ESTED 668651-2026published across the EU
Machine translation. The official title is Contratación del servicio de explotación, mantenimiento y conservación de las estaciones de depuración de aguas residuales del Ayuntamiento de Siero.
Alcaldía del Ayuntamiento de Siero, based in Pola de Siero (Principado de Asturias), has launched a tender for waste and environment. The contract is estimated at €218,420 and runs for 1 year. The whole job goes out as a single contract, so you need to be able to deliver all of it, either on your own or together with partners.
Because this is an open procedure, any qualified company is welcome to submit a bid. All bid documents must be written in Spanish and must arrive no later than 3 Nov 2026, 14:00.
Written from the facts of the notice. The official notice is the only binding text.
Alcaldía del Ayuntamiento de Siero rarely draws many bidders. Across 6 known contracts, they average only 1.7 bids per tender, well below the national average of 2.5 for this trade, so a well-prepared bid stands a real chance. Their latest award was a €123,967 contract (“Contratación el suministro de material eléctrico con destino al Servicio Eléctr…”), which went to Electricidad Cabielles, S.l., the only bidder. At €218,420, this tender sits well below the typical €485,843 for this trade nationally, which gives smaller firms a better chance than on most contracts of its kind.
We base these figures on the award notices we collect: every one we hold for this buyer, plus the last twelve months of awards in this trade across the country.
Do not lose this contract over a missing document. GroundedBid reads the tender documents and lists what the buyer asks of you, each line with the page it comes from.
A paid service provided by tender.zone.Alcaldía del Ayuntamiento de Siero, Pola de Siero (Principado de Asturias)PLACSP 20768023
Alcaldía del Ayuntamiento de Siero, Pola de Siero (Principado de Asturias)PLACSP 20788419
Alcaldía del Ayuntamiento de Siero, Pola de Siero (Principado de Asturias)PLACSP 20787971
In May 2026 a contract of this buyer went to Electricidad Cabielles, S.l. for €123,967. Only 1 companies applied. This time yours can be one of them.
Aena. Dirección del Aeropuerto de ZaragozaPLACSP 20743947
Departament de Territori, Habitatge i Transició EcològicaPLACSP 20751517
Gobierno Vasco-Dirección de ServiciosPLACSP 20709030
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