TheUtilityCalc TARIFF ENGINE • 2026
💧 Official Rate Schedule • City of Wilmington Water Dept

Water & Sewer in Wilmington, DE

Detailed 2026 tariff breakdown, meter base fees, volumetric rate tiers, and average household monthly bills in New Castle County.

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Wilmington (DE) Monthly Utility Bill Calculator

Simulate itemized municipal charges based on occupants, square footage, and NOAA temperature peaks.

1,800 sq ft
Presets:
Summer Peak: +38% AC Surge
Heating System
Broadband Average 500+ Mbps residential plan
Total Estimated Cost Calculating...
$350 / month
Annual projected spend: $4,200 vs US Avg
Electricity 1,020 kWh
$0
City Water 5,850 gal
$0
Natural Gas 24 Therms
$0
Sewer & Stormwater Fixed + Volumetric
$0
Trash & Recycling Curbside Cart
$0
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United States Municipal Public Records & Rate Index
Verification ID: UTC-2026-US-8910
Certified On: September 25, 2026

Official Residential Utility Estimate: Wilmington, DE

3 Occupants | 1,800 sq ft | Season: SUMMER | Heating: GAS
Total Estimated Monthly Utility Expense: $335 / Month
Utility Service Designated Local Provider Estimated Monthly Charge
⚡ Electricity (Cooling & Power) Delmarva Power $142 (1,020 kWh)
💧 City Water & Meter Base City of Wilmington Water Dept $48 (5,850 gal)
♨️ Natural Gas / Fuel Delmarva Power Gas $45 (24 Therms)
🚿 Sewer & Drainage Discharge Municipal Wastewater Authority $41
🗑️ Curbside Solid Waste & Recycling City Sanitation Dept $32

Methodological Notice & Regulatory Citation: This estimate was computed using published 2026 municipal tariff resolutions and Public Utility Commission rate schedules for Wilmington, DE. Consumption calibrated with USGS per capita water metrics and NOAA regional degree day benchmarks. Intended for lease budgeting, closing cost verification, and rental disclosures.

Wilmington Water & Sewer Rate Schedule (2026)

Published tariff components billed by City of Wilmington Water Dept.

Fixed Base Fee
$16.00/mo
Meter connection charge
Volumetric Energy/Usage Rate
Tier 1: $3.60 | Tier 2: $5.60
Billed per 1,000 Gallons consumed

In Wilmington, residential utility billing follows standard municipal tariff designs approved by state utility commissions and city ordinances. The total charge consists of the non-bypassable customer service meter charge plus progressive consumption charges.

For a typical 3-bedroom single family home in New Castle County, monthly consumption varies between seasonal peaks (e.g. summer cooling or winter furnace demand).

📞 Official Customer Service & Service Start

City of Wilmington Water Dept
Primary service utility for Wilmington, DE
(302) 571-4144
Visit Official Website →

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Official Municipal Filings

Tariff data is sourced directly from city council utility rate resolutions, Public Utility Commission (PUC) filings, and retail provider dockets.

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Federal Energy Benchmarks

U.S. Energy Information Administration (EIA) Form EIA-861M residential sales data is leveraged to calibrate regional seasonal consumption models.

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USGS & NOAA Climate Standards

Water and sewer discharge volume models use USGS per capita metrics; HVAC load draws from NOAA Cooling & Heating Degree Day (CDD/HDD) indexes.

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Est. Monthly Bill
$335/mo