Know Your Environment. Protect Your Health.

STATE

Delaware

CONTAMINANTS

99

serves

877,000

data

2013-2024

UTILITIES

203

Overview

EWG's drinking water quality report for Delaware shows results of tests conducted by the water utilities in Delaware and provided to EWG by the Delaware Health and Social Services - Division of Public Health.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS

Large utilities in Delaware

Below are utilities in Delaware serving over 10,000 people, listed alphabetically.

UtilityLocationPeople Served
Artesian Water CompanyNewark, DE301,000
Camden DistrictDover, DE17,208
Dover Air Force BaseDover, DE11,000
Dover Water DepartmentDover, DE39,491
Garrison Lake Pump DistrictDover, DE13,467
Middletown Water DepartmentMiddletown, DE17,700
Newark Water DepartmentNewark, DE40,000
Rehoboth DistrictDover, DE29,661
Smyrna Water DepartmentSmyrna, DE11,813
South BethanyNewark, DE13,511
Veolia Delaware OperationsWilmington, DE100,495
Wilmington Water DepartmentWilmington, DE107,976

Utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Delaware

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople ServedViolation Points
Home Town Village Of Cool BranchSeaford, DE65420
Hilltop Trailer ParkDenton, DE653
Stockley CenterGeorgetown, DE7492
Oak Grove EstatesDover, DE1502
Villas of GrandviewDover, DE1082
Countryside EstatesSmyrna, DE501
Pine Ridge Mobile Home ParkSeaford, DE2221
Forest ParkMillsboro, DE461
County Seat GardensGeorgetown, DE2971
Greenwood Country RetirementGreenwood, DE501
Woodlands Of Millsboro Pump DistrictDover, DE1711
Barkers LandingMagnolia, DE4981

Large utilities that accumulated/accrued the most violation points as of July 2021 to June 2024 in Delaware

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople ServedViolation Points

Contaminants found in Delaware above health guidelines

Found above health guidelines Found
Contaminant # of Utilities People Served # of Utilities People Served
Bromodichloromethane139864,971140865,013
Total trihalomethanes (TTHMs)131864,113131864,113
Chloroform119846,078143865,909
Dibromochloromethane116822,158125853,261
Haloacetic acids (HAA5)85816,35585816,355
Radium, combined (-226 & -228)156805,712167818,366
Dichloroacetic acid98797,727104842,267
Nitrate & nitrite112771,103123784,336
Nitrate112771,103118777,580
Trichloroacetic acid81761,99483792,329
Dibromoacetic acid51731,67051731,670
Chromium (hexavalent)19693,89519693,895
Haloacetic acids (HAA9)16680,73216680,732
Perfluorooctanoic acid (PFOA)15621,27815621,278
Perfluorohexane sulfonate (PFHXS)9370,5669370,566
Bromochloroacetic acid1107,9761107,976
Perfluoroundecanoic acid (PFUnA)1100,4951100,495
Perfluorodecanoic acid (PFDA)1100,4951100,495
Perfluorononanoic acid (PFNA)1100,4951100,495
Perfluorooctane sulfonate (PFOS)769,81712393,983
Arsenic2166,7202166,720
Bromoform1223,57967565,131
Tetrachloroethylene (perchloroethylene)17,2596331,425
Benzene121639,347
Heptachlor epoxide2215312,028
Vinyl chloride119035,292
1,2-Dibromo-3-chloropropane (DBCP)11261126
Chlordane1100211,913
Cadmium190190
Polychlorinated biphenyls (PCBs)160160

Contaminants found in Delaware above legal limits

Contaminant # of Utilities People Served

What filter type is right for you?

Water
Contaminants

view utility

Carbon Filters

Can reduce the levels of many common contaminants.

pros

  • Lower upfront cost
  • Reduced maintenance

cons

  • Does not remove all contaminants

Reverse Osmosis

Most effective at reducing contaminants.

pros

  • Most effective

cons

  • Higher upfront cost
  • Requires more maintenance
  • Wastes water

Other Considerations

Ion Exchange

Pros: Softens hard water, Reduces some contaminants

Cons: Doesn't remove all contaminants

Whole-House Filters

Pros: Useful for reducing radiologicals and TCE

Cons: Expensive to install and maintain, Risk of bacterial contamination

Distillation

Pros: Removes heavy metals and harmful microbes

Cons: Does not reduce most contaminants

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