Tapcensus

Delaware

New Castle County drinking water quality

77 active public water systems serve 541,173 people in New Castle County. 68 are compliant, 9 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.

Active systems 77 31 community systems
People served 541K by public water systems
Systems with violations 9 12% of active systems, past 3 years
Serious violators 0 0 systems carry a health flag

Community water systems

31 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Artesian Water Company
Bear, Hockessin 		231,114 0 0
Wilmington Water Department
Wilmington 		107,976 1 0
Veolia Water Delaware, INC
New Castle, Wilmington 		100,495 0 0
Newark Water Department
Newark 		40,000 0 0
Middletown Water Department
Middletown 		17,700 0 0
Municipal Services Commission
New Castle 		5,549 0 0
East Ncc District
Odessa 		5,538 0 0
North West Pump District
Middletown 		4,149 0 0
Willow Grove Mill
Middletown 		3,090 0 0
Delaware City Water Department (awc)
Delaware City 		2,610 0 0
Delaware Correctional Center
Smyrna 		2,000 0 0
Parkside
Middletown 		1,467 0 0
South East Pump District
Middletown 		951 0 0
Dove Run
Middletown 		909 0 0
Villagebrook
Middletown 		847 0 0
Winterthur
Winterthur 		687 0 0
Hunters Run
New Castle 		683 0 0
Kingsmill
New Castle 		381 0 0
ST Andrews Apartments
Bear 		360 0 0
Ascot Landing Subdivision
Newark 		338 0 0
ST Andrews Apartment New Addition
Bear 		272 0 0
Glasgow Pines II
New Castle 		235 0 0
Meridian Crossing Apartments
 220 0 0
Ponds of Odessa (awc)
Middletown 		216 0 0
Bayview Improvement Company (awc)
Port Penn 		214 0 0
Drawyers Creek Pump District
Odessa 		204 0 0
Frederick Lodge Pump District
Townsend 		204 0 0
Summit Pond Pump District
Middletown 		177 0 0
ST Andrews Single Family Homes
Bear 		120 0 0
MT Pleasant Mhp, LLC
Middletown 		117 0 0
Carpenters Row
Montchanin 		60 0 0
Non-community systems (46: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Wilmington Vamc
Wilmington 		1,695 0 0
Siemens Healthcare Diagnostics
Newark 		1,500 0 0
Greenville Country Club
Montchanin 		1,200 0 0
Dove Run Shopping Center
Middletown 		855 0 0
Shore Stop #227 Townsend
Townsend 		800 0 0
Delaware Museum of Natural History
Greenville 		700 0 0
Fort Delaware State Park
Delaware City 		700 1 0
Brick Mill Early Childhood Center
Middletown 		360 0 0
301 Plaza
Middletown 		300 0 0
Helens Sausage House
Smyrna 		250 0 0
Summit Village Shopping Center
Middletown 		250 0 0
Vic Mead Hunt Club
Wilmington 		250 0 0
Ashland Nature Center System #1
Hockessin 		200 0 0
Brandywine Creek State Park
Winterthur 		200 0 0
Emergency Operations Center
Smyrna 		200 0 0
Shoppes of MT Pleasant
Middletown 		200 0 0
ST Andrews School I
Middletown 		200 0 0
Bidermann Golf Course
Wilmington 		175 0 0
Centreville Layton School System I
Centerville 		170 1 1
Country Center Girl Scout Camp
Hockessin 		165 0 0
Buckleys Tavern Complex
Greenville, Winterthur 		150 0 0
ST Andrews School II
Middletown 		140 0 0
The Little Campus, LLC
Middletown 		134 1 1
Ashland Nature Center System #2
Hockessin 		125 0 0
Fieldstone Golf Club
Greenville 		124 1 0
Center for the Creative Arts
Yorklyn 		115 0 0
Kiddie Academy of Middletown
Middletown 		110 0 0
Happy Place 5, LLC
Middletown 		103 0 0
White Clay Creek State Park (system 1)
Newark 		100 0 0
Delaware Turnpike Administration
Newark 		80 1 1
Inn at Montchanin
Montchanin 		80 0 0
MT Cuba Center
Wilmington 		60 0 0
Auburn Valley State Park
Yorklyn 		57 0 0
White Clay Creek State Park (system 3)
Newark 		56 0 0
Delaware State Police Troop 9
Odessa 		50 0 0
Kellys Tavern
Port Penn 		50 0 0
Shore Stop #253 New Castle
New Castle 		50 0 0
Summit Aviation
Middletown 		50 1 0
Townsend Tavern & Liquor Store
Townsend 		50 0 0
Centreville Layton School System II
Centerville 		47 1 0
Hy-Point Dairy Farms
Rockland 		43 1 1
Intercollegiate Studies Institute
Greenville 		35 0 0
Justshowupchurch, Inc.
Middletown 		31 0 0
Centreville Barns
Montchanin 		30 0 0
Summit Center
Middletown 		25 0 0
White Clay Creek State Park (system 2)
Newark 		25 0 0
Inactive systems (162, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

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.