The measure, if enacted, would cost the state about $30 million a year.
If enacted, the measure would cost $36 million in its first year to pay for medical treatments.
The measures have cost the government about $3.7 billion per year.
That measure would have cost $7 billion over 10 years.
Altogether, the measure would cost about $1.9 billion over 30 years out of California's general fund.
Officials estimate that the measure would cost the region $171 million a year.
Taken together, these measures will cost an American family with an income of about $40,000 a year less than $17 a month.
Taken as a whole these measures would cost someone on a £30,000 a year salary about £825 of their after tax income.
It is not yet clear how much the measure will cost.
The measure will cost the average homeowner about $7.60 a year over the next 20 years, county officials said.