Lead in drinking water can enter through plumbing and pipes prone to lead corrosion, especially in cases where the water is acidic, has low mineral content, or exhibits high acidity levels. There are three main sources of lead contamination.
Lead service pipes connect the water main in the street to the internal plumbing of buildings. Historically, lead plumbing was widely used in the UK, though its installation in new systems has been prohibited since the 1970s under UK water byelaws.
Lead solder was once commonly used to join copper pipes and fittings. However, this practice was banned in the UK in 1987 under water supply regulations, which prohibited the use of lead-based solder in potable water systems.
Brass fittings and alloys containing lead are often present in taps and plumbing components. UK regulations, including the Water Supply (Water Quality) Regulations, have progressively tightened restrictions on lead content. Since 1999, the permissible lead content in brass fittings has been limited to 0.25% for components in contact with drinking water.
A full Lead Water Service Replacement involves disconnecting and removing the lead pipe that links the water main to your home’s internal plumbing. Older brass components are typically replaced during this process, though in some cases, they may remain. For instance, an old brass valve (sometimes called a ferrule or stopcock) at the boundary may need to stay in place to avoid disrupting water supply to multiple properties or risking a burst or leak in the main supply pipes.
Reducing corrosion remains a key focus for water companies, yet this alone cannot entirely eliminate lead leaching into drinking water. Even homes with lead-free brass fittings or solder may still detect trace levels of lead in their water supply. However, some properties—particularly older ones—are at greater risk of higher, more hazardous concentrations.
Why Choose AAU LTD?
AAU LTD has pioneered innovative techniques to repipe single-family homes efficiently and cost-effectively, with most projects completed in just one day, minimising disruption and mess.
Our experienced team expertly removes lead to ensure a consistent and safe water supply. Dedicated to excellence, our skilled professionals are committed to meeting our clients’ needs. For residential lead water replacements, we offer a lifetime guarantee—at no extra cost—covering materials, components, and workmanship.
Lead Water Service Replacement may seem daunting, but AAU LTD’s expert services simplify the process for you. Unlike most plumbing firms, which offer a broad range of services such as drain unblocking, water heater repairs, or general maintenance, AAU LTD specialises exclusively in lead water replacements.
We treat every homeowner’s property with the same care we’d give our own, safeguarding furniture, flooring, and personal belongings. Our highly trained staff are equipped to efficiently repair, upgrade, and replace wastewater drainage systems as part of the process.
Contact us today to find out more about our lead water replacement services.
