The Boston Water and Sewer Commission will hold a public meeting to discuss a 3.4 percent rate increase that will take effect next year.

Commissioners will meet Tuesday in the second floor training room of the Boston Water and Sewer Commission building “for the purpose of providing interested persons with an opportunity to present data, views or arguments relating to the following scale rates for water, sewer and stormwater in the City of Boston, which are scheduled to take effect on January 1, 2025,” the public notice states.

Under the 2025 rate increase, the commission says, the average single-family customer using 180 gallons per day in 2025 would be charged about $111.75 per 31-day month, or about $1,317.79 per year .

The Boston Water and Sewer Commission (BWSC) proposed a 3.4% rate increase for water, sewer and stormwater revenues, an increase from the previous two years, which fell by respectively 1.4% and 1.5%. The rate increase still remains slightly below the average of the last decade, with increases reaching 8.9% in 2021.

The Commission said the increase would cover “projected spending for 2025 and all other legal and contractual funding requirements.” The average combined revenue from water and sewer rates will be $24.35 per 1,000 gallons for the year, BWSC estimates.

Nationally, over the past 12 years, combined household water and sewer bills have increased by an average of 4.1% each year, according to Blue Field Research.

The BWSC also released estimates of revenue rate increases for the following four years. Rates are expected to increase by 3.75% in 2026 and 2027 before dropping to 3% for 2028 and 2029.

The Commission implements an annual capital improvement plan “to ensure the uninterrupted provision of water and sewer services while striving to reduce unnecessary water losses and minimize pollution of Boston Harbor and tributary waters,” the rate increase proposal states.