I-Arhente yoKhuseleko lokusiNgqongileyo yase-US (EPA) yabhengeza nge-31 kaMatshi ngo-2022 ukuba ayifuni ukulawula i-perchlorate emanzini okusela, igcina isigqibo sayo sikaJulayi 2020. I-EPA yagqiba ukuba isigqibo sangaphambili sasisekelwe kwisayensi engcono kakhulu ekhoyo. indlela ende ukususela Massachusetts waba lelinye lamazwe okuqala ukulawula perchlorate kumanzi okusela ngo 2006. (Jonga Holland & Knight newsletter, "Massachusetts kuqala indulula 2 ppb amanzi okusela kunye nokusulungekiswa umgangatho imichiza perchlorate.") Okumangalisayo kukuba, kwaba ngokukhawuleza kwaye Inyathelo eliqinisekileyo elathathwa ngamaphondo kwiminyaka eyadlulayo ekhokelele i-EPA ukuya ku-2020 yafikelela kwisigqibo sokuba amanqanaba e-perchlorate kokusingqongileyo ehlile ngokuhamba kwexesha kwaye awazange ahlangabezane nemigangatho yolawulo yoMthetho waManzi okuSela aKhuselekileyo (SDWA).
Ukuchaza kwakhona, ngoJuni ka-2020, i-EPA yabhengeza ukuba igqibe kwelokuba iperchlorate ayihambelani nemigangatho yolawulo ye-SDWA njengesingcolisi samanzi okusela, nto leyo erhoxisa isigqibo solawulo sika-2011. (Jonga iHolland & Knight's Energy and Natural Resources Blog, “EPA Finalizes Its Isigqibo se-Perchlorate, nge-23 kaJuni, 2020.) Isigqibo sokugqibela se-EPA sapapashwa nge-21 kaJulayi, 2020. Ngokukodwa, i-EPA yamisela ukuba iiperchlorate azikho “rhoqo kwaye aziqhelekanga.” amanqanaba enkxalabo yezempilo yoluntu ngaphakathi kwentsingiselo yeSDWA” kunye nolawulo I-perchlorate “ayiboneleli ngamathuba anentsingiselo okunciphisa imingcipheko yezempilo kwabo basebenzela iinkqubo zamanzi zikawonke-wonke.”
Ngokukodwa, i-EPA yaphinda yahlola isigqibo solawulo sika-2011 kwaye yaqhuba uhlalutyo oluninzi kwiminyaka edlulileyo yokuvavanya idatha yesiganeko eqokelelwe kuMthetho oNgalawulwayo wokuJonga i-Contaminant Monitoring (UCMR) kunye nolunye uhlolo eMassachusetts naseCalifornia. (Jonga i-Holland & Knight Alert, "EPA Proposes Perchlorate Ukulawula Emva kweminyaka yoPhando, "Juni 10, 2019.) Ukuphonononga kwakhona ngokusekelwe kule datha, i-EPA igqiba ukuba kukho kuphela i-15 elawulwayo yonikezelo lwamanzi oluntu e-US Inkqubo iya kudlula ixabiso elincinci elicetyiswayo (18 µg / L). Ngoko ke , ngokungqinelana neCandelo le-SDWA 1412(b)(4)(C), i-EPA yamisela ukuba, ngokusekelwe kulwazi olukhoyo, iinzuzo zokuseka umgaqo wesizwe we-perchlorate primary wamanzi okusela azithethelela iindleko ezinxulumene noko. Ngexesha lovavanyo lwe-SDWA kunye nenkqubo yokuqulunqa imithetho , i-EPA kufuneka iqinisekise ukuba ummiselo ubonelela ngethuba elinentsingiselo lokunciphisa iingozi zempilo ezinikezelwa yinkqubo yamanzi kawonkewonke ngaphambi kokulawula.
I-Natural Resources Defense Council yakhupha ngoko nangoko ingxelo egxeka isenzo.Ngenxa yesimangalo sayo sangaphambili esiphikisa isigqibo sika-2020, kuya kuhlala kubonakala ukuba eso sigqibo sisiphelo sendlela ngokwenene.hlala ubukele.