Napa residents are in for a slow but steady increase in what they pay to flush. The Napa Sanitation District board on Wednesday signed off on a five-year plan to raise sewer service charges by about 3% a year, starting July 1. District leaders say the gradual approach spreads the cost of day-to-day operations and big-ticket repairs over time instead of dropping one large increase on customers all at once.
The decision followed Wednesday's public hearing, during which the district reported receiving 546 written protests, well below the threshold required to stop the rate plan under state law. As covered by the Napa Valley Register, board members said they heard concerns from residents, particularly those on fixed incomes, but argued that smaller annual bumps are easier to swallow than a single sharp spike later.
What homeowners will pay
Under the adopted schedule, the sewer service charge per equivalent dwelling unit (EDU) climbs by roughly 3% a year through 2030. For a single-family home, one EDU is currently priced at $738.60. The district’s cost-of-service study shows that figure rising to $760.76 on July 1, 2026, then to $783.59, $807.10, $831.32 and finally $856.26 in the following years. Those figures and the estimate of about 39,852 current service connections come from the district’s analysis prepared by Carollo Engineers.
How Proposition 218 works
The hearing and protest process unfolded under Proposition 218, the state constitutional amendment that gives property owners a formal way to push back on property-related fees. Local agencies must mail notice, hold a hearing and accept written protests. If more than half of affected property owners submit valid protests, the fee cannot be imposed. The voter guide and constitutional language that created Proposition 218 spell out those procedures along with the majority-protest standard for charges like sewer rates. The full legal details are laid out in the text of Proposition 218.
Why the district says it needs the money
District staff told the board that inflation and rising costs have been eating into the budget and that the system needs stable funding to stay in working order. NapaSan points to sharply higher electricity bills and big jumps in prices for some treatment chemicals in recent years, arguing that those expenses have to be covered if the plant, pipelines, pump stations and other equipment are going to keep functioning reliably. The district also highlights its recycled-water and biosolids programs as helping offset some demands on the system. Those arguments are laid out in more detail in NapaSan’s rate brochure.
What comes next for customers
The first 3% adjustment is scheduled to kick in on July 1. For most homeowners, the sewer service charge does not show up as a separate monthly bill but as an assessment on the annual property tax statement. District staff and board members urged customers with questions about how the new rates will appear on their bills or about possible assistance options to contact the district directly. Coverage in the Napa Valley Register noted that directors said they were trying to strike a balance between keeping sewer service affordable now and making sure the system does not fall behind on maintenance in the years ahead.
