Closing Date

Job Title: Senior Clean Water Modeller                       

Location: Falmer (Hybrid)   - Remote options available                               

Salary: Salary to be discussed at the screening stage

Job Overview

We are looking for an experienced Senior Clean Water Modeller with in-depth expertise in InfoWorks WS Pro to support the development and application of water distribution models. You will play a key role in supporting strategic planning, operational optimisation, leakage reduction, and regulatory compliance across potable water supply networks.

Responsibilities will include:

Model Development & Calibration:

Lead the development, maintenance, and calibration of clean water hydraulic models using InfoWorks WS Pro.

Validate models against telemetry, logger, and flow/pressure test data to ensure model accuracy and reliability.

Operational and Strategic Planning:

Conduct scenario modelling to assess network performance under normal and stress conditions (e.g., peak demand, outage events, contamination response).

Support operational teams with real-time and predictive modelling for pressure management, network reconfiguration, and resilience assessments.

Investment & Growth Planning:

Provide evidence-based modelling for capital investment planning (e.g., mains reinforcement, DMA creation, new development impact).

Collaborate with asset planners and engineers to optimise solutions for WRMP, AMP and business plan programmes.

Water Quality Modelling:

Simulate water age, chlorine decay, and booster performance using WS Pro tools to support water quality risk management.

Analyse impacts of operational changes on service levels, discolouration risk, and compliance with water quality regulations.

Leadership & Innovation:

Mentor and support junior modellers and analysts.

Develop and improve modelling standards, QA/QC procedures, and workflow automation (e.g., Python, SQL).

Champion best practice in data integration, demand forecasting, and digital twin initiatives.

Stakeholder Engagement & Reporting:

Prepare and present clear technical reports and visualisations to internal and external stakeholders.

Engage with operational, planning, GIS, and regulatory teams to align model outcomes with business objectives.

About You

• Understanding of water and wastewater engineering within the UK Water Industry.
• Essential: MEng/BEng/BSc or HNC in Engineering, Environmental, or a related science subject

Package

This role will be full time Monday to Friday 37 hours a week.  

Southern Water operate a hybrid approach to working between our Falmer office and home.

• Company and performance-related bonus

• Generous pension up to 11% company contribution

• 25 days annual leave

• Life assurance equal to 4x salary

• Salary sacrifice electric car scheme (after 6 months service)

• Health Cash Plan

• Full funded eye tests

• Two paid volunteering days a year

• Occupational health service

• Discounts with over 800 popular retailers

• Digital GP service

• Study support may be available for job-related qualifications

• Competitive maternity leave and flexible return to work options

• Cycle to work scheme

• Private medical insurance (Senior Grades only)

Does this opportunity excite you but you're not 100% sure if you meet all the requirements for the role? Or are you concerned that 'normal' office hours aren't possible given your personal circumstances? Whilst we can't accommodate every flexible working request, we'll try to find a practical solution. So why not engage with us and find out more about this role?

Our customers are at the heart of everything we do, because delivering water for life is our core purpose. To achieve this, we need 24/7 support in place to resolve incidents quickly and efficiently. All our employees understand the importance of out-of-hours incident support - because when problems appear, fixing them is our top priority. That's why our people join together and support when and however needed to make sure our customers get the service they deserve. Joining the Southern Water family means you'll become part of our incident support team. During your interview, your manager will speak to you about any incident support rotas that apply to your position.

Privacy Statement:

Please note: If you are an existing Southern Water employee, you will need to confirm within your application that your Manager is aware of your application.

All applicants must be eligible to live and work in the UK. You will need to provide evidence of eligibility (e.g. a passport or long birth certificate and proof of NI) and current proof of address (dated within the last 3 months), will be required as part of the recruitment process. If you do not meet these criteria, your application will not be considered.

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