Atenolol
Cities measured
87
Detected in
87 / 87
Highest
0.068 μg/L — Delhi
Overview
Atenolol is a beta-blocker widely prescribed for hypertension and cardiac conditions. It is excreted largely unchanged and is among the most detected cardiovascular drugs in European wastewater. Conventional treatment removes 20–60%.
Health Relevance
In aquatic organisms, beta-blockers can affect heart rate regulation in fish at μg/L concentrations. At drinking water trace concentrations, direct human effects are not documented.
Regulatory Limits
Drinking Water Directive 2020/2184
No EU regulatory limit.
Controversy & Contested Science
Atenolol is part of a broader regulatory gap: the EU Drinking Water Directive (2020/2184) introduced pharmaceutical monitoring (Watch List) without binding limits. Critics argue the Watch List model perpetually defers action — utilities monitor, submit data, and continue discharging pharmaceutically contaminated effluent without consequence. Binding limits require costly treatment upgrades; the absence of limits defers these costs indefinitely. This regulatory design may reflect economic pressure from utilities and member states rather than a genuine assessment of health risk.