In the end there are only two choices. Do nothing and hope it doesn’t break during their lifetimes or spend lot’s of money to build a new one.
Fixing the old one can come about after a new one is in place.
On the other hand having it break means that San Francisco real estate prices will crash when the water runs out. Lot’s of potentially good deals then and once they are bought up a new option on water supply can come forth. Desalination plants or a new tunnel.
What will actually happen is anyone’s guess though. We are talking California here, ‘ya know’.
Admittedly I am not an expert on desalinization ...however, isn’t the SF region sitting smack dab on the Pacific?
Water, water everywhere and not a drop to drink......
“...San Francisco real estate prices will crash when the water runs out.”
Only in Liberal Crazytown would a city located on the ocean have the water run out.
What kind of desalination plant could be built for the cost of building a new tunnel?