Wilmington Water Utility - Department of Public Works
Wilmington and qualifying outside-City water-service areas
Population reference
107,976
Billing detail
Partial public detail found
Official destination
Open provider website ↗Provider-specific findings
Billing and account research from public material
Provider-specific research notes are displayed separately from fields that contain only an unavailable-information marker. Read qualifiers in each note and verify current account terms with the provider.
- Billing frequency
- Monthly. Wilmington transitioned from quarterly to monthly utility billing and the current Water Utility rate page confirms monthly bills issued since 2020.
- Rate structure
- Facilities charge based on meter size plus increasing-block monthly water-usage charge, with separate inside/outside-City classifications. The current published residential example lists a 5/8-inch facilities charge, includes the first 2,000 gallons, charges 2,001-5,000 gallons at the first block and usage above 5,000 gallons at the second block. Sewer is calculated from the facilities-plus-water-consumption amount, and inside-City stormwater is based on impervious-area tier/ESU ratio.
- Residential cost reference
- Approximately $90-$100 per month for an inside-City residential account using 6,000 gallons, a 5/8-inch meter and a low stormwater tier. The official residential example shows $72.13 at 4,000 gallons using the July 2024 schedule; applying the documented FY2026 water/sewer increase and 6% stormwater increase, plus the additional 2,000 gallons at the second water block, produces a current planning estimate near $93. Actual cost depends on meter size, city-limit status and impervious-area tier.
- Wastewater and sewer calculation
- Inside-City residential sewer is calculated from the monthly facilities charge plus water consumption, multiplied by the City's sewer factor of 0.7315 in the published residential example. Wilmington separately bills stormwater by impervious-area tier. Outside-City customers and non-residential classes use their own rate schedules; the reviewed formula does not use winter averaging.
- Meter reading
- Wilmington bills water by meter usage and provides account usage history through its current portal, but the reviewed 2026 public pages do not identify AMR/AMI technology, radio transmission interval or a universal read route. Monthly billing is based on the meter reading and account classification.
Context, not a score
How documentation coverage compares
This profile
71%
overview fields with research notes
Delaware
33%
records with any overview detail
National index
50%
records with any overview detail
Coverage measures what this directory documented. It does not measure service quality, affordability, or regulatory compliance.
Research record
Partial public detail found
5 of 7 fields in this section contain provider-specific public detail in dataset August 1, 2026.
Documented
71%
Details not confirmed in the reviewed public material
- New-account deposit
- Activation or transfer fee
“Not confirmed” means the directory did not identify a dependable public statement. It does not mean the provider has no policy or option.
Primary verification routes
- Wilmington Water Utility - Department of Public Works public website ↗
Provider-controlled destination used to confirm current customer instructions.
- ipn2.paymentus.com reference ↗
Public URL preserved in the compiled record. Confirm its publisher, date, and applicability before relying on it.
- EPA Safe Drinking Water Information System ↗
Federal background on public water-system records and their limitations.