City water records

Wilmington public water system guide

Learn more about Wilmington’s public water system. Explore records for WILMINGTON WATER DEPARTMENT, read its annual water quality reports, and follow links to official information.

Local Snapshot

Available Wilmington water system context

One public water system profile is currently linked to Wilmington. The system profile is the stronger data page; this city hub explains the connection and where to check next.

Associated systems1

One linked profile is shown here. Confirm address-level service with an official source.

Reviewed system links1

County or borough is not listed in the current city relationship record.

Primary PWSIDDE0000663

Use the PWSID when checking official sources.

Latest CCR2025

2025 report context is linked through WILMINGTON WATER DEPARTMENT; 2 summarized report entries are shown on the system profile.

Associated Systems

Last updated:

Public water systems linked to this city

Start with the linked system profile for Wilmington; it carries the PWSID, report context, source links, and limitations. The city page is a navigation layer.

Last updated: EPA data

WILMINGTON WATER DEPARTMENT

PWSID DE0000663

View system profile

System-level profile for Wilmington. Use it to review report-year context, source links, available violation records, contaminant relationships, and limitations.

System type
Communities
Wilmington
Counties
County not listed
Latest CCR
2025

How to use this city page

  • Start with PWSID DE0000663 when checking official records.
  • Open the system profile before relying on city-level context.
  • Use the linked annual report and source links for report tables, definitions, and official wording.

Location context: County or borough is not listed in the current city relationship record.

City pages help organize nearby records, but the water system profile is the main record page. A city may have more than one provider, and service areas may not match city limits.

Annual Reports

Latest report context in available data

Annual reports summarize a reporting period. For Wilmington, use the linked system profile and official source before treating city context as complete.

DE0000663

WILMINGTON WATER DEPARTMENT

2025 report: The 2025 report link is available for WILMINGTON WATER DEPARTMENT. Use the linked source report for the full table, definitions, footnotes, and official context. This page includes summarized entries from the available report. They are not a complete copy of the report table.

Source type shown in available records: Utility report

View system profile

What To Check Next

Next steps for Wilmington water information

Use these links to move from local context to system, report, source, and limitation context.

How to look up your drinking water system

Start with a utility bill, PWSID, state lookup tool, or official report so you can find the public water system behind a city or provider name.

View How to look up your drinking water system

How to read a water quality report

A plain-English walkthrough of Consumer Confidence Reports, including report years, detected contaminants, legal limits, violations, and source notes.

View How to read a water quality report

Check methodology

Understand why city pages are navigation layers and why address-level confirmation matters.

View Check methodology

Evidence

Official sources and methodology

Location context

County or borough is not listed in the current city relationship record. Use the linked system PWSID and official source instead of inferring a service area from a city boundary.

Evidence

Sources to confirm next

Use official federal, state, utility, or report sources before treating a page as final.