[jpsb]

"it's built on an old lake (literally) the water problem is just as severe"

Hmmm, did not know that, eathquakes could be a serious problem if the lake bed turns to quick sand, very nasty. I've read something like that can happen if condition are right (water/soil mix).

[SkyDancer]

Called "liquefaction" of the soil - where water comes up through the soil and mixes with it ...