hurwitz: the city bought up land around the reservoirs to prevent it from development. it provides assistance to local residents to see that there's no pollution of the reservoirs. it's much more cost effective to prevent pollution and to protect a source of water than to remove it at the drinking water treatment plant. lloyd: what epa said to us was, "you can have an exemption from filtration "if you keep this undeveloped, "and if you can manage the wastewater so that it does not pollute your water supply." and we feel that we've reached the point where we can really keep it clean enough to drink unfiltered for the indefinite future. and new york city is in a small club of cities that actually have that filtration avoidance waiver. narrator: while municipalities are responsible for maintaining systems and source supply, the standards that protect water are established at the federal level. there are two important pieces of federal legislation that were both enacted in the early to mid-1970s. the first was the clean water act, which acts to protect rivers and lakes, and

mitch hurwitz, who created "arrested development," jim vallely and i created this show together.o the fold. >> jimmy: oh, he's hilarious. >> he's a hilarious dude. >> jimmy: david cross is great in it. peter serafinowicz -- >> peter serafinowicz, who's a hilarious dude, who's going to be my bet as a household name here for good reasons. >> jimmy: so good. >> and keri russell. >> jimmy: and keri russell! >> to top it off. >> jimmy: "felicity!" >> "felicity!" >> jimmy: yeah. >> yeah. >> jimmy: she's awesome, by the way. i need more -- i need more keri russell. >> she is one of the most down to -- take it easy. [ laughter ] -- one of the most down to earth -- >> jimmy: i want more. i want a little bit more. >> that bordered on creepy. >> jimmy: it was? [ laughter ] >> yeah. >> jimmy: if you were up in that chair would you yell -- >> "what are you doing, fallon?" [ laughter ] so we're doing this new show, and we decided to, you know, try to do this crazy show about this obnoxious rich guy and this girl and -- who knows. it's a crazy show, but it's a lot of fun. >> jimmy: you're like