Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Delaware Water Quality Reports
Water quality scores for 10 cities in Delaware
Newark
33,673 residents
Middletown
23,192 residents
Elsmere
5,814 residents
Dover
39,403 residents
New Castle
5,302 residents
Georgetown
7,436 residents
Wilmington
70,898 residents
Smyrna
12,583 residents
Milford
11,463 residents
Seaford
8,310 residents
About Delaware Water Quality
This state's water quality reflects local geographic conditions, industrial activities, and water infrastructure. Water quality can vary significantly between communities, with some areas enjoying excellent tap water while others face contamination challenges requiring treatment.
Based on our analysis of 10 cities in Delaware, the average water quality score is 83/100. 1 cities have water quality scores below 70, indicating potential concerns that residents should be aware of. The highest-rated city is Seaford with a score of 59/100, while Newark has the most room for improvement at 95/100.
Water Sources in Delaware
Water sources typically include a combination of surface water (rivers, lakes, reservoirs) and groundwater. The specific sources serving your community depend on local geography and infrastructure. Check your local water utility's Consumer Confidence Report for details about your water source.
Common Water Contaminants in Delaware
These contaminants have been detected in various Delaware water systems
Delaware Water Regulations
State environmental and health agencies oversee drinking water quality in compliance with federal EPA standards. Public water systems are required to test regularly and report results to residents through annual Consumer Confidence Reports.
Health Considerations
Water quality concerns vary by location. Common issues include lead from older plumbing, agricultural runoff in rural areas, and industrial contamination near manufacturing sites. Check your local water quality report and consider testing if you have specific concerns.
Recommendations for Delaware Residents
Review your annual Consumer Confidence Report to understand local water quality. Consider having your water tested if you use a private well or have concerns about your plumbing. Water filters certified to remove specific contaminants can address most common water quality issues.
Frequently Asked Questions About Delaware Water Quality
Is Delaware's tap water safe to drink?
Most Delaware cities have tap water that meets EPA safety standards. With an average score of 83/100 across 10 cities we analyzed, Delaware generally has good water quality. However, water quality varies by location, so check your specific city's report.
What are the main water quality concerns in Delaware?
The most common water quality concerns in Delaware include disinfection byproducts (chlorination), lead (older infrastructure), nitrates (agricultural areas). These contaminants can come from natural sources, industrial activities, or aging infrastructure. Review your city's specific report to see which contaminants affect your area.
Should I use a water filter in Delaware?
Whether you need a water filter depends on your specific location and health concerns. With 1 cities in Delaware showing elevated contaminant levels, residents in those areas may benefit from filtration. Look for filters certified by NSF/ANSI to remove the specific contaminants found in your area.
Where can I find my Delaware water quality report?
Public water systems in Delaware are required to provide annual Consumer Confidence Reports (CCRs) to residents. You can usually find your report on your water utility's website, request it by phone, or access it through the EPA's database. Our city-level reports above summarize key information from these official sources.