Wilmington Water Department
Drinking water quality, contact, and Consumer Confidence Report
Serving 1 city in DE · PWSID DE0000663
Wilmington Water Department serves 107,976 people. PFAS detected above health guidelines (Perfluorooctanoic acid) — full contaminant breakdown below.
- People served
- 107,976
- Last EPA sample
- 2025-07-16
- PFAS
- Detected (1 compound)
- Health-based violations since 2020
- 0
Data sources: EPA SDWIS, Wilmington Water Department's published Consumer Confidence Report, and compliance monitoring reported to EPA by Delaware DHSS Office of Drinking Water.
This page summarizes publicly available EPA and CCR records. For health decisions about your water, consult your utility or a licensed professional.
Official Wilmington Water Department Resources
Help Paying Your Wilmington Water Department Water Bill
- Ask Wilmington Water Department about payment plans and assistance.
- Call 211 to reach local help with utility bills.Verified from 211.org
- Find your local Community Action Agency.Verified from communityactionpartnership.com
- The federal water-bill program (LIHWAP) ended in March 2024.Verified from acf.govVerified from csd.ca.gov
Water outage or no water?
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Delaware
Wilmington Water Department Service Area
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This map shows the approximate service area for Wilmington Water Department. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.
Wilmington Water Department Water Quality Grade
Not graded: Monitor
Wilmington Water Department reads Monitor. A letter grade is given only beside a Safe verdict.
Is Wilmington Water Department Water Safe to Drink?
Wilmington Water Department has reported 2 contaminants above EPA health-based guidelines (MCLGs) and 1 above EPA's legal limit (MCL, enforceable from April 26, 2029) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.
This utility serves 107,976 people across 1 city in DE. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.
Get your water independently tested in Delaware →How does Delaware water quality rank nationally? →
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Delaware
Learn more about the contaminants detected in Wilmington Water Department:
Fluoride in Wilmington Water Department Water
Wilmington Water Department
PWSID DE0000663
Wilmington Water Department reported 0.751 mg/L, at or above the 0.7 mg/L U.S. Public Health Service recommendation and below the 1.5 mg/L WHO guideline value and NTP neurodevelopment review level.
Wilmington Water Department Service Area
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Wilmington Water Department Contact & Information
Phone
Mailing Address
B2B Contact Data
B2B Contact Data Available
Contacts for Wilmington Water Department
| Name | Title | Phone | |
|---|---|---|---|
| J████ S████ | Water Treatment Supervisor | (555) ███-████ | j████@city████.gov |
| M████ J██████ | Utility Director | (555) ███-████ | m████@water████.org |
Water Sources & Treatment
Water Sources
Treatment Methods
Disinfectant Used
hypochlorite
Wilmington Water Department Consumer Confidence Report
A Consumer Confidence Report (CCR) is the EPA-mandated annual water-quality report every community water system must publish by July 1 each year (Safe Drinking Water Act §1414(c)(4)). It summarizes contaminants tested, MCL and MCLG comparisons, and any system violations from the prior calendar year.
A current CCR for Wilmington Water Department has not been published or validated on TapWaterData yet.
Residents: contact the utility directly using the phone number above, or check the EPA’s national CCR portal. Reports are typically distributed by mail or posted on the utility’s official website.
Wilmington Water Department Annual Water Quality Reports
Historical reports are being compiled. Check back soon for archived water quality data.
What is a CCR? The Consumer Confidence Report (CCR) is an annual water quality report that water utilities are required by the EPA to provide to customers. It contains information about your water source, detected contaminants, and compliance status.
EPA Health-Based Violations Since 2020
Wilmington Water Department has no health-based EPA violation since 2020 (EPA data as of Q2 2026).
EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Concerned about what's in your water?
You're viewing 3 contaminants above health-based guidelines here. Your own tap water can differ — upload your test (PDF or a photo) and we'll email a full plain-English reading of every number, free.
Your upload also helps us keep local water data accurate — we only ever share anonymized, area-level summaries.
Upload my testRecommended Water Filters for Wilmington Water Department
Based on water quality data from cities served by Wilmington Water Department, we recommend NSF-certified filters that can remove contaminants above health guidelines.
Filter guides for the contaminants detected here:
Frequently Asked Questions about Wilmington Water Department
Is Wilmington Water Department water safe to drink?
Does Wilmington Water Department have PFAS in its water?
How do I pay my Wilmington Water Department water bill?
How many people does Wilmington Water Department serve?
What cities does Wilmington Water Department serve?
Does Wilmington Water Department have any EPA violations?
What is Wilmington Water Department's phone number?
Where can I find Wilmington Water Department's Consumer Confidence Report?
Similar water utilities in Delaware
How we built this page
Water-quality and contact data on this page comes from public federal and state records. We update each utility's record whenever its underlying source publishes new data — typically within days of an EPA SDWIS refresh.
- Contaminants & violations: EPA Safe Drinking Water Information System (SDWIS) plus the Unregulated Contaminant Monitoring Rule (UCMR-5) for PFAS and emerging contaminants.
- Annual reports: Wilmington Water Department's most recent published Consumer Confidence Report (CCR), where available.
- Service area & contact: EPA SDWIS. The compliance records it holds for this system are reported to EPA by Delaware DHSS Office of Drinking Water, the state's drinking-water primacy agency.
Spotted a data issue? Use the Spotted something off? link at the bottom of the page — corrections feed back into the next data refresh. Learn more about TapWaterData.
Are you Wilmington Water Department? Publish your 2027 CCR
TapWaterData runs a free CCR publishing service for community water systems. Claim this listing to publish your Consumer Confidence Report here — it inherits this page's search authority and reaches every customer who Googles Wilmington Water Department.
- EPA-compliant distribution. Satisfies the 2027 Revised CCR Rule direct-URL requirement with an auditable archive.
- Publish once a year. Agent-assisted workflow; no login setup for small systems.
- Inherits this page's reach. Your published CCR appears directly on the page customers already find on Google.
Free for operators. No card required. Typical setup: 5 minutes.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach Wilmington Water Department. For a problem with your water now (discolored water, no water, low pressure, a leak), contact Wilmington Water Department directly.
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