▁" f uel ▁add itive ", ▁effective ▁in ▁ 2 0 0 4 . ▁M T BE ▁use ▁is ▁still ▁legal ▁in ▁the ▁state ▁for ▁other ▁industrial ▁uses . ▁ ▁The ▁federal ▁Energy ▁Policy ▁Act ▁of ▁ 2 0 0 5 ▁removed ▁the ▁o xygen ate ▁requirement ▁for ▁reform ulated ▁gas oline ▁and ▁established ▁a ▁renew able ▁fuel ▁standard . ▁The ▁lack ▁of ▁M T BE ▁li ability ▁protection ▁in ▁the ▁law ▁also ▁prompt ed ▁ref in ers ▁to ▁substitute ▁eth an ol ▁for ▁M T BE ▁as ▁a ▁gas oline ▁add itive . ▁ ▁Dr inking ▁water ▁reg ulations ▁E PA ▁issued ▁a ▁drink ing ▁water ▁health ▁advis ory ▁for ▁M T BE , ▁a ▁guidance ▁document ▁for ▁water ▁util ities ▁and ▁the ▁public , ▁in ▁ 1 9 9 7 . ▁The ▁Agency ▁first ▁listed ▁M T BE ▁in ▁ 1 9 9 8 ▁as ▁a ▁candidate ▁for ▁development ▁of ▁a ▁national ▁Max imum ▁Cont amin ant ▁Level ▁( M CL ) ▁standard ▁in ▁drink ing ▁water . ▁As ▁of ▁ 2 0 1 8 ▁E PA ▁has ▁not ▁announced ▁whether ▁it ▁will ▁develop ▁an ▁M CL . ▁E PA ▁uses ▁to x icity ▁data ▁in ▁developing ▁M CL s ▁for ▁public ▁water ▁systems . ▁ ▁California ▁established ▁a ▁state - level ▁M CL ▁for ▁M T BE ▁in ▁ 2 0 0 0 . ▁ ▁See ▁also ▁List ▁of ▁environmental ▁issues ▁Environment al ▁issues ▁in ▁the ▁United ▁States ▁ ▁References ▁ ▁Category : F illing ▁stations ▁▁ ▁Category : Ant