<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.miaka arobaini baadaye, congress amepita marekebisho mbalimbali ili sdwa, na mashirika ya udhibiti wamepitisha kanuni tata na marefu iliyoundwa na kuzuia migogoro kama janga sasa zinazotokea katika flint, michigan.  <response>: forty years later, congress has passed multiple amendments to the sdwa, and regulatory agencies have adopted complex and lengthy regulations designed to prevent crises like the catastrophe now occurring in flint, michigan. 