in the remote neighbourhood of san gregorio, one local initiative is tackling the greatest urban challenge in history. the more you look at the water situation in mexico city, the more shocking it is and the more you realize that we have to do something and we have to do it now. - enrique cofounded isla urbana. he has been setting up rainwater harvesting systems throughout the city for about a decade. that's something like 7000 of these low-tech, but very efficient life-changers. mexico city has one of the more complex water problems in the world. first of all, it's very far away from any coast or from any body of water. and it's very high up. we're 2200 meters above sea level here. in a valley, any water that you're potentially going to bring into the city, you'd have to pump entirely uphill and like across the sierra, which is virtually impossible. - at least 250 000 people here aren't even connected to the grid. millions more have scarce access to running water, sometimes just for a few hours a day. many, mostly in poor areas, rely on water delivery trucks for their share of drinking wa

san gregorio 40 woodside 41, boulder creek, 41. hollister's 42 napa airport, 43. sonoma 43 are good friend george mccrae and also carried a low here at six. a.m. was 47 now 58 slept with the windows are wide open. don't scare the neighbors, george. no wind and cloudless a lot of people with the windows open this morning because the lows were so cool. a little bit of fog just kind of worked his way down around monterey santa cruz, that is it. the air aloft is getting warmer. it was all in the forties yesterday. now we're in the fifties. diablo's 50 with the north wind of 41 mph. i just looked at it, but when i show it to you on the air, it disappears. it does that to torment me. but bodega bay 47 water 10 point raised. 48 boom that is cold, cold water. so fog is never far away. when inland tips get into the eighties. no water temps are that cold? fifties on most of the temps couple of those sixties, the city is at 61 temperatures today . 60 seventies coast in bay eighties inland, and the days are very long angle of the sun is high so we can jump up 5 10 degrees fro

so one observation 38 west petaluma 39 point reyes station. 39 san gregorio is 40 woodside 41 half moonw 42 degree reading that's cold for this time of year. we have mostly clear skies a little bit of patchy fog parts of the coast . all those water temps are cold bodega bay still 47 point reyes and 48 degrees that's really cool. san francisco bowie dropped back down to 50 along with monterey, but so i'm not surprised. there's some fog. they're seeing. forties fifties on the tips here. napa airports down to 43 degrees here, 45 wanna creek santa rosa 46 forties, including clayton's in there. wanna creek alamo, lafayette. also. dublin, pleasanton. even panel has dipped to 44 degrees. sixties seventies and eighties. today we are looking for temperatures to be warming up, especially away from the coast. mainly sixties by the cost. unless you're down towards santa cruz capital. they'll bump into the seventies, but navarro, alamo, atherton and san jose all looking for eighties today 86 85, 83 80 degrees north wind and mount diablo 41 mph after that, it's not too bad, but i've seen about 25 to