The reading was six hundred times the safe limit.
En las instalaciones deportivas Orbea de Eibar, una bacteria invisible pero potencialmente letal obligó a cerrar las duchas durante dos meses, después de que una muestra rutinaria revelara niveles de legionela seiscientas veces por encima del umbral de seguridad. Lo que comenzó como un protocolo sanitario de emergencia se convirtió en un espejo incómodo sobre el mantenimiento de los espacios públicos y la responsabilidad de quienes los gestionan. La crisis, resuelta con la reapertura en abril tras confirmar la ausencia bacteriana, deja abierta una pregunta más duradera: ¿cuánto tiempo llevaba el sistema deteriorándose antes de que alguien mirara?
- Una muestra de agua del acumulador del centro deportivo Orbea marcó 60.000 ufc/l, seiscientas veces el límite legal, desencadenando el cierre inmediato de todas las duchas.
- Los usuarios llegaron durante semanas a encontrarse las cabinas precintadas sin explicación pública, mientras la administración municipal guardaba silencio sobre las causas reales.
- La autoridad sanitaria vasca exigió cuatro medidas urgentes: cese de la instalación, notificación a usuarios, desinfección del sistema y verificación posterior mediante nuevas muestras.
- La instalación de un nuevo intercambiador de calor y una hipercloración de choque en marzo permitieron que los análisis de abril confirmaran la ausencia de bacteria y la reapertura de las instalaciones.
- La oposición, EH Bildu, denunció que el gobierno municipal socialista había ocultado un fallo de mantenimiento bajo el silencio institucional, exigiendo rendición de cuentas públicas.
Las duchas del polideportivo Orbea de Eibar permanecieron cerradas desde finales de febrero hasta mediados de abril. La causa era la legionela, una bacteria que prolifera en sistemas de agua caliente y puede provocar neumonías graves al inhalar sus aerosoles. El problema salió a la luz en un muestreo rutinario: una muestra extraída del acumulador de agua registró 60.000 unidades formadoras de colonias por litro, cuando el umbral seguro es de 100 y cualquier valor superior a 1.000 obliga a actuar de inmediato.
La normativa sanitaria española no dejaba margen. La autoridad vasca, a través del consejero de Salud Alberto Martínez, exigió formalmente al centro cuatro acciones: clausurar la instalación, informar a los usuarios, desinfectar el sistema de agua caliente y verificar la eficacia de esa desinfección con nuevas analíticas. El centro respondió con rapidez: instaló un nuevo intercambiador de calor y el 20 de marzo sometió el sistema a una hipercloración de choque. Tras el período de espera reglamentario, el 7 de abril se tomaron nuevas muestras. Los resultados, conocidos el 21 de abril, confirmaron la ausencia de bacteria. Las duchas volvieron a abrirse.
Las autoridades sanitarias subrayaron que la legionela solo representa un riesgo en el punto de uso —los propios grifos y alcachofas de ducha— y que el cierre preventivo había evitado cualquier exposición real durante la remediación. Pero el episodio dejó una herida política. Durante semanas, el gobierno municipal del alcalde socialista Jon Iraola no ofreció ninguna explicación pública sobre el cierre. La oposición de EH Bildu denunció que se había intentado disfrazar un fallo de mantenimiento como una inversión de modernización, y reclamó transparencia. El silencio institucional ante una crisis sanitaria silenciosa reveló, quizás, algo más profundo que un problema de tuberías.
The showers at Eibar's Orbea sports center sat locked for two months. From late February through mid-April, the facility's users found the shower stalls cordoned off, the water lines dead. The reason was legionella—a bacterium that thrives in warm water systems and can cause severe pneumonia in those who inhale it. The contamination had been discovered in routine sampling, and the numbers were alarming enough to warrant immediate action.
On February 23rd, technicians collected water samples from three points in the facility's hot water system. Two of the samples—one from the women's locker room shower and another from the hot water return line—came back inconclusive. But the third sample, drawn from the water accumulator tank, told a different story. It registered 60,000 colony-forming units per liter. To understand what that means: the acceptable threshold is 100 units per liter. Anything above 1,000 requires immediate cleaning and disinfection. This reading was six hundred times the safe limit.
Under Spanish health regulations, such a result triggers a mandatory protocol. The facility's Legionella Prevention and Control Plan had to be reviewed immediately. Corrective measures had to be identified and applied. The water system required cleaning and disinfection. And critically, the showers themselves had to be shut down. The regional health authority, through Basque Country Health Minister Alberto Martínez, issued a formal requirement to the sports center with four specific demands: stop operating the installation due to the potential risk to users, notify all users of the situation, perform immediate cleaning and disinfection of the hot water system, and verify the effectiveness of that disinfection through new testing within the required timeframe.
The facility moved quickly. A new heat exchanger was installed. On March 20th, the system underwent hyperchlorination—a shock treatment of chlorine designed to kill any remaining bacteria. Then came the waiting period mandated by regulation: at least fifteen days had to pass before new samples could be taken to verify the disinfection had worked. On April 7th, technicians collected fresh samples from multiple points in the network. When the results came back on April 21st, they showed the system was clean. The showers reopened.
The health ministry emphasized that legionella poses a risk only to those directly exposed to contaminated water droplets at the point of use—in this case, the shower heads and faucets. Because the facility had closed those points and kept them sealed until the bacteria was confirmed absent, users faced no actual exposure during the remediation period. Still, the incident raised uncomfortable questions about how well the city maintained its public facilities. In March, the opposition party EH Bildu had complained that the Eibar municipal government, led by socialist mayor Jon Iraola, had offered no public explanation for the closure. They demanded urgent clarification and accused the administration of disguising maintenance failures as modernization investments. The two-month shutdown had been a quiet crisis—necessary, but also a sign that something in the system's upkeep had been allowed to slip.
Citas Notables
There existed a potential risk for users of the showers— Basque Country Health Minister Alberto Martínez
The municipal government has converted maintenance problems into actions disguised as investments and modernization— EH Bildu opposition party
La Conversación del Hearth Otra perspectiva de la historia
Why did it take until February to find this? Wasn't anyone monitoring the water?
The samples were routine checks, but yes—the question is how long the bacteria had been building up before anyone tested. That's what makes the 60,000 reading so stark. It didn't get there overnight.
What does legionella actually do to a person?
It causes a severe pneumonia-like illness if you breathe in the contaminated mist from a shower. It's not something you catch from drinking the water. You have to inhale it. That's why closing the showers was the right move—it cut off the exposure route immediately.
Two months is a long time to keep a public facility closed. Did people complain?
The opposition certainly did. They wanted the city to explain what happened and why maintenance had failed. But there's no record of public outcry from users—maybe because the fix was straightforward once they knew what they were dealing with.
What does hyperchlorination actually accomplish?
It's a chemical shock to the system. You flood it with chlorine to kill everything living in there. Then you wait and test again to make sure it worked. In this case, it did.
Is this a common problem in sports facilities?
Legionella in water systems is more common than people realize, especially in places with complex plumbing and warm water. But finding it at 600 times the safe level? That suggests the maintenance schedule had gaps.