Trainee Field Hydrometrist

Job Introduction

Trainee Field Hydrometrist

Infrastructure Products Group
Theale / Reading, Berkshire
Full Time | Permanent | Onsite

Hydro International, a CRH Company, is a global leader in advanced water management products, services and expertise. For more than 40 years, we have supported municipal, industrial and construction customers to improve water management performance, reduce environmental impact and protect communities from flooding and water pollution.

Operating in over 40 countries with a global network of over 80 distribution partners, Hydro plays a key role within CRH Infrastructure Products, leading the industry through innovation, sustainability and a strong safety‑first culture.

About the Business

Hydro International – Data Insights & Analysis Ltd (formerly Hydro‑Logic Services) is a specialist UK provider of hydrometric data collection, monitoring and analysis services.

Our work supports flood risk management, environmental protection and water resource planning across the UK. We operate and maintain approximately 1, monitoring sites nationwide, collecting vital data on water levels, flows, rainfall and water quality that directly supports communities and infrastructure.

The Opportunity

We are offering an exciting opportunity for someone looking to start a new career as a Trainee Field Hydrometrist.

This role is ideal for an individual who enjoys working outdoors, wants to learn new technical skills and is keen to build a long‑term career in the water and environmental sector. No previous hydrometry experience is required — full training, mentoring and development will be provided.

You will work as part of our experienced Hydrometry and Monitoring Team, gaining hands‑on experience in field‑based data collection and equipment maintenance across a variety of environments.

What You’ll Be Doing

With training and support, you will learn to:

• Visit monitoring sites to collect data on water flow, depth, rainfall and water quality
• Install, operate and maintain monitoring and telemetry equipment
• Carry out inspections and basic maintenance of monitoring assets
• Work safely in and around rivers, watercourses and outdoor environments
• Follow health, safety and environmental procedures at all times
• Travel to sites as required, with occasional overnight stays
• Work both independently and as part of a supportive team

Who This Role Is For

This role is well suited to someone who:

• Wants to change career or start something completely new
• Enjoys practical, hands‑on work in the outdoors
• Is interested in the environment, water or sustainability sectors
• Is keen to learn technical skills and build a long‑term career

Essential Requirements

• Comfortable working outdoors in all weather conditions
• Able to swim confidently and comfortable working in and around water
• Willing to work at height (e.g. ladders) and in confined spaces (with training)
• Practical, hands‑on approach to work
• Basic computer skills (Microsoft Word and Excel)
• Willingness to travel as required
• Full UK driving licence held for at least 12 months
• A strong awareness of safety and willingness to follow procedures

A degree is not essential for this trainee role — attitude, reliability and willingness to learn are key.

Personal Attributes

• Reliable and dependable
• Motivated and eager to learn
• Flexible and adaptable
• Good communicator
• Able to manage time and work to deadlines
• Team‑focused, with the confidence to work independently

Training & Development

Full training will be provided, including (where required):

• Water safety and water hygiene
• Hydrometric techniques
• Working at height
• Confined space awareness
• First Aid at Work
• Use of specialist monitoring equipment

This role offers clear progression opportunities within Hydro International and the wider CRH group.

What We Offer

• Full training and structured development
• Overtime opportunities
• Pension scheme
• Life assurance
• Sick pay
• Lunch allowance
• Employee Referral Scheme
• Mental Health First Aiders
• 25 days holiday plus Bank Holidays
• Long‑term career progression within a global organisation

Connect Your Future to CRH

At CRH, we believe great careers start with opportunity. We welcome applications from individuals of all backgrounds who are looking to learn, grow and build something new.

To apply or find out more, please contact our recruitment team at:

Benefits may vary depending on role and location.

We’re proud to be part of CRH, and even prouder to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for everyone. If you need any reasonable adjustments during the recruitment process, just let us know, we’re here to support you.

Ready to build your future?

Click ‘Apply’ to get started. Please note: we sometimes close roles early due to high interest, so don’t wait too long!

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