Pennon Group
Water Treatment Technician Day Operator
Get notified of more jobs like this · No spam, ever
How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Powered by Water, Driven by Purpose
South West Water keeps the South West flowing with safe, reliable drinking water and wastewater services across some of the UK’s most stunning landscapes.
We’re proud to be part of Pennon Group, a leader in the UK water sector, working towards a greener future. Our goals? As well as lowering our carbon footprint, we’re working with partners to plant 300,000 trees, restore peatlands and supporting farmers and landowners to improve water quality and wildlife.
Whether you’re starting out or seeking a new challenge, our scale and ambition create opportunities for you to shape your own career.
Ready to make a splash? Join our team today.
About the role
As a Water Treatment Technician, you’ll play an important role in making sure customers receive safe, clean drinking water every day.
Working across water treatment sites, you’ll operate, monitor and maintain treatment processes, plant and equipment to ensure water quality and supply standards are consistently achieved.
This is a varied, practical role where you’ll be problem-solving, carrying out maintenance and testing, and working closely with colleagues across the operation. You’ll also take part in an out-of-hours standby rota, helping us respond when operational issues arise.
What you’ll be doing
- Operating and monitoring water treatment processes, plant and equipment.
- Working closely with the Control Room and following operational procedures.
- Safely handling, storing and using water treatment chemicals.
- Carrying out routine maintenance on plant and instrumentation.
- Collecting water samples and completing on-site water quality testing.
- Maintaining accurate operational records and compliance documentation.
- Completing site, security and reservoir inspections and cleaning activities.
- Responding to alarms, incidents and abnormal operating conditions.
- Supporting planned maintenance and automated maintenance schedules.
- Working safely at height and in confined spaces, with training provided.
- Carrying out reservoir safety and surveillance checks in accordance with the Reservoirs Act 1975.
- Maintaining high standards of safety, compliance and water quality.
Reasons to use Rodeo
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
It searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
What we’re looking for
You’ll be practical, organised and comfortable making decisions in an operational environment. You’ll enjoy working as part of a team while also being confident managing your own workload and changing priorities.
You’ll need:
- GCSEs or equivalent, including Maths and English.
- A full UK driving licence.
- Good IT skills, including Microsoft Office.
- An understanding of health and safety requirements, including COSHH and lone working.
- Strong communication and relationship-building skills.
- Good organisational and problem-solving abilities.
- The ability to make sound decisions in time-critical situations.
- Flexibility to participate in standby and emergency response arrangements.
What’s in it for you?
We want you to feel rewarded for the work you do while having the support and opportunities you need to build your career.
Our benefits include:
- Generous annual leave – Plus bank holidays, with the option to buy or sell leave for greater flexibility.
- Competitive pension scheme – Helping you plan for your future.
- Discretionary bonus – Rewarding your contribution and performance.
- Pennon Perks – Access to thousands of retail discounts and everyday savings.
- Cycle to Work scheme – Supporting healthier and more sustainable travel.
- Employee share schemes – Giving you the opportunity to invest in the future success of the business.
- Employee Assistance Programme – Free and confidential 24/7 support for you and your family.
- Training and development opportunities – Helping you develop your skills, build your career and reach your potential.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
Closing Date: 19th October 2026
We may close this vacancy early if we receive a high volume of applications. We encourage you to apply as soon as possible.
Please note that the successful candidate will be subject to a mandatory DBS check as part of the onboarding process.
Be yourself, we like it that way. Together, we will build a culture of belonging, where inclusion is instinctive. Diversity is our strength and a reflection of our communities. We care, we value everyone, we celebrate uniqueness.
Our core values, which are essential to our success, are:
- Be Rock Solid - Build trust and be trusted. Be the one we all look to and can depend on.
- Be You - We want you to bring your best everyday. Be yourself and make your mark in your individual way.
- Be the Future - Embrace change. Drive Progress. Own the challenge.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Location