In all of the 18 waterways, researchers
detected atenolol acid (a high - blood - pressure medication component); 5 - methyl - 1H - benzotriazole (a corrosion inhibitor found in dishwasher detergent); caffeine; the insect repellant DEET; gabapentin (an epilepsy medication); metformin (a medication that controls blood sugar); saccharin and sucralose (Splenda).