Wilmington Water Utility
Wilmington and Northern New Castle County
Population reference
Approximately 110,000 drinking-water customers; the wastewater system treats service-area flows for approximately 450,000 residents in Wilmington and Northern New Castle County.
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 Water bills water, sewer, stormwater, and facilities-management charges on a recurring monthly bill.
- Rate structure
- Usage-based rates differentiated by inside-city versus outside-city service area, property classification, and meter size. The FY2026 budget applies a 5.5% increase to inside-city water, inside-city sewer, and outside-city water charges; the exact current tariff is maintained in the city’s ordinance/rate materials.
- Wastewater and sewer calculation
- Sewer is included on the monthly Wilmington Water bill and varies with the applicable property classification, service location, meter size, and metered consumption under the current ordinance. The reviewed public pages do not expose a current formula showing a winter average, a fixed percentage of water usage, or a universal residential sewer cap; customers should use the current ordinance and bill detail for the premise-specific calculation.
- Meter reading
- Wilmington Water partnered with Itron to upgrade customer water meters. The new meters can be read from a greater distance and are intended to improve reading accuracy and operational efficiency. The reviewed current pages do not state a public read interval, hourly transmission schedule, or Itron model; customers should use the bill and customer portal for premise-specific consumption history.
- Activation or transfer fee
- The start/stop page lists a $40 turn-on fee and a $40 turn-off fee. Start or stop requests must be made in writing, should be submitted at least 72 hours before the desired date, and a shut-off request remains effective for one year before billing resumes unless renewed at least 30 days before expiration. A separate name-transfer fee was not identified in the reviewed pages.
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
- Residential cost reference
- New-account deposit
“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 public website ↗
Provider-controlled destination used to confirm current customer instructions.
- EPA Safe Drinking Water Information System ↗
Federal background on public water-system records and their limitations.