Copper is a common material used in plumbing systems. While copper is essential for human health in small amounts, its presence in drinking water can sometimes raise concerns.
How copper enters drinking water
Copper typically enters drinking water through the corrosion of copper pipes and copper pipe fittings. This is particularly likely in older plumbing systems or where the water is slightly acidic, which can cause copper to leach into the water supply.
Although copper is naturally present in all water sources, higher levels usually occur when water has been sitting in copper pipes for extended periods. This can be a concern for homeowners, especially if water is left stagnant overnight or for several days.
To reduce copper levels, it is advisable to flush the water for about 30 seconds before use. This is especially important in the morning or after returning from a holiday. Using copper pipe fittings that meet current safety standards, such as the ones found at https://watkinspowis.co.uk/products/copper-pipe-fittings-and-press-systems/, can also help minimise the risk of copper leaching into your drinking water.
Health considerations and safety standards
According to the UK Government’s Drinking Water Inspectorate, copper levels in drinking water are subject to strict regulations to ensure public health. The legal limit for copper in drinking water is 2mg per litre, a standard that aligns with the World Health Organisation’s guidelines.
At levels below this threshold, copper in drinking water is generally safe and poses no significant health risk. However, when copper concentrations exceed this limit, it can lead to gastrointestinal distress, such as nausea, vomiting and diarrhoea. Regular monitoring and testing of water supplies are essential to ensure that copper levels remain within safe limits.
In summary, while copper pipes and copper pipe fittings are widely used due to their durability and resistance to corrosion, it is important to be aware of how copper can affect drinking water quality. By adhering to safety practices and understanding the regulations in place, you can ensure that your drinking water remains safe and free from excessive copper.