US Environmental Protection Agency (EPA) e phatlalalitse ka la 31 Hlakubele 2022 hore ha e rera ho laola perchlorate metsing a nooang, ho boloka qeto ea eona ea Phupu 2020. EPA e ile ea etsa qeto ea hore qeto e fetileng e ne e ipapisitse le mahlale a fumanehang ka ho fetesisa. pele e sisinya 2 ppb metsi a nooang le tlhoekiso e tloaelehileng ea lik'hemik'hale perchlorate. ”) Ho makatsang ke hore ke bohato bo potlakileng le bo tiileng bo ileng ba nkuoa ke linaha lilemong tse fetileng tse ileng tsa etsa hore EPA e fihle ho 2020 e fihletse qeto ea hore boemo ba perchlorate tikolohong bo theohile ha nako e ntse e ea mme ha bo fihlelle litekanyetso tsa taolo tsa Molao oa Metsi a Nooang a Bolokehileng (SDWA).
Ho pheta-pheta, ka Phuptjane 2020, EPA e phatlalalitse hore e entse qeto ea hore perchlorate ha e finyelle litekanyetso tsa taolo ea SDWA e le tšilafalo ea metsi a nooang, ka hona e hlakola qeto ea taolo ea 2011. (Sheba Holland & Knight's Energy and Natural Resources Blog, "EPA Finalizes Its Perchlorate Decision," Phuptjane 201, EPA 201. 2020. Ka ho khetheha, EPA e ile ea etsa qeto ea hore li-perchlorate ha li "khafetsa le hangata." maemo a bophelo bo botle ba sechaba ho latela moelelo oa SDWA" le hore taolo ea perchlorate "ha e fane ka menyetla ea ho fokotsa likotsi tsa bophelo bo botle ho ba sebeletsang tsamaiso ea metsi ea sechaba."
Ka ho khetheha, EPA e ile ea boela ea hlahloba qeto ea taolo ea 2011 'me ea etsa litlhahlobo tse ngata ho theosa le lilemo ho hlahloba lintlha tsa liketsahalo tse bokelitsoeng ho Unregulated Contaminant Monitoring Rule (UCMR) le tlhokomelo e meng ea Massachusetts le California. Ho hlahloba bocha ho ipapisitsoe le lintlha tsena, EPA e etsa qeto ea hore ho na le phepelo ea metsi ea sechaba e laoloang e le 15 feela US. Sistimi e tla feta le boleng bo tlase bo khothaletsoang (18 µg/L). Ka hona, ho latela SDWA Karolo 1412(b)(4)(C), EPA e entse qeto ea hore, ho ipapisitsoe le tlhaiso-leseling e teng, melemo ea ho theha tefiso ea naha ea perchlorate ha e felle feela ho fokotsa litšenyehelo tsa metsi a nooang. mokhoa oa ho laola, EPA e hloka ho fumana hore na taolo e fana ka monyetla o utloahalang oa ho fokotsa likotsi tsa bophelo bo botle tse fanoeng ke tsamaiso ea metsi ea sechaba pele e laola.
Lekhotla la Tšireletso ea Lihloliloeng hang-hang le ile la ntša polelo e nyatsang ketso eo.Ka lebaka la nyeoe ea eona ea pele e hanyetsang qeto ea 2020, ho sa ntse ho tla bonahala hore na qeto eo e fela e le pheletso ea tsela.lula le mametse.