The UK’s water utility companies ensure millions of households and businesses have access to clean water and efficient wastewater services. From giants like Thames Water to regional leaders like Wessex Water, these companies are ranked on customer satisfaction, environmental performance, and operational scale. In this article, we highlight the top 10 water utility companies in the UK and showcase how euroloo’s tailored welfare solutions support their critical operations.

What Makes a Top Water Utility Company?

Water utility companies are evaluated on key metrics:

• Customer Satisfaction: Ofwat’s C-MeX scores measure service quality and responsiveness.
• Environmental Performance: The Environment Agency’s EPA assesses pollution, compliance, and sustainability.
• Operational Scale: Revenue and customer base reflect service delivery capacity.
• Innovation: Technologies like AI for leak detection or nature-based wastewater solutions.

Below, we rank the top 10 water utility companies in the UK based on recent industry data.

1. Severn Trent Water

Overview: Serving over 7 million customers in the Midlands and parts of Wales, Severn Trent excels in sustainability.

• Customer Satisfaction: Top five in C-MeX, with 80% query resolution.
• Environmental Performance: 4-star EPA rating, zero serious pollution incidents in 2020.
• Key Projects: Low-temperature wastewater treatment trials.
• Revenue: £1.9 billion (2023).

euroloo’s rapid-deployment toilets support Severn Trent’s maintenance crews during water shutdowns.

2. United Utilities

Overview: Delivering 1.8 billion litres of water daily to North West England, United Utilities prioritizes eco-friendly infrastructure.

• Customer Satisfaction: Top five in C-MeX, strong in efficiency audits.
• Environmental Performance: 4-star EPA rating, 100% sludge disposal compliance.
• Key Projects: Constructed wetlands for storm discharge.
• Revenue: £1.8 billion (2023).

euroloo’s low-emission ecowelfare units enhance United Utilities’ infrastructure repair sites.

3. Wessex Water

Overview: Serving 2.8 million in South West England, Wessex Water leads in customer satisfaction.

• Customer Satisfaction: Top C-MeX score in 2021-22 (83+).
• Environmental Performance: 4-star EPA, 100% wastewater compliance.
• Key Projects: Data analytics for sewer blockage prevention.
• Revenue: £0.6 billion (2023).

euroloo’s sustainable welfare units ensure compliance on Wessex Water’s regional projects.

4. Northumbrian Water

Overview: Serving 2.7 million in North East England and Essex & Suffolk, Northumbrian Water focuses on innovation.

• Customer Satisfaction: Highest C-MeX score in 2023 (83+).
• Environmental Performance: 3-star EPA, 100% sludge compliance.
• Key Projects: “Bin the Wipe” campaign cut blockages by 20%.
• Revenue: £0.8 billion (2023).

euroloo’s temporary toilets support Northumbrian Water during burst main repairs.

5. Scottish Water

Overview: Scotland’s sole provider, serving 2.2 million households with high-quality services.

• Customer Satisfaction: Topped UKCSI in 2021 (83.5).
• Environmental Performance: Recognized for innovation by British Water 2023.
• Key Projects: Manages 46,000 km of water pipes.
• Revenue: £1.3 billion (2023).

euroloo’s rapid-deployment units aid Scottish Water’s rural maintenance projects.

6. Affinity Water

Overview: The UK’s largest water-only supplier, serving 3.5 million in South East England.

• Customer Satisfaction: Mid-tier C-MeX, strong in usage monitoring.
• Environmental Performance: Emphasizes water conservation.
• Key Projects: Business efficiency audits.
• Revenue: £0.3 billion (2023).

euroloo’s compact welfare units are ideal for Affinity Water’s smaller projects.

7. Anglian Water

Overview: Serving 6 million in East Anglia and the East Midlands, Anglian Water leads in water recycling.

• Customer Satisfaction: Mid-tier C-MeX, top-ranked in 2017-18.
• Environmental Performance: 2-star EPA, 99.43% sludge compliance.
• Key Projects: Treats 1 billion litres of wastewater daily.
• Revenue: £1.4 billion (2023).

euroloo’s scalable units support Anglian Water’s infrastructure upgrades.

8. Yorkshire Water

Overview: Serving 5.4 million in Yorkshire, Yorkshire Water invests in technology.

• Customer Satisfaction: 3-star EPA in 2022, lower D-MeX scores.
• Environmental Performance: 2-star EPA, 99.84% sludge compliance.
• Key Projects: AI for sewer blockage detection.
• Revenue: £1.1 billion (2023).

euroloo’s ecowelfare units provide sustainable sanitation for Yorkshire Water’s sites.

9. Thames Water

Overview: The UK’s largest utility, serving 9 million with water and 15 million with sewage services.

• Customer Satisfaction: Lowest C-MeX in 2023 (67).
• Environmental Performance: 2-star EPA, 19 delayed quality schemes.
• Key Projects: Upgrades aging infrastructure.
• Revenue: £2.2 billion (2023).

euroloo’s nationwide toilet deployment supports Thames Water during major incidents.

10. Southern Water

Overview: Serving 4.7 million in South East England, Southern Water focuses on coastal water quality.

• Customer Satisfaction: Bottom C-MeX in 2021-22, improving services.
• Environmental Performance: 2-star EPA, 99.5% wastewater compliance.
• Key Projects: Enhances bathing water quality.
• Revenue: £0.9 billion (2023).

euroloo’s temporary toilets ensure compliance during Southern Water’s planned maintenance.

How euroloo Supports Water Utility Companies

Water utility companies face unique challenges, from emergency repairs to large-scale infrastructure projects. euroloo provides tailored welfare solutions to keep their operations running smoothly:

• Temporary Toilets for Emergencies and Maintenance: We supply portable toilets for water shutdowns, burst water mains, and planned maintenance, ensuring worker and public convenience. Our nationwide network enables rapid deployment to multiple locations for major incidents, minimizing disruption.
• Low-Emission Ecowelfare Units: Our solar-powered ecowelfare units support water infrastructure repairs and maintenance for short- and long-term hires. These sustainable units reduce fuel consumption and CO2 emissions, aligning with utilities’ net-zero goals.
• Nationwide Continuous Service: With depots across the UK, we offer fast delivery and servicing, ensuring compliance with HSE standards on all sites, from rural repairs to urban projects.

Whether it’s a burst main in Yorkshire or a major pipeline upgrade in London, euroloo’s solutions enhance site efficiency and sustainability.

Why These Companies Matter

The top 10 water utility companies in the UK deliver essential services while tackling aging infrastructure and environmental challenges. Their innovation and sustainability efforts drive progress, and euroloo’s welfare solutions ensure their projects stay on track.

Need reliable welfare solutions for your water utility project? Contact us today.