Wholesale Water Information
Tacoma Water serves 16 wholesale customers in the Puget Sound region. Most water utilities have their own source of supply, but they may buy water from Tacoma Water:
- Supplement their existing water supply.
- Accommodate growth.
- Add redundancy to increase system resilience.
- Improve service in parts of the service area.
- Meet high seasonal demand.
- Provide emergency supply.
Proposed 2027–2028 water rate adjustment
Tacoma Water is proposing the following rate adjustments for wholesale customers:
- 2027 – 3.2%
- 2028 – 3.2%
2026 rates
-
Million gallons per day of contracted peak capacity (MGD)
For each MGD of contracted peak capacity: $3,395.58
-
Constant use, per CCF (100 cubic feet or 748 gallons)
- Winter (Oct. to May): $1.766
- Summer (June to Sept.): $2.208
Usage charge per month for summer season peaking (100 cubic feet or 748 gallons)
- Summer (June to Sept.): $3.311
We set our contracted peak capacity to comply with our wholesale water supply agreements. Other charges and fees may apply. For detailed information about water regulations and rates, refer to Chapter 12.10 of the Tacoma Municipal Code, Water – Regulation and Rates.
Alternative options
Tacoma is open to exploring alternative pricing options with our wholesale customers on a short-term basis. If you are interested in exploring alternative pricing options, we will work with you to determine the most suitable path for your situation.
-
- Market-based pricing that enables you to pay a lower rate than the published rates. Pricing is based on a utility’s other water sources, how much water you need, and how long you need it.
- Final pricing terms are subject to approval by the Public Utility Board and City Council.
-
- Reverse Capacity Amortization (RCA) enables you to opt out of our monthly fixed charge for each month that you do not choose to receive water.
- We calculate RCA by amortizing the value of contracted capacity over many years. This provides you with flexibility to reduce your contracted capacity in return for a lower monthly ready-to-serve charge.