Wastewater Investigations Lead

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.
Help shape the future of our wastewater environment
We're looking for an experienced and passionate Wastewater Investigations Lead to provide technical and programme leadership across our wastewater investigations portfolio. This is a unique opportunity to influence major environmental improvements, shape future investment decisions, and help protect the rivers, estuaries, bathing waters and coastal environments that matter most to our communities.
Working at the forefront of environmental performance and regulatory delivery, you'll lead complex investigations, collaborate with regulators and technical specialists, and ensure robust evidence is translated into meaningful environmental and operational outcomes.
What you'll be doing:
As Wastewater Investigations Lead, you'll:
Lead and coordinate a portfolio of wastewater and environmental investigations, ensuring delivery to agreed regulatory commitments, budgets and timescales.
Provide technical leadership and assurance across investigation programmes, driving consistency, quality and best practice.
Review and challenge technical methodologies, modelling outputs and investigation findings to ensure they are robust and fit for purpose.
Manage specialist consultants and technical delivery partners to achieve high-quality environmental outcomes.
Build strong relationships with environmental regulators, industry partners and key stakeholders.
Translate complex technical findings into clear recommendations that influence future investment, environmental programmes and strategic planning.
Support the development of long-term plans, including Drainage and Wastewater Management Plans (DWMPs) and future regulatory programmes.
Champion initiatives that reduce the impact of wastewater systems on the natural environment.
What we're looking for:
You'll bring:
Significant experience delivering complex wastewater or environmental investigations.
Experience leading multidisciplinary programmes and consultant-delivered studies.
Strong analytical capability, with experience interpreting environmental data, technical reports and modelling outputs.
Experience working with environmental regulators and external stakeholders.
The ability to influence decision-making through credible technical evidence and recommendations.
A passion for environmental improvement and sustainable outcomes.
Qualifications:
Essential
Degree in Environmental Science, Environmental Engineering, Civil Engineering, Geography, Hydrology or a related discipline.
Strong understanding of wastewater systems and environmental regulation.
Desirable
Chartered status with a relevant professional institution.
Knowledge of WINEP, SOAF, Environment Act investigations and wider water industry regulatory programmes.
Experience supporting DWMP development and/or Price Review submissions.
Why join us?
This is an opportunity to play a leading role in improving environmental performance across the South West. You'll work on some of the industry's most significant environmental challenges, influence future investment decisions, and collaborate with experts across the business, regulatory bodies and the wider water sector.
30 days annual leave + bank holidays
Bonus
Private Healthcare
Company car or cash for car allowance
Competitive contributory pension
Share-save scheme
Health benefits & wellbeing support programmes
Group discounts
Cycle to Work scheme
Financial support services
Development and training opportunities
… and much more!
Closing Date: 5th November 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.

- Division
- South West Water
- Department
- Engineering, Technical and Scientific
- Location
- Exeter (Peninsula House)
- Salary
- £70,000 - £80,000/year
About South West Water
We look after the water and wastewater services for 1.8 million customers across Cornwall, Devon, the Isles of Scilly and parts of Dorset and Somerset.
From treatment and maintenance, to innovation and improvements, we're busy every day finding and fixing leaks, unblocking sewers and going bigger and further in our environmental work to be a company you can be proud of.