Wilmington Water Utility - Department of Public Works

Provider briefing

How this utility’s billing works

Wilmington Water Utility - Department of Public Works operates as a municipal department serving Wilmington and qualifying outside-City water-service areas. Customers should use the provider’s current account-specific bill and official customer-service instructions as the final authority for deadlines, balances, and service requests.

The published water-rate framework is described as 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.. Bills are generated monthly. wilmington transitioned from quarterly to monthly utility billing and the current water utility rate page confirms monthly bills issued since 2020., and a typical residential cost reference is 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.. These descriptions are useful planning benchmarks; actual charges can change with meter size, usage, sewer averaging, local taxes, drought stages, or account-specific fees.

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 and infrastructure notes

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.