New Castle County water treatment
Water treatment for Wilmington, Newark, Middletown, Bear & Hockessin: Delaware's new PFAS limits, utility EPA records, and a free water analysis.
Where New Castle County's water comes from
New Castle County is served by the City of Wilmington, the City of Newark, Artesian Water Company, Middletown, and other systems, with private wells in rural areas.
Key issues
- PFAS: Delaware's PFOA and PFOS limits of 4.0 ppt took effect in January 2026[1]. Utilities post results on Delaware Drinking Water Watch[2].
- Utility PFAS results: the City of Newark (PFOA up to 25.3 ppt) and Artesian Water (PFOA up to 23.1 ppt) were among systems reporting PFOA above 4.0 ppt in EPA UCMR 5 sampling[3].
- Private wells: Delaware's Division of Public Health recommends testing every year for nitrate and bacteria, and offers free test kits and financial aid for well owners[4]. See nitrate.
Towns
Common problems here
Check your ZIP in New Castle County, DE
Look up what your local water utility has reported to the EPA, then take a 60-second quiz about what you see, taste, and smell at home. We'll use both to recommend the right solution.
Get your water report
Enter your ZIP code to see your utility's violations, lead testing, and PFAS results from public EPA records, explained in plain English.
Data comes from U.S. EPA and Census public records. It covers public water systems, not private wells, and it isn't a test of your home's tap. If you're on a well, a free in-home test is the best way to know what's in your water.
Step 2
Your recommended solution
Based on your water report and quiz answers.
Common questions
How do I find out what's in my water in New Castle County, DE?
Enter your ZIP in our free report for your utility's EPA records, check your utility's annual water quality report (CCR), or book a free in-home test. On a private well, use a state-certified lab for health-related tests.
Does WÜDR install in New Castle County, DE?
Yes. We serve Pennsylvania, New Jersey, and Delaware. Enter your ZIP in the help form and we'll confirm your address.
Clean water starts with knowing what's in it.
Sources
- Delaware Public Health: PFAS in Delaware public drinking water. publichealthalerts.delaware.gov/pfas-in-delaware-public-drinking-water/
- Delaware Drinking Water Watch. drinkingwater.dhss.delaware.gov/
- U.S. EPA: UCMR occurrence data. www.epa.gov/dwucmr/occurrence-data-unregulated-contaminant-monitoring-rule
- Delaware DPH: Financial aid program and free water testing kits for private well owners (Aug 31, 2023). news.delaware.gov/2023/08/31/dph-launches-new-financial-aid-program-for-private-well-owners-offers-free-water-testing-kits-to-delaware-residents/
EPA records retrieved Oct 2026 from the EPA SDWIS and UCMR 5 public datasets. Utility records describe a water system, not the tap in your home. Records can lag and may be incomplete.