All water systems in Delaware
455 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Artesian Water Company Bear, Hockessin · New Castle County |
231,114 | 0 | 0 | |
|
Wilmington Water Department Wilmington · New Castle County |
107,976 | 1 | 0 | |
|
Veolia Water Delaware, INC New Castle, Wilmington · New Castle County |
100,495 | 0 | 0 | |
|
Rehoboth Pump District (tui) Rehoboth Beach · Sussex County |
81,417 | 0 | 0 | |
|
Bethany Bay Pump District Millville · Sussex County |
52,684 | 0 | 0 | |
|
Newark Water Department Newark · New Castle County |
40,000 | 0 | 0 | |
|
Dover Water Department Dover · Kent County |
39,491 | 0 | 0 | |
|
Dewey Beach Water Department Dewey Beach · Sussex County |
31,000 | 0 | 0 | |
|
Rehoboth Beach Water Department Rehoboth Beach · Sussex County |
25,000 | 0 | 0 | |
|
Artesian Southern Sussex Regional Bethany Beach · Sussex County |
20,145 | 0 | 0 | |
|
Middletown Water Department Middletown · New Castle County |
17,700 | 0 | 0 | |
|
Camden Pump District Camden-wyoming · Kent County |
17,208 | 0 | 0 | |
|
Garrison Lake Pump District Smyrna · Kent County |
17,148 | 0 | 0 | |
|
Sussex Shores Water Company Bethany Beach · Sussex County |
12,450 | 0 | 0 | |
|
Bethany Beach Water Department Bethany Beach · Sussex County |
12,000 | 0 | 0 | |
|
Smyrna Water Department Smyrna · Kent County |
11,813 | 0 | 0 | |
|
Dover Air Force Base Dover Afb · Kent County |
11,000 | 0 | 0 | |
|
Long Neck Water Company Millsboro · Sussex County |
11,000 | 0 | 0 | |
|
Milford Water Department Milford · Kent County |
9,800 | 0 | 0 | |
|
Church Creek (awc) Magnolia · Kent County |
9,654 | 0 | 0 | |
|
Lewes Board of Public Works Lewes · Sussex County |
9,627 | 0 | 0 | |
|
Millsboro Water Department Millsboro · Sussex County |
8,568 | 1 | 0 | |
|
Bayside Pump District (tui) Fenwick Island · Sussex County |
8,400 | 0 | 0 | |
|
Georgetown Water Department Georgetown · Sussex County |
7,259 | 0 | 0 | |
|
Artesian Northern Kent Regional Clayton · Kent County |
7,014 | 0 | 0 | |
|
Seaford Water Department Seaford · Sussex County |
6,699 | 0 | 0 | |
|
Bridgeville Water Department Bridgeville · Sussex County |
6,000 | 0 | 0 | |
|
Municipal Services Commission New Castle · New Castle County |
5,549 | 0 | 0 | |
|
East Ncc District Odessa · New Castle County |
5,538 | 0 | 0 | |
|
Artesian Northern Sussex Regional Lewes · Sussex County |
5,511 | 0 | 0 | |
|
Camden Wyoming Sewer and Water Authority Camden-wyoming · Kent County |
5,000 | 0 | 0 | |
|
North West Pump District Middletown · New Castle County |
4,149 | 0 | 0 | |
|
Laurel Water Department Laurel · Sussex County |
3,984 | 0 | 0 | |
|
Harrington Water Department Harrington · Kent County |
3,562 | 1 | 1 | |
|
Selbyville Water Department Selbyville · Sussex County |
3,502 | 0 | 0 | |
|
Milton Water Department Milton · Sussex County |
3,200 | 0 | 0 | |
|
Broadkiln Beach Water Company (tui) Milford · Sussex County |
3,171 | 0 | 0 | |
|
Willow Grove Mill Middletown · New Castle County |
3,090 | 0 | 0 | |
|
Delaware State Fair Harrington · Kent County |
2,952 | 0 | 0 | |
|
Stockley Regional Georgetown · Sussex County |
2,861 | 0 | 0 | |
|
Delaware City Water Department (awc) Delaware City · New Castle County |
2,610 | 0 | 0 | |
|
Delmar Utility Comm (tn of Delmar) Delmar · Sussex County |
2,027 | 0 | 0 | |
|
Delaware Correctional Center Smyrna · New Castle County |
2,000 | 0 | 0 | |
|
Sussex Technical School District Georgetown · Sussex County |
1,800 | 0 | 0 | |
|
Swann Keys Fenwick Island · Sussex County |
1,764 | 0 | 0 | |
|
Wilmington Vamc Wilmington · New Castle County |
1,695 | 0 | 0 | |
|
Gulls Way Campground Dagsboro · Sussex County |
1,617 | 0 | 0 | |
|
Felton Water Department Felton · Kent County |
1,591 | 1 | 0 | |
|
Rehoboth Bay Community Rehoboth Beach · Sussex County |
1,575 | 0 | 0 | |
|
Bridgeville Pump District Bridgeville · Sussex County |
1,542 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules still in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Delaware records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.