Dricksvattennormer

Dricksvattennormer are the set of rules and guidelines that govern the quality of drinking water in Sweden. They include legally binding limit values and recommended values designed to protect human health and to ensure that water is safe to drink as well as acceptable in taste, odor, and appearance. The norms cover a range of aspects, including microbiological safety (such as limits on pathogenic organisms and indicator bacteria like E. coli), chemical contaminants (for example nitrate, nitrite, lead, arsenic, cadmium, pesticides), and physical-chemical properties (pH, turbidity, color, odor, taste), as well as the residual disinfectant level in the distribution system.

Regulatory framework and implementation: The drinking water norms are aligned with the European Union’s Drinking Water Directive, which sets minimum standards for member states. National authorities implement and oversee these standards, while municipal and regional water utilities are responsible for operating waterworks, monitoring water quality, and ensuring compliance. Samples are collected from source waters and finished water, analyzed in accredited laboratories, and reported to the authorities and the public. If a norm is exceeded, authorities require corrective actions, such as improvements to treatment processes, protection of sources, or temporary advisories for consumers.

Purpose and impact: The norms are intended to prevent waterborne illness, minimize exposure to contaminants, and maintain public confidence in tap water. They also provide a basis for public reporting and for ongoing improvements in water treatment, source protection, and distribution system management to ensure safe drinking water for the population.