Old Swan Water Hardness & Quality Report (2026)

United Utilities supplies water to Old Swan residents from two primary sources: the Thirlmere and Haweswater aqueducts. These vital waterways feed into the Prescot Water Treatment Works, where the water undergoes rigorous purification processes before being distributed to homes and businesses. The system is designed to ensure a safe and reliable supply, drawing from these established reservoirs in the picturesque Lake District.

This water originates from the Lake District's geological makeup. The region is characterized by ancient sedimentary rocks, which contribute to the exceptionally soft nature of the water. Unlike areas with significant limestone or chalk deposits, the geology here means that minerals like calcium and magnesium are not readily dissolved into the water supply, resulting in a low overall mineral content.

Because the water is naturally soft, you'll likely notice less limescale buildup in your appliances, such as kettles and coffee makers. This can lead to improved efficiency and a longer lifespan for these devices. Washing clothes may require less detergent, and you might find that soap lathers more easily. While soft water is generally good for plumbing, some older homes with lead pipes might experience slightly increased leaching of lead if the water is very soft and slightly acidic; however, United Utilities monitors and adjusts water chemistry to prevent this.