
Wilmington, Delaware | Municipal Water Utility Company | Public Service Announcement
Residents receiving water from Wilmington Water Department may experience quality issues due to several contaminants including Metribuzin, 1,2,4-Trimethylbenzene and Di(2-ethylhexyl) adipate, along with elevated water hardness levels. The utility serves this community with municipal water sourced primarily from Surface water supplies.
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Wilmington Water Department Area Details

Area served:
Wilmington, Delaware

Population served:
108537

Water source:
Surface water

Phone:
302-576-3878

Address:
800 North French Street, Willmington, DE 19801

3date
Contaminants Detected In Wilmington, Delaware
Bromodichloromethane; Chlorate; Chloroform; Chromium (hexavalent); Dibromochloromethane; Dichloroacetic acid; Total trihalomethanes (TTHMs); Trichloro… more

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Wilmington Water Department
Annual Municipal Water Report
Comprehensive List of Water Contaminants Evaluated by Wilmington Water Department
Tested But Not Detected:
1,1,1,2-Tetrachloroethane; 1,1,1-Trichloroethane; 1,1,2,2-Tetrachloroethane; 1,1,2-Trichloroethane; 1,1-Dichloroethane; 1,1-Dichloroethylene; 1,1-Dichloropropene; 1,2,3-Trichlorobenzene; 1,2,3-Trichloropropane; 1,2,4-Trichlorobenzene; 1,2,4-Trimethylbenzene; 1,2-Dibromo-3-chloropropane (DBCP); 1,2-Dichloroethane; 1,2-Dichloropropane; 1,3,5-Trimethylbenzene; 1,3-Butadiene; 1,3-Dichloropropane; 17-beta-Estradiol; 2,2-Dichloropropane; 2,4,5-T; 2,4,5-TP (Silvex); 2-Chloroethylvinyl ether; 2-Hexanone; 3-Hydroxycarbofuran; 4-Androstene-3,17-dione; Acenaphthene; Acenaphthylene; Acetone; Acrylonitrile; Alachlor (Lasso); Aldicarb; Aldicarb sulfone; Aldicarb sulfoxide; Aldrin; alpha-Chlordane; alpha-Lindane; Altyl chloride; Anthracene; Antimony; Atrazine; Baygon (Propoxur); Benzene; Benzo[a]anthracene; Benzo[a]pyrene; Benzo[b]fluoranthene; Benzo[g,h,i]perylene; Benzo[k]fluoranthene; Beryllium; beta-BHC; Bromobenzene; Bromochloromethane; Bromomethane; Butachlor; Butyl benzyl phthalate; Cadmium; Carbaryl; Carbofuran; Carbon tetrachloride; Chlordane; Chlorodifluoromethane; Chloroethane; Chloromethane; Chrysene; cis-1,2-Dichloroethylene; cis-1,3-Dichloropropene; Cobalt; delta-BHC; Di(2-ethylhexyl) adipate; Di(2-ethylhexyl) phthalate; Di-n-butyl phthalate; Di-n-octyl phthalate; Dibenz[a,h]anthracene; Dibromomethane; Dicamba; Dichlorodifluoromethane; Dichloromethane (methylene chloride); Dieldrin; Diethyl phthalate; Dimethyl phthalate; Dinoseb; Endosulfan I; Endosulfan II; Endosulfan sulfate; Endrin; Endrin aldehyde; Equilin; Estriol; Estrone; Ethinyl estradiol; Ethyl methacrylate; Ethylbenzene; Ethylene dibromide; Fluoranthene; Fluorene; gamma-Chlordane; Heptachlor; Heptachlor epoxide; Hexachlorobenzene (HCB); Hexachlorobutadiene; Hexachlorocyclopentadiene; Indeno[1,2,3-cd]pyrene; Iodomethane; Isopropylbenzene; Lindane; m- & p-Xylene; m-Dichlorobenzene; Mercury (inorganic); Methiocarb; Methomyl; Methoxychlor; Methyl ethyl ketone; Methyl isobutyl ketone; Methyl methacrylate; Metolachlor; Metribuzin; Monochlorobenzene (chlorobenzene); MTBE; n-Butylbenzene; n-Propylbenzene; Naphthalene; Nitrite; o-Chlorotoluene; o-Dichlorobenzene; o-Xylene; Oxamyl (Vydate); p-Chlorotoluene; p-Dichlorobenzene; p-Isopropyltoluene; Para-para DDE; Para-para DDT; Para-para DDT; Pentachlorophenol; Perfluorobutane sulfonate (PFBS); Perfluoroheptanoic acid (PFHPA); Perfluorohexane sulfonate (PFHXS); Perfluorononanoic acid (PFNA); Perfluorooctane sulfonate (PFOS); Perfluorooctanoic acid (PFOA); Phenanthrene; Picloram; Polychlorinated biphenyls (PCBs); Propachlor; Pyrene; sec-Butylbenzene; Selenium; Simazine; Strontium-89; Strontium-90; Styrene; tert-Butylbenzene; Testosterone; Tetrachloroethylene (perchloroethylene); Tetrahydrofuran; Thallium; Toluene; Toxaphene; trans-1,2-Dichloroethylene; trans-1,3-Dichloropropene; trans-1,4-Dichloro-2-butene; Trichloroethylene; Trichlorofluoromethane; Trifluralin; Vinyl acetate; Vinyl chloride; Xylenes (total)

What's in your tap water?

Discover which contaminants exceed Legal and Health Guidelines in your water supply.
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Wilmington Water Department
About Us
The Wilmington Water Division monitors over 100 potential contaminants, including pesticides, herbicides, Cryptosporidia, Giardia, and coliform bacteria. Water samples are regularly collected from multiple sources including:
- Brandywine Creek
- Hoopes Reservoir
- Porter Tank
- Cool Spring Tank
- Filtration facilities
- Customer taps throughout the distribution system
Last year, technicians collected more than 40,000 water samples from the city's water sources, treatment plants, and distribution network. The laboratory conducted over 70,000 analyses on these samples, confirming that Wilmington's water system meets all applicable EPA drinking water standards.
During the disinfection process, certain byproducts form as chlorine reacts with naturally occurring organic materials. These byproducts are carefully regulated to maintain effective disinfection while keeping byproduct levels minimal.
State regulations permit less frequent monitoring for some contaminants when their concentrations remain stable. In such cases, the most recent sample data will be noted in reports, even if older than 12 months.
If present, elevated lead levels can pose serious health risks, particularly for pregnant women and young children. Lead in tap water primarily comes from materials in service lines and household plumbing. While Wilmington provides high-quality water, we cannot control the materials used in plumbing components. To reduce potential lead exposure, consider running your tap for 30 seconds to 2 minutes before using water for drinking or cooking, especially after long periods of non-use. For concerns about lead, water testing information is available through the Safe Drinking Water Hotline (1-800-426-4791) or at www.epa.gov/safewater/lead.
The Division of Public Health and Department of Natural Resources and Environmental Control (DNREC) have conducted source water assessments for most community water systems statewide. For assessment information, contact the City at (302) 573-5522 or visit www.delawaresourcewater.org.

For comprehensive information about your municipal water supply, visit the U.S. Environmental Protection Agency:
Wilmington Water Department Municipal Water Company and EPAWilmington Water Department Municipal Water Report Information
The EPA requires all municipal water providers to regularly test for regulated contaminants and publish annual Consumer Confidence Reports. These reports detail water quality parameters, compliance with federal standards, and potential health risks.
Wilmington's water treatment process includes multiple barriers against contamination, including filtration, sedimentation, and disinfection protocols. Regular monitoring ensures early detection of any emerging water quality issues.
Local residents should be aware that home water filters may provide additional protection against certain contaminants, but require regular maintenance to remain effective.
Municipal Water Utility Company FAQ

For additional health information about your municipal water, visit the U.S. CDC:
Wilmington Water Department Municipal Water Company and CDC- How often is Wilmington's municipal water tested?
Wilmington conducts daily, weekly, and monthly testing based on regulatory requirements and specific contaminants.
- What causes water hardness in Wilmington?
Water hardness primarily results from dissolved calcium and magnesium from the local limestone geology.
- Should I use a water filter at home?
While Wilmington's water meets safety standards, home filtration can address taste preferences and further reduce certain contaminants.
- How can I report water quality concerns?
Contact the Wilmington Water Department at 302-576-3878 for immediate assistance with quality issues.

Wilmington Water Department provides municipal water services to residents and businesses in Willmington and Wilmington, Delaware.
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