'Have you ever wondered how Welsh Water secure a safe drinking water supply to over 1.4 million homes and businesses across Wales, 365 days of the year?

Join CLA Cymru's WaterWise programme for a visit to the Bolton Hill Welsh Water drinking plant near Haverfordwest to go behind the scenes of how Welsh Water secures supply across Pembrokeshire and beyond. Learn how Welsh Water manage their water sources from the reservoirs, rivers and springs in the area to optimise for different weather patterns throughout the year. Tour the equipment used to filter and disinfect 'raw water' until its safe for use. Discuss your questions with Welsh Water technicians.  

CLA Cymru's WaterWise programme runs a programme of visits, workshops and webinars to discuss how farmers and landowners can support river health.' 

A few facts of interest:

Scale & Capacity:
It is the largest water treatment works in the Pembrokeshire supply zone, providing drinking water to over 80,000 customers.

Water Sources:
It is fed by raw water pumped from the Eastern Cleddau (via Canaston Bridge Raw Water Pumping Station) and the Western Cleddau (via Crowhill Raw Water Pumping Station). In addition to domestic tap water, the network supplies raw water to local oil refineries near Milford Haven.

Treatment Process:
• Uses a dissolved air flotation (DAF) plant.
• Rapid gravity filters (RGF).
• Granular activated carbon (GAC) contactor vessels to reduce dissolved organic
          Chlorine contact tanks for final disinfection.

Recent Investments:
• Welsh Water invested £2.4 million into the site to boost water quality and network resilience, as highlighted during a visit by Senedd Member Paul Davies.
• The plant has also undergone historical and ongoing capital enhancements, including an £8 million scheme adding GAC filtration and continuous asset upgrades managed under Drinking Water Inspectorate (DWI).

Personal Protective Equipment required:
• Appropriate footwear: Sturdy boots – No trainers/flip flops/wellies. Please let me know if anyone is without boots. 
• Hi viz jackets – this will be provided to you on the day and must be worn at all times 
• If anyone’s felt unwell in the 24 hours before the visit give me a call to discuss 
• If you’re able to car share to minimise traffic please do