Customer Rates and Charges

Customer Rates and Charges

Bi-Monthly Water Service Rate Schedule

Water – General Facilities Connection Charge (per ERU): $8,320

Other Fees and Charges

Sewer Rates and Charges

Bi-Monthly Sewer Service Rates

• Single Family Residence or 1 Equivalent Residential Unit (ERU) Rate:
  • King County’s Portion: $125.32
  • District’s Portion: $68.74
  • Total $194.06
• Commercial Sewer Rate: Number of ERU’s x $194.06

Sewer – General Facilities Connection Charge (per ERU): $4,830

Other Fees and Charges

Street Lighting Service Rate

Bi-Monthly Rate per Single Family Residence: $7.66

City of Sammamish Utility Tax

The City of Sammamish implemented a 6.0% utility tax on water and sewer service, effective January 1, 2026.

Related Topics

• King County Regional System Adopted Sewer Rate and Capacity Charge
• Developer Fees and Charges