At the request of the Columbia Power & Water Systems (CPWS) Board of Public Utilities, the Columbia City Council voted on June 12, 2025, to replace the existing water rate structure for CPWS customers.
In addition to the below rate increase, there will be a 72 cent per 1,000 gallon increase to wholesale customers, which is water sold by CPWS to outside agencies for distribution.
Current Residential Rate Structure
| Gallons Used Per Month | Urban Area | Suburban Area |
| 0-8,000 Gallons | $3.30 per 1,000 Gallons | $4.30 per 1,000 Gallons |
| 8,001-20,000 Gallons | $3.80 per 1,000 Gallons | $4.80 per 1,000 Gallons |
| Over 20,000 Gallons | $4.05 per 1,000 Gallons | $5.05 per 1,000 Gallons |
| Customer Charge | $11.75 | $17.25 |
New Residential Rate Structure (beginning August 1, 2025)
| Gallons Used Per Month | Urban Area | Suburban Area |
| 0-8,000 Gallons | $3.60 per 1,000 Gallons | $4.60 per 1,000 Gallons |
| 8,001-20,000 Gallons | $4.10 per 1,000 Gallons | $5.10 per 1,000 Gallons |
| Over 20,000 Gallons | $4.35 per 1,000 Gallons | $5.35 per 1,000 Gallons |
| Customer Charge | $16.75 | $22.25 |
New Commercial / Industrial Rate Structure (beginning August 1, 2025)
| Gallons Used Per Month | Urban Area | Suburban Area |
| 0-8,000 Gallons | Commercial - $3.60 / 1,000g
Industrial - $3.30 / 1,000g |
Commercial - $4.60 / 1,000g
Industrial - $4.30 / 1,000g |
| 8,001-20,000 Gallons | Commercial - $4.10 / 1,000g
Industrial - $3.80 / 1,000g |
Commercial - $5.10 / 1,000g
Industrial - $4.80 / 1,000g |
| Over 20,000 Gallons | Commercial - $4.35 / 1,000g
Industrial - $4.05 / 1,000g |
Commercial - $5.35 / 1,000g
Industrial - $5.05 / 1,000g |
| Customer Charge | Commercial - $26.25
Industrial - $86.15 |
Commercial - $32.00
Industrial - $86.15 |