Get your water tested in Delaware.
The short answer
Delaware’s list has 13 labs certified to test drinking water, all in other states.
Delaware’s list gives each lab’s name and website, not its town or what it is certified to test for. Towns the list doesn’t give are from other states’ lists. These labs it names are left out, because no list gives one town for each: Aerobiology Lab Associates, Alpha Analytical, EMSL Analytical, PFAS Solutions and Suburban Testing Labs.
Certification is test by test, so check that a lab is certified for what you want tested, and call first: it will say which bottles to use and how soon the sample has to arrive.
From the state
Delaware Division of Public Health
Test kits for private well owners, for bacteria plus nitrate, nitrite, iron, fluoride, sodium, hardness and other minerals. Pick one up and bring it back on a weekday at state health offices, including Newark, Smyrna and Georgetown. No charge for the kit or the testing.
Private Drinking Water, Delaware Health and Social Services, checked Oct. 10, 2026
Labs in other states
13 labs Delaware certifies outside the state, by state and city. Ask whether a lab takes samples by mail, and how fast they have to arrive.
| Lab | City | Phone | Certified for |
|---|---|---|---|
| Eurofins Eaton AnalyticalWebsite: Eurofins Eaton Analytical | Pomona, CA | Not listed | Not listed |
| Florida Radiochemistry Services, Inc. | Orlando, FL | (407) 382-7733 | Not listed |
| Pace Analytical Services – Ormond BeachWebsite: Pace Analytical Services – Ormond Beach | Ormond Beach, FL | Not listed | Not listed |
| Eurofins Eaton Analytical – South BendWebsite: Eurofins Eaton Analytical – South Bend | South Bend, IN | Not listed | Not listed |
| Water Testing Laboratories of MDWebsite: Water Testing Laboratories of MD | Salisbury, MD | Not listed | Not listed |
| Chesapeake Environmental LabWebsite: Chesapeake Environmental Lab | Stevensville, MD | Not listed | Not listed |
| Water Testing Laboratories of MDWebsite: Water Testing Laboratories of MD | Stevensville, MD | Not listed | Not listed |
| Pace Analytical Services – MelvilleWebsite: Pace Analytical Services – Melville | Melville, NY | Not listed | Not listed |
| AllowayWebsite: Alloway | Marion, OH | Not listed | Not listed |
| Brandywine Science Center, Inc.Website: Brandywine Science Center, Inc. | Kennett Square, PA | Not listed | Not listed |
| ALS Environmental – MiddletownWebsite: ALS Environmental – Middletown | Middletown, PA | Not listed | Not listed |
| Pace Analytical Services – WilliamsportWebsite: Pace Analytical Services – Williamsport | Williamsport, PA | Not listed | Not listed |
| Analytical Services, Inc.Website: Analytical Services, Inc. | Williston, VT | Not listed | Not listed |
What to ask a lab to test
- On a private well: no one else tests it. What to test a well for, and how often.
- On city water: your utility tests what leaves the plant, not what your own pipes add. Testing your tap for lead.
- What it costs: fees vary by lab and by test, and some states test wells for free. What a water test costs.
- Anything your utility’s report flags: a lab certified for that contaminant can test your own tap. Delaware utilities’ reports.
Source: Delaware Office of Drinking Water, approved laboratories, read Oct. 10, 2026. Labs are listed as the state lists them; what each is certified for is as far as the list says. Certifications change, so a lab’s own word is the latest.
A lab named for a water utility is listed apart. Distances on town pages are straight lines between ZIP code centers from the Census 2020 gazetteer. How labs are listed here.
Where to go next
- Testing a private wellWhat to test for every year, what else depends on where you live, and reading the results.How to test well water
- Delaware utilitiesEvery utility with a full report: what its results show, and its violations.Delaware tap water
- Labs in other statesEvery state TapBuff has read, and where to find the rest.Certified labs by state