The US Environmental Protection Agency (EPA) yakazivisa muna Kurume 31, 2022 kuti haisi kuronga kudzora perchlorate mumvura yekunwa, ichichengeta sarudzo yaChikunguru 2020. EPA yakagumisa kuti sarudzo yapfuura yakavakirwa pasainzi yakanakisa iripo. kutanga yakurudzira 2 ppb mvura yekunwa uye yekuchenesa yakajairwa kemikari perchlorate. ”) Sezvineiwo, kwaive kukurumidza uye kwakasimba danho rakatorwa nenyika makore apfuura izvo zvakatungamira EPA kusvika 2020 yakagumisa kuti mazinga eperchlorate munharaunda akadzikira nekufamba kwenguva uye haana kuzadzisa zvimiro zveSafe Drinking Water Act (SDWA).
Kuti tidzokorore, muna Chikumi 2020, EPA yakazivisa kuti yakanga yaona kuti perchlorate haina kusangana neSDWA yekudzora miitiro sechinhu chinosvibisa mvura yekunwa, nokudaro ichibvisa sarudzo yekutonga ya2011. (Ona Holland & Knight's Energy and Natural Resources Blog, "EPA Inopedzisa Chisarudzo Chayo chePerchlorate," Chikunguru 201, EPA 201, yekupedzisira. 2020. Kunyanya, EPA yakasarudza kuti maperchlorates "haawanzo uye kazhinji." mazinga ehutano hweveruzhinji mukati mezvinoreva SDWA" uye kuti mutemo weperchlorate "haupi mikana ine musoro yekudzikisa njodzi dzehutano kune avo vanoshandira veruzhinji masisitimu emvura."
Kunyanya, EPA yakaongorora zvakare 2011 regulatory sarudzo uye yakaita ongororo dzakawanda mumakore apfuura ichiongorora chiitiko che data yakaunganidzwa kubva kuUnregulated Contaminant Monitoring Rule (UCMR) uye kumwe kutarisisa muMassachusetts neCalifornia. Kuongorora zvakare zvichibva pane iyi data, EPA inogumisa kuti kune gumi neshanu chete inodzorwa mvura yeruzhinji muUS. Sitimu inotopfuura iyo yakakurudzirwa yepasi kukosha (18 µg/L). Naizvozvo, maererano neSDWA Chikamu 1412 (b) (4) (C), EPA yakatsunga kuti, zvichibva paruzivo rwuripo, mabhenefiti ekutanga iyo yenyika perchlorate yemvura inodiwa hairevi mutengo wemvura yekunwa wakanatswa chete. rulemaking process, EPA inoda kuona kana mutemo unopa mukana une musoro wekudzikisa njodzi dzehutano dzinopihwa neveruzhinji mvura system isati yatonga.
The Natural Resources Defense Council yakabva yangoburitsa chiziviso ichishoropodza chiitiko ichi.Nekuda kwemhosva yayakambomhan'arira yaipikisa mutongo wa2020, zvicharamba zvichionekwa kuti sarudzo iyi iri kupera kwenzira here.garai makatarisa.