Honolulu water and sewer rates
Who supplies water to Honolulu houses, what it costs, and how the sewer charge works.
Board of Water Supply
Board of Water Supply rate schedule (FY 2024 to FY 2029): a customer charge each month by meter size, plus a quantity charge per 1,000 gallons, with the July 1, 2026 column used here.
| Use a month | Price per 1,000 gallons |
|---|---|
| Fixed charge | $17.30 a month |
| 0 to 2 thousand gallons | $4.92 |
| 2 to 6 thousand gallons | $7.51 |
| 6 to 30 thousand gallons | $8.98 |
| 30 to more | $15.06 |
Sewer
City sewer rate effective July 1, 2026 for a single-family or duplex home on metered water: a monthly base charge of $48.27 plus a consumption charge of $11.83 per 1,000 gallons of metered water.
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Sources
Checked October 22, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.