California legislative leaders agreed Sunday to spend $130 million a year to improve water systems in communities where people can’t drink from their taps, something Democratic leaders say amounts to a crisis in one of the nation’s wealthiest states. To pay for it, the state would tap a fund dedicated to reducing greenhouse gas emissions, a move that alarmed some environmental activists who say its set up an unfair choice between clean air and water. “What kind of choice is that?” said Kathryn Phillips, director of Sierra Club California. “People shouldn’t have to choose between clean water and clean air.”