Average Utility Costs in Sammamish, WA

Estimated monthly utility costs (1,000 kWh + 5,000 gal)

Average monthly utility costs in Sammamish, WA are about $396.36, based on 1,000 kWh of electricity and 5,000 gallons of water, plus sewer and trash fees. See the full breakdown and sources below.

Total estimated monthly utilities

$396.36

Data freshness: last verified 2026-08-15
  • Electric $203.40 (51%)
  • Water $59.96 (15%)
  • Sewer $95.00 (24%)
  • Trash $38.00 (10%)

Utilities here are about 20% higher than the Washington city average, driven mainly by electric rates.

  • In Washington, heating and cooling often makes electric the largest share of the bill.
  • Trash is provided by a private hauler under city contract. Fees and services vary by city—check your local rate schedule for details.

Electric

Confirmed
Provider
Puget Sound Energy (PSE)
Base charge
$7.49/mo
Energy rate
$0.1959/kWh
Assumed usage
1000 kWh
Estimated monthly
$203.40
utc.wa.gov· verified 2026-08-15

PSE Schedule 7. City of Sammamish does not retail electric.

Water

Confirmed
Provider
Sammamish Plateau Water
Base charge
$44.21/mo
Volumetric rate
$3.15/1,000 gal
Assumed usage
5,000 gal
Estimated monthly
$59.96

¾" monthly base $44.21 (posted January 2026) + consumption. Handout still prints 2025 block rates: 0–6 CCF $2.25, 6–12 $3.32, 12–19 $5.38, 19–30 $10.51, >30 $15.00 per CCF. At 5,000 gal (6.68 CCF): $44.21 + 6×$2.25 + 0.68×$3.32 = $59.97. Northeast Sammamish Sewer & Water serves some north-end streets instead.

spwater.org· verified 2026-08-15

Sewer

Estimated
Method
flat
Estimated monthly
$95.00

Most Sammamish lots pay Sammamish Plateau (or NE Sammamish) collection plus King County treatment $62.66/mo (2026 RCE). Stored ~$95/mo combines the King County pass-through with a typical Eastside collection component (Redmond RSA is $17.35 collection; Issaquah city+KC minimum is ~$90). Confirm the district bill. Not City of Seattle sewer.

spwater.org· verified 2026-08-15

Trash

Estimated
Monthly fee
$38.00

Republic hauls under a City contract. Stored ~$38/mo is a typical 32–35 gallon weekly cart estimate pending Republic's posted 2026 Sammamish table.

sammamish.us· verified 2026-08-15

Check Internet pricing & availability in Sammamish

Internet service varies widely—many providers, different plans, introductory offers, and bundles make it hard to compare apples to apples. That's why we don't estimate internet on this page like we do for electric, water, sewer, and trash. Use our tool to compare providers for your address or ZIP code.

Total estimated monthly utilities

$396.36

What changes your bill most?

  • Electric is about 51% of your estimated utilities here.
  • Every 100 kWh changes your total by about $19.59.
  • Water increases by about $3.15 per additional 1,000 gallons.

Assumptions

  • Electric: 1000 kWh/month
  • Water: 5,000 gallons/month

What these labels mean

  • Confirmed — From this area's rate schedule.
  • Benchmark — From an official typical (e.g. state commission 1,000 kWh); not city-specific.
  • Delivery only — Regulated delivery charges only (e.g. Texas); supply varies by plan.
  • Estimated — From other or incomplete sources; use as a rough guide.
Sources

Wondering if solar makes sense for you? Try our solar payback calculator to find out.

Nearby Cities Utility Costs

Other cities in King County. Click a city for full breakdowns.

CityEst. total/mo
Sammamish (this)$396.36
Seattle$337.86
Bellevue$495.52
Kent$386.47
Auburn$372.36
Kirkland$478.58

More in Washington

Washington utility costsKing CountyElectric providers in Washington

FAQ

Trash in Sammamish is provided by a private hauler (Republic Services) under city contract. Fees and services vary by city—recycling or yard waste may be included or available for an extra fee. Our estimate uses the standard residential rate.
We use base charges and per-unit rates from official provider pages. Electric = base + (rate × assumed kWh). Water = base + (rate per 1,000 gal × assumed gallons / 1,000). Sewer is either a flat fee or a percentage of water. Trash is a fixed monthly fee. See the Methodology page for full formulas.
Actual bills depend on your usage, seasonal rates, taxes, fees, and provider-specific rules. Washington is a regulated electric state; our estimates use the serving utility's tariff at 1,000 kWh for comparison.
Each component shows a 'last verified' date. We aim to update from official sources periodically; always confirm current rates on the provider's site before making decisions.

Learn more

For tips on understanding your bill, comparing cities, and how electric and utility rates work by state, see our blog. Compare Sammamish with another city side-by-side, or see how we calculate estimates.