US Environmental Protection Agency (EPA) e phatlalalitse ka la 31 Hlakubele 2022 hore ha e ikemiselitse 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 fetisisa. tsela e telele ho tloha ha Massachusetts e fetoha e 'ngoe ea linaha tsa pele tsa ho laola perchlorate metsing a nooang ka 2006. (Sheba koranta ea Holland & Knight, "Massachusetts pele e sisinya metsi a nooang a 2 ppb le tlhoekiso e tloaelehileng ea lik'hemik'hale tsa perchlorate.") Ho makatsang ke hore e ne e le eona e potlakileng le khato ea makhaola-khang e ileng ea nkuoa ke linaha lilemong tse fetileng tse ileng tsa lebisa EPA ho 2020 e fihletse qeto ea hore maemo a perchlorate tikolohong a theohile ha nako e ntse e feta mme a sa 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 fihlelle litekanyetso tsa taolo ea SDWA joalo ka tšilafatso ea metsi a nooang, kahoo e hlakotse qeto ea taolo ea 2011. (Sheba Holland & Knight's Energy and Natural Resources Blog, "EPA Finalizes Its Qeto ea Perchlorate," la 23 Phuptjane 2020.) Qeto ea ho qetela ea EPA e phatlalalitsoe ka la 21 Phupu, 2020. perchlorate "ha e fane ka menyetla e molemo ea ho fokotsa likotsi tsa bophelo bo botle ho ba sebeletsang tsamaiso ea metsi ea sechaba."
Ka ho khetheha, EPA e ile ea lekola bocha qeto ea 2011 ea taolo 'me ea etsa litlhahlobo tse ngata ho theosa le lilemo e lekola lintlha tsa liketsahalo tse bokelletsoeng ho tsoa ho Unregulated Contaminant Monitoring Rule (UCMR) le tlhahlobo e 'ngoe Massachusetts le California.(Sheba Holland & Knight Alert, "EPA Proposes Perchlorate Rule After Years of Research,” June 10, 2019.) Ho hlahloba bocha ho latela lintlha tsena, EPA e etsa qeto ea hore ho na le phepelo ea metsi ea sechaba e laoloang e le 15 feela naheng ea US Tsamaiso e tla feta le boleng bo tlase bo khothaletsoang (18 µg/L). , ho latela SDWA Karolo 1412(b)(4)(C), EPA e ile ea etsa qeto ea hore, ho ipapisitsoe le tlhahisoleseding e teng, melemo ea ho theha molao oa naha oa perchlorate primary metsi a nooang ha e lokafatse litšenyehelo tse amanang le tsona.Nakong ea tlhahlobo ea SDWA le mokhoa oa ho etsa melao. , EPA e hloka ho etsa qeto ea hore na molao o fana ka monyetla o utloahalang oa ho fokotsa likotsi tsa bophelo bo botle tse fanoang 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.