainable nutrition in agrarian soils“which was approved with more than three years of delay. The same three years that it took to transpose the”European Directive related to the quality of the waters for human consumption“It is our way of doing things. As we said days ago, March rains have given us a historical opportunity to save the country’s aquifers. But it will also give a victory (pyrrhic, but victory after all) to those who manage the problem they can use to leave us in worse situation we have. It’s not The first time what’s happening. Image | Copernicus | Scott Goodwill In Xataka | Spain has been overexpling its aquifers. March rains have given us the historical opportunity to save them

Spain has been superxplying its aquifers. March rains have given us the historical opportunity to save them

In recent years, we have spent hours and hours talking about swamps and reservoir water. And it makes sense: a good part of the country and its economy depend on them. However, if we only talk about reservoirs, we will be forgetting two out of ten Spaniards. And is that Spain is an aquifer country. According to The data of the Ministry of Ecological Transitioncover more than 90% of the national territory. That is between 20,000 and 30,000 cubic hectometers of water that are renewed annually. However, in the last decades we have been systematically overexploitation to the point that a good part of the country is being taken to the edge of technical bankruptcy. March rains give us a historical opportunity to solve this, the question is if we will be able to take advantage of it The clearest example is Doñana … The National Park lost “more than 80% of its marshes compared to the beginning of the 20th century.” However, more than half lost it in the last decade. That gives a clear measure of the voracity of the system: if the overexploitation has been able to denaturalize hectares and hectares of one of the most protected natural places in the country, what will not be happening with the rest? … But there are many more. Above all, because for most of the population what happens in Doñana It is still distant (problematic, rejectable, worryingYeah; but distant). The problem is that many regions depend critically on groundwater and the desiccation of aquifers exposes them to enormous water insecurity. The insecurity of which I speak has a very simple explanation: the agroganadero sector consumes 82.5% of the country’s water. That translates that most of the water passes through fertilized lands. It is not surprising that, according to the citizen network of measurement of nitrates, almost 60% of Spanish underground waters is contaminated by nitrates. If the subsoil is loaded with water, that pollution can be worrying, but is diluted. As soon as the water is scarce, the aquifers become unusable. The real problem is another. For decades, whether by their own decision or by omission, the Spanish authorities have lived back their aquifers. This explains a good part of the disorder and lack of control that surrounds them. Eyes that do not see, illegal irrigation that are allowed. Wwf Spain revealed in 2019 that The four most important aquifers in the country have been sheared for years. And presumably, goes much further. According to the reports of the Geological and Mining Institute“For decades, salinization of Mediterranean and insular Spanish coastal coastal aquifers have been known.” Despite this, “only in a few cases this situation is well managed.” As happens, for example, with the Malaga aquifer of Guadalhorce, Integral studies are missing of the entire aquifer to specify the existing reserves and determine the best extraction strategy “if it exists. Without knowing how much water there is and how that water is the situation becomes impossible to manage accurately. The opportunity of March. When we say that We have been failing for 30 years When preparing for the next drought (and diverting the resources we obtain from the improvement of efficiency to uses that abound in exploitation), we refer This kind of thing: The lack of a really ambitious management framework that recovers, manages and sanctions the aquifers of the country. March 2025 and the huge amount of water He has put in the channels has become a great opportunity to solve this. We have given us time to build these integral studies and make decisions for the future. Hopefully not missing her. Image | Scott Jasechko (via sync) | Niel Baars In Xataka | “In the next ten years, Spain and Latin America will suffer (and much) with water,” Robert Glennon (University of Arizona)

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