While the tap water in most areas of the Costa Blanca is safe to drink, it often has a high chlorine content and a distinct taste due to mineral treatment. In Spain, chlorine is added to the water supply to eliminate bacteria and ensure microbiological safety, as is common in many other European countries and the U.S. The World Health Organization (WHO) considers chlorinated water safe for consumption, and its use significantly reduces the risk of waterborne diseases.

However, due to the mineral composition and taste, many locals and visitors prefer to buy large bottled water canisters (typically 5-8 liters) for drinking and cooking. These are available in supermarkets and special water refill stations. Some households also use water filters to improve the taste while still benefiting from the safety of tap water. Compared to some Northern European countries, where tap water is often sourced from pure natural springs and requires minimal treatment, Spain’s water management prioritizes safety measures suited to the Mediterranean climate and infrastructure.