Delta Tunnel Vote Will Raise Water Bills as State Improves Water Delivery Infrastructure Long Beach Post » What does last week’s vote by the Metropolitan Water District – approving nearly $11 billion in funding for the Delta twin tunnels water project – mean for customers? An average $4.80 per month increase for water service. Here’s why. Michelle2018-04-16T14:23:02-08:00April 13th, 2018|California, California WaterFix, Water|