How many employees work at Thames Water Utilities?

Thames Water Utilities Ltd. has 7,133 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is 10.3%.

Data source: Revelio Labs Coverage: Global workforce Latest update: September 2025

About Thames Water Utilities

We are the UK’s biggest water and sewerage company with around 15 million customers across London and the Thames Valley. You would be joining a company with an amazing history and an exciting future. We provide clean and take away waste water for almost 25 per cent of the UK population every day – that’s more than 11,000 Olympic size swimming pools worth of clean water and 16,000 pools of waste. We will not compromise on standards which is why we carry out more than 400,000 tests per year on our drinking water. We continue to invest and this year will be spending more than £1 billion to improve our networks and infrastructure – our pipes, sewerage treatment and clean water treatment plants, which are some of the biggest and most advanced sites in Europe. And we will spend the same again next year in our challenge to make sure that if our customers had a choice, they would choose Thames Water. Planning for the future is a key part of our strategy and we already generate enough electricity to power more than 55,000 homes. We also understand the importance of speaking to our youngest customers through our sustainability and education programs in schools and effectively manage and maintain a number of nature reserves. Above all this, Thames Water values its staff as number one and we can now look forward to welcoming you to our team.

As of September 2025

Thames Water Utilities
workforce metrics

Headcount

7.1k

Avg. Salary

$67.7k

Tenure

4.9yr

Growth Rate

10.3%

Hiring Rate

Attrition Rate

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Employee Headcount

Interactive chart of Thames Water Utilities annual worldwide employee count from 2023 to 2025.

  • Thames Water Utilities total number of employees in 2025 was 7,109.651, a 10.3% increase from 2024.
  • Thames Water Utilities total number of employees in 2024 was 6,409.819, a 1.2% decline from 2023.
  • Thames Water Utilities total number of employees in 2023 was 6,370.487, a 0.4% increase from 2022.

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Employee Geographic Breakdown

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Employee Role Breakdown

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Employee Compensation

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Active Job Postings

Interactive chart of Thames Water Utilities annual active job postings from 2023 to 2025.

  • Thames Water Utilities active job postings in 2025 was 606, a 82.8% increase from 2024.
  • Thames Water Utilities active job postings in 2024 was 452, a 107.5% increase from 2023.
  • Thames Water Utilities active job postings in 2023 was 136, a 144.1% decline from 2022.

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Employee Sentiment

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