Average Utility Costs in Rockwall, TX

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

Average monthly utility costs in Rockwall, TX are about $225.71, 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

$225.71

Estimated average monthly utilities in Rockwall are ~$225.71 (1,000 kWh + 5,000 gal assumptions). Average water bill estimate: ~$40.50/mo at 5,000 gallons.

Data freshness: last verified 2026-09-30
  • Electric $104.00 (46%)
  • Water $40.50 (18%)
  • Sewer $54.15 (24%)
  • Trash $27.06 (12%)

Utilities here are in line with the Texas city average.

  • In Texas, cooling demand often makes electric the largest share of the bill.
  • City-provided trash is billed at a monthly fee ($27.06 in our estimate).

Rockwall electric: competitive (deregulated) market

Rockwall is in Texas's deregulated electric market. Oncor Electric Delivery is your transmission and distribution utility (TDU)—they deliver power and charge a regulated delivery fee ($4.06/mo + 6.0295¢/kWh). You choose a Retail Electric Provider (REP) for supply; REP rates and plans vary.

Our estimated electric total above uses TDU delivery + average marketplace supply (~10.4¢/kWh at 1,000 kWh (marketplace average, Sept 30, 2026)). We do not update daily—rates change frequently. Actual bills depend on the plan you pick; current REP offers range from about 6.5¢/kWh and up on Oncor plans listed that day. For an accurate estimate, compare current plans at Choose Texas Power or the state's Power to Choose for the latest rates.

Water

Confirmed
Provider
City of Rockwall
Base charge
$27.30/mo
Volumetric rate
$4.40/1,000 gal
Assumed usage
5,000 gal
Estimated monthly
$40.50
rockwall.com· verified 2026-09-30

Sewer

Estimated
Method
tiered
Estimated monthly
$54.15

Tiered structure simplified to a representative monthly estimate at assumed usage.

rockwall.com· verified 2026-09-30

Trash

Confirmed
Monthly fee
$27.06

$25.00 plus $2.06 sales tax equals $27.06. Household hazardous waste is a separate $1.14 flat fee.

rockwall.com· verified 2026-09-30

Check Internet pricing & availability in Rockwall

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

$225.71

What changes your bill most?

  • Electric is about 46% of your estimated utilities here.
  • Every 100 kWh changes your total by about $9.99.
  • Each additional 1,000 gallons of water adds about $9.25 to your water and sewer bills combined (water ~$4.40 + wastewater ~$4.85).

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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

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More in Texas

Texas utility costsRockwall CountyElectric providers in Texas

FAQ

In Rockwall, electric is deregulated: you choose a retail electric provider (REP) for supply, while the transmission and distribution utility (TDU) delivers power. Our estimate uses regulated delivery charges plus a typical supply rate so you can compare total utility costs. Your actual supply rate depends on the plan you choose.
In Rockwall, sewer is billed in tiers based on usage, so the rate per gallon changes with volume. Our estimate uses the rate structure from City of Rockwall Resolution 25-13 – wastewater rates effective Jan 1, 2026 at the assumed 5,000 gallons per month. Your bill will vary with actual usage.
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. Our estimates use fixed assumed usage (e.g., 1,000 kWh, 5,000 gal) for comparison. Your home may use more or less.
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 Rockwall with another city side-by-side, or see how we calculate estimates.