10 Surprising Items You Should Never Pour Down the Drain
Medication

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Many people wrongly believe flushing medication is safe. They assume pills dissolve quickly, but this is not the case. Many medicines can pollute water supplies, causing environmental and health risks.
Flushed medications do not vanish. They may remain whole or partially dissolve, contaminating water sources. Filtration systems cannot remove all pharmaceuticals. Drug traces can stay in drinking water, harming aquatic life and affecting people.
Medication in water can disrupt animal hormones, cause reproductive problems, and lower populations. It can also increase antibiotic resistance as leftover antibiotics affect bacteria.