irrelevant_novelty t1_jaxduar wrote on March 4, 2023 at 8:22 PM Reply to TIL Poland uses clams to test their water supply by Zrgaloin I worked water treatment here in Canada. Before releasing wastewater it needs to go through a "Fish Test" where they literally throw fish in a sample and see if the die. Permalink 3
irrelevant_novelty t1_jaxduar wrote
Reply to TIL Poland uses clams to test their water supply by Zrgaloin
I worked water treatment here in Canada. Before releasing wastewater it needs to go through a "Fish Test" where they literally throw fish in a sample and see if the die.