The organisation, which is 60% owned by the government, has issued a tender asking for agencies to submit proposals to work across all aspects of its digital communications strategy.
The brief is divided into three areas: design, usability and accessibility, and digital marketing. The first covers digital strategy and consultancy, information architecture, digital branding and front-end development. The second asks for expertise in ensuring the website is inclusive, relevant and easily navigable. Lastly, the digital marketing part of the brief includes online advertising, SMS and email marketing.
A spokesman for the organisation confirmed it was conducting a procurement-led search to appoint a roster of at least three agencies to work on future projects as they arise.
The four-year contract to handle the Environment Agency's online communications task is worth between £1m and £2m.
In the past, the body has worked with 23Red, which created a campaign backing World Environment Day, as well as digital media consultancy Rufus Leonard.
The Environment Agency website aims to engage a wide range of internet users, from consumers wanting information about issues such as pollution, climate change and flooding, to businesses needing advice and support on how to become more environmentally friendly.