Water customers in Point Reyes Station, Olema and Inverness Park will see their next water bill change after the North Marin Water District approved a new rate structure on Tuesday. The threshold to pay more was lowered from 400 to 250 gallons per day, at the same time the rate for users over that threshold were reduced. Charges for high-elevation zones went up depending on the location. The extra 6 percent in projected revenue is meant to keep up with inflation and pay for infrastructure improvements. The district is building a new well on the Gallagher ranch, replacing a tank in Paradise Ranch Estates and in 2030, the district is planning to modify its treatment plant at a cost of $4.8 million. At a public hearing, customer Ken Fox commented that it was crazy that heavier users were paying less during a drought and lawyer Morgan Biggerstaff responded that water suppliers are required to charge customers based on the cost of service. “The board cannot just make a policy choice to say we think the highest water users should pay five times what the normal user pays. There’s a restriction under the law from that,” he said.  To see how you are impacted, visit www.nmwd.com/account/annual-cost-calculator.