Submitted by Zrgaloin t3_11h30tj in todayilearned
Ratox t1_jarmtzp wrote
Reply to comment by The-Brit in TIL Poland uses clams to test their water supply by Zrgaloin
Definitely worth watching it to clear up any misconception about this news.
helpful__explorer t1_jatbo12 wrote
Short answer is yes they do use clams, but it's one of many water quality and control systems - and isn't foolproof
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