No it is not. The water districts are extremely powerful, and the biggest usage districts are held by agricultural interests. They have staggered elections to stop water board takeovers and ensure that they can shift water costs from usage based to per-meter fees. Captive homeowners in agriculture controlled water districts can end up with $200 a month water bills for a family of four.
Source: Lived in a water district for 7 years with some of the cheapest water in the state (sub $3 a unit) yet a water bill for a family of four with fake grass and small yard of around $180 a month. If we used ZERO water, the bill would have been about $120 in flat fees. We were subsidizing the massive avocado groves and other major agricultural producers in the water district. They brushed off our complaints and the fact that we pointed to neighboring cities with $40 water bills.