In this project the release of 15 pharmaceuticals from three different WWTPs into three different recipients inKristianstad Municipality, Region Skåne was investigated. All three WWTPs are situated within the borders of thefirst UNESCO Biosphere Reserve in Sweden, Kristianstads Vattenrike – “Vattenriket®”, established in 2005. Pharmaceutical included were: 1. Atenolol 2. Azithromycin 3. Carbamazepine 4. Ciprofloxacin 5. Clarithromycin 6. Diclofenac 7. Erythromycin 8. Estrone 9. Ibuprofen 10. Naproxen 11. Metoprolol 12. Propranolol 13. Oxazepam 14. Paracetamol 15. Sulfamethoxazole