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ACCIONA is putting its innovative and technical potential into action to create solutions to water scarcity, sanitation problems, access to this vital resource and increased demand. Water treatment for a sustainable future.

The company leads the water treatment sector through its design, construction and operation of drinking water treatment plants, waste water treatment plants, reverse osmosis desalination plants and tertiary treatments for water reuse, and has reinforced its focus on services for cities.

Water scarcity affects nearly half of the world's population and threatens to spread, driven by global warming. 2,2 million people do not have access to drinking water and 3,5 billion do not have access to basic sanitation. To help solve this problem, ACCIONA explores innovative solutions and applies the latest technologies in water treatment in parallel with the drive to digitize the sector, which it considers essential to bring about more efficient and sustainable water treatment processes.

Our water solutions:

Activity Areas

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Water

Madrid

2026-09-18

Water

Barcelona

2026-09-18

Water

Madrid

2026-09-17

Read the latest news

Water

2026-09-02

Water

2026-08-04

Water

2026-05-18

Read the latest articles

Water

2026-07-27

Water

2026-06-15

Water

2026-05-26

What does waste water treatment consist of?

Learn more about wastewater treatment

What does water purification consist of?

Learn more about water purification

What is desalination and what is it for?

Learn more about desalination

We support the achievement United Nations' Sustainable Development Goals, which address the greatest challenges facing humanity.

Sustainable Development Goals

acciona.org works to make simple changes to communities around the world for a better life. At acciona.org we facilitate access to safe drinking water and sanitation, in an affordable and sustainable way for developing communities.

When reservoirs are full and water seems to be in abundance, headlines about drought disappear from newspapers. However, experts agree that the most important decisions to deal with water scarcity should not be made during crises, but much earlier. Can we take advantage of times when water is readily available to defend ourselves against the next drought?

INFORMATION ON DATA PROTECTION

In compliance with Regulation (EU) 2016/679 on Data Protection and with other Data Protection regulations in force, you are hereby informed that your personal data shall be processed by Acciona, S.A. (hereinafter “ACCIONA”), whose identification data are as follows: Tax ID No. (NIF): A08001851; Address: Avenida de la Gran Vía de Hortaleza, 3, 28033 (Madrid); Tel. No.: +34 91 663 28 50. Your data shall be processed in order to send you information, via electronic means, regarding our services, products, activities, news, and the latest updates related to the sectors of activity within the Acciona ecosystem (Sustainability, Innovation, Experience, and People), through your subscription to our newsletters. We will also process your data in order to respond to your comments and manage your inquiries, requests, complaints, or suggestions.

The consent given by the data subject by indicating that they have read and accept this data protection information comprises the lawfulness of processing. The data provide is your email address. If you fail to provide the required data, the subscription Request cannot be satisfied. We may also process your satisfaction or preferences, if you voluntarily respond to surveys. Data shall be stored until the elimination is requested.

In order to carry out our purpose, we may give access to your data to service providers (such as technology service providers) who assist us in fulfilling this purpose. Some of its service providers, may be located outside of the European Economic Area in territories that do not offer a level of data protection that is comparable to that of the European Union. In such cases, we transfer User data with appropriate safeguards and always ensuring the security of the same.

The data subject can exercise their rights of portability and to access, correct, eliminate, restrict and oppose the processing of their data to Acciona, S.A. by writing the Department of Data Protection located at Avenida de la Gran Vía de Hortaleza, 3, 28033 (Madrid) or by submitting the form available at the following link:

If we consider it necessary in order to be able to identify you, we may ask you for a copy of an identity document. Furthermore, at any time the data subject may withdraw the granted consent by contacting the aforementioned form and file a claim to the Supervisory Authority (Agencia Española de Protección de Datos www.aepd.esopens in a new tab). You can also unsubscribe from the communication.

For any further information you can visit the Privacy Police on the website https://www.acciona.com/privacy-policy/.

Name	Provider	Purpose	Maximum Storage Duration	Type
rc::a	Google	This cookie is used to distinguish between humans and bots. This is beneficial for the website, in order to make valid reports on the use of their website.	Persistent	HTML Local Storage
rc::c	Google	This cookie is used to distinguish between humans and bots.	Session	HTML Local Storage
__cf_bm [x11]	HubSpot hs-banner.com LinkedIn Twitter Inc.	This cookie is used to distinguish between humans and bots. This is beneficial for the website, in order to make valid reports on the use of their website.	1 day	HTTP Cookie
bcookie	LinkedIn	Used in order to detect spam and improve the website's security.	1 year	HTTP Cookie
li_gc	LinkedIn	Stores the user's cookie consent state for the current domain	180 days	HTTP Cookie
affinity	Acciona	Registers which server-cluster is serving the visitor. This is used in context with load balancing, in order to optimize user experience.	Session	HTTP Cookie
CookieConsent	Cookiebot	Stores the user's cookie consent state for the current domain	1 year	HTTP Cookie
cookietest	HubSpot	This cookie is used to determine if the visitor has accepted the cookie consent box.	Session	HTTP Cookie
VISITOR_INFO1_LIVE	YouTube	Tries to estimate the users' bandwidth on pages with integrated YouTube videos.	180 days	HTTP Cookie

Name	Provider	Purpose	Maximum Storage Duration	Type
lidc	LinkedIn	Registers which server-cluster is serving the visitor. This is used in context with load balancing, in order to optimize user experience.	1 day	HTTP Cookie
language	Acciona	Determines the preferred language of the visitor. Allows the website to set the preferred language upon the visitor's re-entry.	Session	HTML Local Storage

Name	Provider	Purpose	Maximum Storage Duration	Type
__hssc	HubSpot	Identifies if the cookie data needs to be updated in the visitor's browser.	1 day	HTTP Cookie
__hssrc	HubSpot	Used to recognise the visitor's browser upon reentry on the website.	Session	HTTP Cookie
__hstc	HubSpot	Sets a unique ID for the session. This allows the website to obtain data on visitor behaviour for statistical purposes.	180 days	HTTP Cookie
_clck	Microsoft	Collects data on the user’s navigation and behavior on the website. This is used to compile statistical reports and heatmaps for the website owner.	1 year	HTTP Cookie
_clsk [x2]	Microsoft	Registers statistical data on users' behaviour on the website. Used for internal analytics by the website operator.	1 day	HTTP Cookie
_ga	Google	Registers a unique ID that is used to generate statistical data on how the visitor uses the website.	2 years	HTTP Cookie
_ga_#	Google	Used by Google Analytics to collect data on the number of times a user has visited the website as well as dates for the first and most recent visit.	2 years	HTTP Cookie
_hjSession_#	Hotjar	Collects statistics on the visitor's visits to the website, such as the number of visits, average time spent on the website and what pages have been read.	1 day	HTTP Cookie
_hjSessionUser_#	Hotjar	Collects statistics on the visitor's visits to the website, such as the number of visits, average time spent on the website and what pages have been read.	1 year	HTTP Cookie
_hjTLDTest	Hotjar	Registers statistical data on users' behaviour on the website. Used for internal analytics by the website operator.	Session	HTTP Cookie
_tt_enable_cookie	TikTok	Used by the social networking service, TikTok, for tracking the use of embedded services.	1 year	HTTP Cookie
hubspotutk	HubSpot	Sets a unique ID for the session. This allows the website to obtain data on visitor behaviour for statistical purposes.	180 days	HTTP Cookie
c.gif	Microsoft	Collects data on the user’s navigation and behavior on the website. This is used to compile statistical reports and heatmaps for the website owner.	Session	Pixel Tracker
_cltk	Microsoft	Registers statistical data on users' behaviour on the website. Used for internal analytics by the website operator.	Session	HTML Local Storage
personalization_id	Twitter Inc.	This cookie is set by Twitter - The cookie allows the visitor to share content from the website onto their Twitter profile.	400 days	HTTP Cookie
dicbo_id	Outbrain	Collects statistics concerning the visitors' use of the website and its general functionality. This is used to optimize and compile reports on the website for comparison through a third party analysis service.	1 day	HTTP Cookie
hs-cta-interactions#cta	Acciona	Collects statistics on the visitor's visits to the website, such as the number of visits, average time spent on the website and what pages have been read.	Persistent	IndexedDB

Name	Provider	Purpose	Maximum Storage Duration	Type
_fbp	Meta Platforms, Inc.	Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers.	3 months	HTTP Cookie
_gcl_au	Google	Used by Google AdSense for experimenting with advertisement efficiency across websites using their services.	3 months	HTTP Cookie
_ttp [x2]	TikTok	Used by the social networking service, TikTok, for tracking the use of embedded services.	1 year	HTTP Cookie
ttcsid	TikTok	Used to track visitors on multiple websites, in order to present relevant advertisement based on the visitor's preferences.	1 year	HTTP Cookie
ttcsid_#	TikTok	Tracks the conversion rate between the user and the advertisement banners on the website - This serves to optimise the relevance of the advertisements on the website.	1 year	HTTP Cookie
tt_appInfo	TikTok	Used by the social networking service, TikTok, for tracking the use of embedded services.	Session	HTML Local Storage
tt_pixel_session_index	TikTok	Used by the social networking service, TikTok, for tracking the use of embedded services.	Session	HTML Local Storage
tt_sessionId	TikTok	Used by the social networking service, TikTok, for tracking the use of embedded services.	Session	HTML Local Storage
MR [x2]	Microsoft	Used to track visitors on multiple websites, in order to present relevant advertisement based on the visitor's preferences.	7 days	HTTP Cookie
MUID [x2]	Microsoft	Used widely by Microsoft as a unique user ID. The cookie enables user tracking by synchronising the ID across many Microsoft domains.	1 year	HTTP Cookie
SRM_B	Microsoft	Tracks the user’s interaction with the website’s search-bar-function. This data can be used to present the user with relevant products or services.	1 year	HTTP Cookie
ANONCHK	Microsoft	Registers data on visitors from multiple visits and on multiple websites. This information is used to measure the efficiency of advertisement on websites.	1 day	HTTP Cookie
SM	Microsoft	Registers a unique ID that identifies the user's device during return visits across websites that use the same ad network. The ID is used to allow targeted ads.	Session	HTTP Cookie
lastExternalReferrer	Meta Platforms, Inc.	Detects how the user reached the website by registering their last URL-address.	Persistent	HTML Local Storage
lastExternalReferrerTime	Meta Platforms, Inc.	Detects how the user reached the website by registering their last URL-address.	Persistent	HTML Local Storage
IDE	Google	Used by Google DoubleClick to register and report the website user's actions after viewing or clicking one of the advertiser's ads with the purpose of measuring the efficacy of an ad and to present targeted ads to the user.	400 days	HTTP Cookie
test_cookie	Google	Used to check if the user's browser supports cookies.	1 day	HTTP Cookie
pagead/1p-user-list/#	Google	Tracks if the user has shown interest in specific products or events across multiple websites and detects how the user navigates between sites. This is used for measurement of advertisement efforts and facilitates payment of referral-fees between websites.	Session	Pixel Tracker
__ptq.gif	HubSpot	Sends data to the marketing platform Hubspot about the visitor's device and behaviour. Tracks the visitor across devices and marketing channels.	Session	Pixel Tracker
unifiedPixel	Outbrain	Collects data on the user’s navigation and behavior on the website. This is used to compile statistical reports and heatmaps for the website owner.	Session	Pixel Tracker
1/i/adsct [x2]	Twitter Inc.	Collects data on user behaviour and interaction in order to optimize the website and make advertisement on the website more relevant.	Session	Pixel Tracker
muc_ads	Twitter Inc.	Collects data on user behaviour and interaction in order to optimize the website and make advertisement on the website more relevant.	400 days	HTTP Cookie
#:session-data	Taboola	Tracks the individual sessions on the website, allowing the website to compile statistical data from multiple visits. This data can also be used to create leads for marketing purposes.	Persistent	HTML Local Storage
eng_mt	Taboola	Tracks the conversion rate between the user and the advertisement banners on the website - This serves to optimise the relevance of the advertisements on the website.	Persistent	HTML Local Storage
t_gid	Taboola	This cookie assigns a specific visitor ID, when the visitor interacts with ads or content from the website - this allows the website to target the visitor with similar ads or content.	1 year	HTTP Cookie
t_pt_gid	Taboola	Collects information on user preferences and/or interaction with web-campaign content - This is used on CRM-campaign-platform used by website owners for promoting events or products.	1 year	HTTP Cookie
taboola global:user-id	Taboola	Sets a unique ID for the visitor, that allows third party advertisers to target the visitor with relevant advertisement. This pairing service is provided by third party advertisement hubs, which facilitates real-time bidding for advertisers.	Persistent	HTML Local Storage
taboola_session_id	Taboola	This cookie is used to collect information on a visitor. This information will become an ID string with information on a specific visitor – ID information strings can be used to target groups with similar preferences, or can be used by third-party domains or ad-exchanges.	Session	HTTP Cookie
guest_id	Twitter Inc.	Collects data related to the user's visits to the website, such as the number of visits, average time spent on the website and which pages have been loaded, with the purpose of personalising and improving the Twitter service.	400 days	HTTP Cookie
guest_id_ads	Twitter Inc.	Collects information on user behaviour on multiple websites. This information is used in order to optimize the relevance of advertisement on the website.	400 days	HTTP Cookie
guest_id_marketing	Twitter Inc.	Collects information on user behaviour on multiple websites. This information is used in order to optimize the relevance of advertisement on the website.	400 days	HTTP Cookie
_gcl_ls	Google	Tracks the conversion rate between the user and the advertisement banners on the website - This serves to optimise the relevance of the advertisements on the website.	Persistent	HTML Local Storage
__Secure-ROLLOUT_TOKEN	YouTube	Used to track user’s interaction with embedded content.	180 days	HTTP Cookie
__Secure-YEC	YouTube	Stores the user's video player preferences using embedded YouTube video	Session	HTTP Cookie
__Secure-YNID	YouTube	Used to track user’s interaction with embedded content.	180 days	HTTP Cookie
LAST_RESULT_ENTRY_KEY	YouTube	Used to track user’s interaction with embedded content.	Session	HTTP Cookie
LogsDatabaseV2:V#\|\|LogsRequestsStore	YouTube	Used to track user’s interaction with embedded content.	Persistent	IndexedDB
TESTCOOKIESENABLED	YouTube	Used to track user’s interaction with embedded content.	1 day	HTTP Cookie
YSC	YouTube	Registers a unique ID to keep statistics of what videos from YouTube the user has seen.	Session	HTTP Cookie
yt-icons-last-purged	YouTube	Necessary for the implementation and functionality of YouTube video-content on the website.	Persistent	HTML Local Storage
YtIdbMeta#databases	YouTube	Used to track user’s interaction with embedded content.	Persistent	IndexedDB

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