The EU tightens regulations on water resource protection

As of 11 May, the new regulations of the European Union on the protection of surface water and groundwater have officially entered into force, marking one of the bloc’s latest efforts to tighten pollution control and strengthen water resource protection. These amendments relate to three major legal instruments, namely the Water Framework Directive, the Environmental Quality Standards Directive, and the Groundwater Directive.

According to the European Commission, the new regulations update the list of pollutants subject to monitoring on the basis of the latest scientific evidence, while also imposing stricter control measures on numerous substances considered likely to pose risks to the environment and human health.

Notably, the EU has added several PFAS compounds - also referred to as “forever chemicals” due to their extreme persistence and resistance to decomposition - to the list of pollutants subject to control. In addition to PFAS, the updated list also includes pesticides, pharmaceuticals, microplastics, and antimicrobial resistance in aquatic environments. This also marks the first time that EU regulations have addressed microplastics, antimicrobial resistance, and underground ecosystems vulnerable to water pollution. Besides adding new pollutants, the EU has also revised threshold limits for numerous substances that had already been included in previous monitoring lists. Six substances considered no longer to pose risks across the EU due to bans or restrictions on their use will be transferred to the national-level management category.

Another notable development is that the EU will pilot an “effect-based monitoring” approach. Rather than measuring individual pollutants separately, this method assesses the combined impacts of multiple substances on water quality. The new regulations also strengthen cross-border coordination mechanisms among member states, while improving the collection and sharing of water quality data. The European Commission considers that the new approach may enhance the comprehensiveness and effectiveness of monitoring activities amid the growing emergence of new pollutants.

In addition to tightening pollution control, the EU has also adjusted certain regulations in order to reduce administrative burdens on member states, including simplifying reporting obligations and increasing the sharing of monitoring data through digital tools. The new law also allows certain economic activities or infrastructure projects to continue under specific circumstances, provided that environmental and health protection standards are maintained.

European Commissioner for Environment Jessika Roswall stated that the amended regulations would help reduce water pollution caused by PFAS, pesticides, and other hazardous chemicals. “Clean water is essential for human health, the environment, and the economy. It is one of the smartest investments we can make,” she said.

Under the implementation roadmap, EU member states must complete the transposition of the relevant amendments into domestic law by 22 December 2027.