WILMINGTON, DE · New Castle County
WILMINGTON WATER DEPARTMENT Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Delaware’s official records. Always confirm current status with Delaware before making decisions based on this information.
System facts
- System ID (PWSID)
- DE0000663
- System type
- Community Water System
- Population served
- 107,976
- Service connections
- 37,915
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Monitoring, Source Water (LT2)
—Cryptosporidium
May 1, 2015 – May 31, 2015
ResolvedMonitoring, Source Water (LT2)
—Long Term 2 Enhanced Surface Water Treatment Rule
May 1, 2015 – September 29, 2015
ResolvedMonitoring, Source Water (LT2)
—Long Term 2 Enhanced Surface Water Treatment Rule
April 1, 2015 – September 29, 2015
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| May 1, 2015 – May 31, 2015 | Monitoring, Source Water (LT2) | Cryptosporidium | — | Resolved |
| May 1, 2015 – September 29, 2015 | Monitoring, Source Water (LT2) | Long Term 2 Enhanced Surface Water Treatment Rule | — | Resolved |
| April 1, 2015 – September 29, 2015 | Monitoring, Source Water (LT2) | Long Term 2 Enhanced Surface Water Treatment Rule | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- November 10, 2017Federal Compliance achieved1 linked violation
- September 29, 2015Federal Compliance achieved4 linked violations
Contact
OH, CHRISTIANA
302-576-3017
WILMINGTON, DE 19801