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.

The Water Demand Performance Manager will support the delivery of water demand reduction targets through rigorous performance monitoring, benefit realisation review, and in-year optimisation of demand strategies across South West Water, Bristol Water, Bournemouth Water, SES Water and the Isles of Scilly.

The role sits within the Demand Strategy team, which is responsible for developing and continuously refining strategies to deliver the demand reductions required under the Environment Act, covering leakage, Household (HH) demand and Non‑Household (NHH) demand. The team provides technical leadership, insight and assurance for demand planning over the short, medium and long term (in‑year, AMP period and up to 50‑year horizons).

This role will play a key part in supporting the Water Resources Management Plan (WRMP) demand programme by providing performance evidence, analysis and commentary to inform decision‑making and future investment choices.

What you'll be doing:

• Monitor, analyse and forecast in‑AMP demand activities and performance.

• Own reporting for key demand metrics (DI, PCC and NHH), providing insight, trends and narrative.

• Work with Data and Modeling and other teams to maintain robust, compliant monitoring frameworks and data quality.

• Evaluate demand initiatives, identifying performance issues and recommending adaptations to meet targets.

• Analyse demand and consumption trends to understand drivers and intervention impacts.

• Produce clear reports and presentations for senior leaders, regulators and other stakeholders.

• Maintain auditable documentation and undertake regular data quality assurance.

• Collaborate with internal and external stakeholders to support delivery and implementation.

• Support budget development and cost planning for demand strategy initiatives.

• Contribute to research, continuous professional development and industry knowledge sharing.

What we are looking for:

Essential

• Experience of water demand monitoring, analysis and reporting

• Experience producing reports, presentations and technical documentation for varied audiences

• Knowledge of water resource management practices, regulations and reporting requirements

• Ability to work effectively with cross‑functional teams and external stakeholders

• Strong analytical mindset with excellent attention to detail

• Confident written and verbal communication skills

• Ability to prioritise work and manage multiple, changing demands

• Commitment to continuous learning and professional development

• Willingness and ability to travel across the region and attend national meetings as required

Qualifications

• Degree in a scientific, environmental or numerate discipline

Desirable

• Professional membership of a recognised industry body

• Experience working within a water company or regulated utility

• Ability to interpret complex datasets and clearly communicate insights to non‑technical audiences

What's in it for you:

• Generous holiday allowance plus bank holidays

• A discretionary Bonus

• Jobs need car

• Competitive Contributory Pension

• Share-save Scheme

• Various health benefits

• Wellbeing support programmes

• A range of Group Discounts

• Cycle to Work Scheme

• Financial support services

• And plenty more!

Closing Date: 20th May 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.