privatewelldata / States / Delaware
Delaware well water testing
Delaware keeps an official list of certified drinking-water labs. Updated 2026-10-18.
Official lab list for Delaware
How to choose a lab
- Pick a lab on the official list above that is certified for each test you need (bacteria and chemistry are often separate certifications).
- Ask for the lab’s own sample bottles and instructions; bacteria samples usually must reach the lab within 24–30 hours.
- Compare prices for a basic package (bacteria, nitrate, pH/TDS) and add arsenic or other metals where local data shows a risk.
- Be wary of free in-home tests from treatment-system sellers — see our salesperson checklist.
Questions
Where can I get my well water tested in Delaware?
Use the official certified-lab list linked on this page; call the lab to confirm it accepts private well samples and is certified for the tests you need.
What should I test my well for in Delaware?
Test every year for bacteria (total coliform and E. coli), nitrate, pH and total dissolved solids (CDC). Use our test helper for a list that fits your home.