Case Studies

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At Veolia we are always striving to deliver innovative ways to turn waste into a resource for our customers throughout the UK. Click below for some examples of our great work in action.

Dwr Cymru Welsh Water, Herefordshire

Welsh Water is the sixth largest of the ten regulated water and sewerage companies in England and Wales and is responsible for providing over three million people with a continuous, high quality supply of drinking water and for taking away, treating and properly disposing of the wastewater that is produced.

The Challenge

Dwr Cymru Welsh Water are fully committed to delivering best quality service at least possible cost to keep the taps running for 110,000 people in Herefordshire. To meet the demands of the population in the area, the water company challenged Veolia to identify and achieve cost savings throughout the plant by optimising energy, chemical and water losses around the site.

The Solution

Veolia’s optimisation services team worked in collaboration with Dwr Cymru’s operational staff to deliver the entire scope of the optimisation:

Performance modelling:
Data collection and performance modelling using PEARL software. Benchmarking to support business case development.

Trials and monitoring:
On-site optimisation trials and data collection.

Performance monitoring throughout optimisation process to ensure the quality of treatment is not compromised.

Engagement and communication:
Engaging operators, process and site managers to ensure long-term sustainable optimisation.

Site visits and continuous communication with all staff at Dwr Cymru.

The Results

£217,750 Total savings delivered through optimisation over 5 years

£23,000 saved a year by improving Granular Activated Carbon

£3,360annual savings on orthophosphoric acid consumption

  • £11,460 annual savings on aluminium sulphate
  • Additional £79,000 of potential savings over 5 years
  • Enables continuous supply of drinking water to over 110,000 people
  • ​Ensures the highest water quality standards are achieved

Veolia’s ability to benchmark performance and engage effectively with front line operations personnel, Dwr Cymru Welsh Water was able to make efficiency savings in water, energy and chemical use.


“We have now entered the Sustain phase of our work with Dwr Cymru at Broomy Hill where we will sustain the savings delivered for the next 4 years.”

Mark Wilson, Director - Northern Region, Veolia