Southern Water
Administrative Assistant

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Closing Date
31/07/2026
Job Title: Administrative Assistant
Location: Falmer - Hybrid - 2 office remaining WFH
Contract Type: Fixed term Contract - Ending July 2027
Hours: 37 hours per week
Salary: Up to £30,000 per annum depending on skills and experience
About the role
We are looking for a proactive and detail-focused Administrative Assistant to support our Environmental Leads with pollution incidents and Environment Agency communications.
This is an important role within our environmental function. You will help the team manage case updates, maintain accurate records, and respond to queries in a timely and professional way.
You will also support coordination across pollution cases, contractor activity, and regulatory correspondence. Your work will help the team meet key deadlines and maintain strong standards of documentation.
What you will be responsible for:
- Monitor the Environmental Lead inbox each day, filing emails and attaching them to the correct pollution cases.
- Support Environmental Leads with case updates to the Environment Agency within required response times.
- Respond to general and ad hoc Environment Agency queries in a clear and professional way.
- Help manage contractor invoices, ensuring they are processed accurately and on time.
- Maintain organised records of correspondence, case updates, invoices, and contractor documents.
- Work with technical and operational teams to support accurate case management.
- Identify ways to improve administrative processes, data accuracy, and response times.
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What you’ll bring to the role:
Essential
- Strong organisational and administrative skills.
- Excellent attention to detail, with the ability to manage multiple tasks.
- Good written and verbal communication skills.
- Experience using email, document management, or case management systems.
- Ability to work collaboratively with technical and operational teams.
Desirable
- Experience working in an environmental, regulatory, or operational support role.
- Understanding of environmental processes or pollution case management.
- Experience supporting invoice processing or contractor documentation.
About Southern Water
Southern Water is at the forefront of transforming Britain’s water industry, investing significantly to enhance resilience, sustainability, and service excellence. With £7.8bn planned investment for 2025–30, this is an unparalleled opportunity to join a business committed to delivering a generational shift in the way water services are managed.
You will be joining at a time of significant change, working alongside a skilled team with a clear vision for the future. We offer an environment where people can make a meaningful impact and help deliver long-term value for customers, communities, and the environment.
Inclusion statement
Our mission is to protect and enhance life through water — and we need passionate people to help us achieve it. If you’re inspired by our purpose and believe you can contribute, apply today. You don’t need to meet every criterion; what matters most is your drive to make a difference.


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If this role isn’t quite what you’re looking for but you are keen to be contacted about opportunities at Southern Water, you can register your details here: Introduce Yourself.
Our Commitment to Diversity
We welcome applicants from all backgrounds, identities, and experiences. We do not discriminate based on race, ethnicity, gender, sexual orientation, age, disability, religion, or any other protected characteristic. If you need reasonable adjustments during the recruitment process, please let us know.
Additional information
In line with Southern Water’s security requirements, successful candidates will be required to provide evidence of their identity, eligibility to work in the UK, criminal record check and verification of their employment and/or education history for the past three years.
Appointment to this role is subject to the successful completion of all pre-employment checks, including security vetting. Please note that if a candidate does not meet the required security standards or fails to pass the vetting process, Southern Water reserves the right to withdraw the offer of employment. Some positions may also require higher levels of security vetting, which may involve providing additional documentation.
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