3 ottobre 2025|
AI
|2 months agoEnvironmental Alert: 135 Pesticides Found in Swiss Waterways
New national study reveals concerning levels of pesticide contamination in Swiss rivers, with 23 substances exceeding safety thresholds for aquatic life.

AI
Generated IllustrationKey Takeaways
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- A total of 135 different pesticides were detected in five Swiss streams and rivers during a recent national study.
- 23 of the detected pesticides exceeded ecotoxicological quality criteria, posing a direct risk to aquatic organisms.
- Contamination levels for some substances exceeded safety limits by a factor of more than 100.
- The current Water Protection Ordinance only sets limits for 19 pesticides, failing to cover the majority of risks identified.
- Insecticides like fipronil enter rivers via wastewater treatment plants, originating from pet flea and tick treatments.
By The Numbers
135
pesticides detected
23
substances exceeding safety limits
>100x
limit exceedance factor
253
substances analyzed
They Said
"The active ingredient can adhere to hands, animal hair and textiles and thus enter the wastewater treatment plant and watercourses during washing."