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Delaware system directory

Find a community water system

Search every Delaware community water system with a current nitrate result. Open a system to see its latest reading, reporting date, nitrate band and population served.

207

systems with a current result

1,022,142

people served by them

10

systems carrying a supplier result

35

systems at or above 5 mg/L

How to read the directory: each system is placed in a band by its most recent reported result in the rolling three-year window. Purchased-water systems carry their supplier's result and are tagged. Bands describe how strongly human activity, read from nitrate, has marked a water source; they are not a safety verdict.

Showing 207 of 207 systems

A

Angola Beach EstatesHealth-study range5.19 mg/LJan 20261,400 served Angola Crest IiHealth-study range8.53 mg/LJun 2026159 served Artesian Northern Kent RegionalNatural background0.50 mg/LMay 20257,014 served Artesian Northern Sussex RegionalHuman impact likely2.89 mg/LMay 20265,511 served Artesian Southern Sussex RegionalHuman impact likely1.85 mg/LJul 202518,215 served Artesian Water CompanyHealth-study range7.70 mg/LApr 2026231,114 served Ascot Landing Subdivisionpurchased waterHealth-study range7.70 mg/LApr 2026338 served Avalon Woods Owners Assoc IncHuman impact clear3.79 mg/LJun 2026306 served

B

Barkers LandingNatural background0.05 mg/LJan 2026498 served Bayshore Mobile Home ParkHuman impact clear4.20 mg/LApr 2026533 served Bayside Pump District (Tui)Human impact clear4.40 mg/LMar 20248,400 served Bayview Improvement Company (Awc)Natural background0.50 mg/LMar 2025214 served Baywood GreensHuman impact clear3.52 mg/LJul 2025909 served Bethany Bay Pump DistrictNatural background0.05 mg/LJun 202651,000 served Bethany Beach Water DepartmentNatural background0.25 mg/LAug 202512,000 served Bethany Crest LlcHuman impact likely2.46 mg/LApr 2026115 served Town of BladesHuman impact clear4.95 mg/LJun 20261,200 served Blanton'S Manufactured Home CommunityNatural background0.05 mg/LJan 202675 served Blue Heron EstatesHuman impact clear3.12 mg/LApr 2025111 served Briarwood Manor MhpNatural background0.05 mg/LMar 2026296 served Bridgeville Mall (Tui)Natural background0.58 mg/LJun 2026550 served Bridgeville Pump DistrictNatural background0.05 mg/LMay 20261,542 served Bridgeville Water DepartmentHealth-study range6.00 mg/LJun 20266,000 served Broadkiln Beach Water Company (Tui)Human impact likely1.57 mg/LFeb 20263,171 served Brumbley'S Family ParkHealth-study range5.39 mg/LJan 202648 served BurtonwoodHuman impact likely2.37 mg/LMar 20251,503 served

C

Camden Pump DistrictNatural background0.05 mg/LJun 202617,208 served Camden Wyoming Sewer And Water AuthorityNatural background0.05 mg/LJun 20265,000 served Canterbury Crossing Pump DistrictNatural background0.05 mg/LJan 2026471 served Cape Windsor Community Association IncNatural background0.05 mg/LAug 2024600 served Captain'S WayNatural background0.05 mg/LMar 2026102 served Carey Estates, LlcHealth-study range8.52 mg/LFeb 2026312 served Carpenters RowHuman impact likely2.52 mg/LJan 202660 served Cedar LandingNatural background0.50 mg/LMar 2025357 served Cedar Village LlcHealth-study range5.17 mg/LJan 2026600 served Cherry Creek ValleyHealth-study range9.26 mg/LJun 202678 served Church Creek (Awc)Natural background0.50 mg/LFeb 20269,654 served Clearbrooke Estates Pump DistrictNatural background0.67 mg/LJun 2026768 served Colonial Estates Mobile Home ParkNatural background0.05 mg/LMar 2026165 served Cooper Farm Pump DistrictNatural background0.05 mg/LJun 2026249 served Country Club Village (Tui)Natural background0.96 mg/LJun 2026192 served Country GroveNatural background0.94 mg/LJun 2026426 served Country Living Mobile CourtNatural background0.05 mg/LMar 2026255 served Country Rest HomeNatural background0.05 mg/LJan 202665 served Countryside EstatesNatural background0.05 mg/LJan 202650 served Countryside HamletHuman impact clear4.86 mg/LMay 202466 served County Seat GardensHealth-study range5.40 mg/LJun 2025297 served Crosswinds Mhp, LlcAbove the federal limit10.73 mg/LApr 2026210 served

D

Dagsboro Water DeptHuman impact likely2.82 mg/LJul 2024934 served Deer MeadowsNatural background0.50 mg/LFeb 2026534 served Delaware City Water Department (Awc)Natural background0.50 mg/LJun 20252,610 served Delaware Correctional CenterNatural background0.50 mg/LApr 20252,000 served Delmar Utility Comm (Tn of Delmar)Human impact clear3.24 mg/LJun 20262,027 served Dewey Beach Water DepartmentHealth-study range5.06 mg/LJul 202531,000 served Dove EstatesNatural background0.05 mg/LMar 2026111 served Dove RunNatural background0.05 mg/LJun 2026909 served Dover Air Force BaseNatural background0.05 mg/LJun 202611,000 served Dover Air ParkNatural background0.05 mg/LJan 2026252 served Dover Water DepartmentNatural background0.05 mg/LJun 202639,491 served Drawyers Creek Pump DistrictNatural background0.05 mg/LMar 2026192 served

E

East Ncc DistrictNatural background0.15 mg/LJun 20265,538 served Eds Mobile Home ParkNatural background0.05 mg/LJan 202466 served Enchanted Acres Mhc LlcHuman impact likely2.56 mg/LJan 2026225 served Evergreen Post AcuteNatural background0.05 mg/LFeb 2026256 served

F

Felton Water DepartmentNatural background0.05 mg/LJun 20261,591 served Fish Hook Mobile Home ParkAbove the federal limit18.67 mg/LJun 202672 served Fishermans Village (Tui)Natural background0.05 mg/LJun 2026129 served Flying Dutchman Mobile Home Park 2Health-study range5.79 mg/LJun 202660 served Flying Dutchman Mobile Home Park 3Health-study range5.30 mg/LJan 202681 served Forest Grove Pump DistrictNatural background0.05 mg/LJan 2026330 served Forest ParkHuman impact clear3.82 mg/LJun 202625 served Fox Pointe SubdivisionNatural background0.05 mg/LJan 2026500 served Frederica Pump DistrictNatural background0.05 mg/LJun 2026861 served Frederica Water DepartmentNatural background0.05 mg/LJun 2026950 served Frederick Lodge Pump DistrictNatural background0.05 mg/LMar 2026204 served Friendship CreekHuman impact likely1.94 mg/LJun 2025366 served

G

Gander Woods Pump DistrictNatural background0.69 mg/LJun 202642 served Garrison Lake Pump DistrictHuman impact clear4.22 mg/LJun 202617,148 served Georgetown Water DepartmentHuman impact clear3.16 mg/LJun 20267,259 served Glasgow Pines Iipurchased waterHealth-study range7.70 mg/LApr 2026235 served Granada Mobile Home CourtNatural background0.05 mg/LJun 2026138 served Village of GrandviewHealth-study range6.99 mg/LJan 2026108 served Grants Way Pump District (Tui)Health-study range5.98 mg/LJun 2026639 served Greater Ellendale Water DistrictHuman impact likely1.49 mg/LAug 2025350 served Green Acres Pump DistrictNatural background0.05 mg/LJan 2026213 served Greenwood Country RetirementNatural background0.05 mg/LMar 202650 served Greenwood Life CommunityNatural background0.05 mg/LMar 2026100 served Greenwood Water DepartmentHealth-study range7.51 mg/LJun 2026973 served

H

Harrington Water DepartmentNatural background0.05 mg/LJun 20263,562 served Hartly Mobile Home ParkNatural background0.05 mg/LFeb 202690 served Hedgerow HollowNatural background0.05 mg/LFeb 2026147 served Town of Henlopen AcresHuman impact likely1.35 mg/LJan 2026522 served Hilltop Trailer ParkNatural background0.05 mg/LJan 202665 served Holiday Acres, LlcNatural background0.05 mg/LJun 2025132 served Holly Hill EstatesNatural background0.05 mg/LMar 2026831 served Holly Oak Mobile Home ParkHuman impact clear3.28 mg/LMar 2026210 served Holly View Mobile Home ParkNatural background0.05 mg/LJun 2025207 served Home Town Village of Cool BranchNatural background0.05 mg/LJun 2026654 served Homestead ParkHuman impact clear4.41 mg/LJun 2025230 served Hunter Mill Estates Pump DistrictHuman impact clear4.59 mg/LJan 2025432 served Hunters Pointe Pump DistrictNatural background0.05 mg/LMar 2026261 served Hunters Runpurchased waterHealth-study range7.70 mg/LApr 2026683 served

I

Indian River Acres Pump DistrictHuman impact clear4.81 mg/LFeb 2024300 served Ingram Village (Awc)Human impact likely1.61 mg/LApr 2025498 served Ingrams Point (Awc)Natural background0.50 mg/LApr 202587 served

J

J & J MhpNatural background0.05 mg/LMay 202684 served

K

Kenton Pump DistrictNatural background0.05 mg/LJan 2026465 served Kingsmillpurchased waterHealth-study range7.70 mg/LApr 2026381 served Kitts Hummock Improvement AssocNatural background0.05 mg/LFeb 2026305 served

L

Lakeland/Beechwood Pump DistrictNatural background0.05 mg/LMar 2026459 served Lakeside Home LlcHuman impact clear3.34 mg/LMar 202650 served Laurel Pump DistrictNatural background0.67 mg/LJun 202681 served Laurel Village MhcHuman impact clear3.36 mg/LOct 2025918 served Laurel Water DepartmentHuman impact likely2.01 mg/LJun 20263,984 served Law Mobile Home ParkNatural background0.05 mg/LFeb 202650 served Lewes Board of Public WorksHuman impact clear4.64 mg/LSep 20259,627 served Long Farm Estates Pump DistrictNatural background0.05 mg/LJun 2026123 served Long Neck VillageHuman impact likely2.71 mg/LApr 2026345 served Long Neck Water CompanyHuman impact likely2.59 mg/LJun 202611,000 served Love Creek MhcHealth-study range8.86 mg/LMay 2026210 served

M

Magnolia Water DepartmentNatural background0.05 mg/LJun 2026425 served Mallard LakesNatural background0.05 mg/LJan 20251,500 served Maranatha CourtNatural background0.05 mg/LFeb 202654 served Meadows At Cubbage PondNatural background0.70 mg/LJun 2026201 served Meridian Crossing Apartmentspurchased waterHealth-study range7.70 mg/LApr 2026220 served Messick'S Mhc Llc System 2Natural background0.05 mg/LJan 202436 served Messick'S Mhc Llc System 3Natural background0.05 mg/LJan 202445 served Messick'S Mhc Llc System 4Natural background0.05 mg/LJan 202472 served Messick'S Mhc Llc System 5Natural background0.05 mg/LJan 202697 served Messick'S Mhc Llc System 6Natural background0.05 mg/LJan 202463 served Middletown Water DepartmentNatural background0.05 mg/LJun 202617,700 served Milford Water DepartmentNatural background0.05 mg/LJun 20269,800 served Millsboro Water DepartmentNatural background0.05 mg/LJun 20268,568 served Milton Water DepartmentHuman impact clear3.65 mg/LJun 20263,200 served Misty Pines Pump DistrictNatural background0.05 mg/LMar 2026168 served Mobile Gardens INatural background0.05 mg/LMar 2026476 served Mt Pleasant Mhp, LlcNatural background0.05 mg/LJan 2026117 served Municipal Services CommissionHuman impact clear4.05 mg/LJun 20265,549 served

N

New Market VillageNatural background0.05 mg/LMar 2026321 served Newark Water DepartmentHuman impact clear4.81 mg/LJun 202640,000 served North West Pump DistrictNatural background0.05 mg/LJun 20264,149 served

O

Oak Grove EstatesNatural background0.05 mg/LJan 2026150 served

P

Paradise EstatesNatural background0.50 mg/LApr 2025126 served ParksideNatural background0.05 mg/LJun 20261,467 served Pepper Creek District (Tui)Natural background0.73 mg/LJun 2026414 served Pepper Ridge Parkpurchased waterNatural background0.05 mg/LJun 2026209 served Pine Ridge Mobile Home ParkHealth-study range6.65 mg/LApr 2025222 served Pine Valley Mobile Home ParkHealth-study range5.33 mg/LJun 2026145 served Pinewood AcresNatural background0.05 mg/LMay 20251,200 served Pleasant Acres, LlcHuman impact likely1.01 mg/LJun 202560 served Point FarmNatural background0.05 mg/LFeb 2025270 served Ponds of Odessa (Awc)Natural background0.50 mg/LApr 2025216 served Ponds of Willow GroveNatural background0.05 mg/LJan 2026126 served

Q

Quillens PointNatural background0.05 mg/LJul 2025150 served

R

Rehoboth Bay CommunityHuman impact likely1.69 mg/LJan 20261,575 served Rehoboth Beach Water DepartmentHealth-study range7.43 mg/LJun 202625,000 served Rehoboth Pump District (Tui)Human impact clear3.24 mg/LJun 202681,417 served

S

Sand Hill AcresNatural background0.05 mg/LJun 2025384 served Sand Hill Mobile Home ParkNatural background0.70 mg/LJun 2025120 served Sandy Ridge Pump DistrictNatural background0.05 mg/LApr 2026243 served Scottsdale Mobile Home ParkHealth-study range6.22 mg/LMar 2026300 served Sea Winds Pump DistrictNatural background0.05 mg/LMar 2024141 served Seaford Water DepartmentHealth-study range8.13 mg/LJun 20266,699 served Seaglass At Rehoboth BeachHuman impact clear3.26 mg/LJan 2025674 served Selbyville Water DepartmentNatural background0.05 mg/LJun 20263,502 served Serenity Manor EstatesNatural background0.05 mg/LJan 2026110 served Shady Acres Mobile Home ParkNatural background0.05 mg/LMar 2026152 served Shady Oak Trailer CourtNatural background0.53 mg/LJun 2025108 served Shawns Hideaway System #1Human impact clear4.02 mg/LJan 2026341 served Silver View FarmHuman impact clear3.50 mg/LJan 2026398 served Slaughter Beach PwsNatural background0.50 mg/LMay 2025846 served Smyrna Water DepartmentHuman impact clear3.59 mg/LJun 202611,813 served South East Pump DistrictNatural background0.15 mg/LMar 2026936 served South Shores (Tui)Natural background0.05 mg/LJun 2026402 served Southwood Acres Pump DistrictNatural background0.15 mg/LMar 2026591 served St Andrews Apartment New Additionpurchased waterHealth-study range7.70 mg/LApr 2026272 served St Andrews Apartmentspurchased waterHealth-study range7.70 mg/LApr 2026360 served St Andrews Single Family Homespurchased waterHealth-study range7.70 mg/LApr 2026120 served Stage Village MhcHuman impact likely1.96 mg/LMar 202693 served Stockley CenterHealth-study range7.73 mg/LSep 2025749 served Strimel'S Mhp Llc.Natural background0.05 mg/LFeb 202640 served Summit Pond Pump DistrictNatural background0.05 mg/LMar 2026177 served Sussex Manor Mobile Home ParkHealth-study range8.46 mg/LMar 2026195 served Sussex Shores Water CompanyHuman impact likely2.69 mg/LSep 202512,450 served Swann KeysNatural background0.05 mg/LAug 20251,764 served Sycamore Chase (Awc)Human impact clear3.23 mg/LMay 2025291 served

T

Tall Pines Resort Community Sys1Human impact likely2.77 mg/LJun 2026538 served Tall Pines Resort Community Sys2Health-study range5.06 mg/LJan 202653 served Tall Pines Resort Community Sys4Health-study range5.89 mg/LJun 202679 served Teal Point (Tui)Natural background0.47 mg/LJun 2026117 served The Vines of Sandhill (Awc)Human impact clear4.80 mg/LApr 2026336 served Todds Mobile CourtNatural background0.05 mg/LApr 2025189 served Twin Maples Trailer ParkNatural background0.05 mg/LFeb 2026123 served

U

Upcountry Manufactured Home CommunityHuman impact likely1.73 mg/LMar 202665 served

V

Veolia Water Delaware, IncHuman impact likely2.75 mg/LApr 2026100,495 served Villagebrookpurchased waterNatural background0.05 mg/LJun 2026847 served Voshells Cove Pump DistrictNatural background0.05 mg/LMar 2026252 served

W

White Oak SubdivisionNatural background0.05 mg/LFeb 202630 served Wild Quail Pump DistrictNatural background0.05 mg/LJun 20261,017 served Willow Grove MillNatural background0.05 mg/LJun 20263,090 served Willow Lake Pump DistrictHuman impact clear3.39 mg/LApr 2025120 served Willow Tree Properties LlcNatural background0.05 mg/LFeb 2026123 served Wilmington Water DepartmentHuman impact likely2.44 mg/LJun 2026107,976 served WinterthurHuman impact likely1.11 mg/LApr 2026687 served Woodland Trailer CourtNatural background0.05 mg/LJan 202641 served Woodlands of Millsboro Pump DistrictNatural background0.05 mg/LApr 2025171 served Woods Edge Mobile Home ParkNatural background0.05 mg/LMar 202645 served

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NitrateSmart

Nitrate in community water systems, from the utilities’ own compliance reporting.

Results reaching back to July 2023 · current through August 9, 2026.

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