Water Testing Labs of Virginia
- Coliform Bacteria
Fairfax County Health Department Joanne Jorgenson Laboratory is a county health department lab in Fairfax, VA (Fairfax County). It is on the Virginia drinking water program's list of certified laboratories (certificate VA00030), and we last checked the list on September 29, 2026.
The lab takes samples from homeowners.
Before you go: Certified by the Virginia Division of Consolidated Laboratory Services for drinking water analyses (EPA lab ID VA00030): Microbiology, Inorganic chemistry, Metals. Certification expires 2027-06-30. County health laboratory; the usual place for a bacteria test on a private well. Call for bottles, drop-off days and pricing.
This profile is built from the official state list of certified drinking water laboratories, checked on September 29, 2026. Well Water Insider does not rate or endorse labs. Run this lab? Claim the profile to add prices, turnaround times, hours and a description.
Listed on the official state certified laboratory list.
How this lab takes samples, based on its listing. Call to confirm hours, bottles and prices.
Published lab fees in Virginia: $70 for a bacteria test that also covers nitrate. Virginia Household Water Quality Program clinics: $70 covers 14 tests including bacteria and nitrate. Prices at this lab may differ.
Bacteria samples need a sterile bottle from the lab. Chemistry samples usually take a clean container the lab supplies.
Skip softeners and filters. Remove the aerator, run the water 3 to 5 minutes, then fill without touching the inside of the cap.
Bacteria samples are time-sensitive. Use a cooler with ice packs and hand it in or ship it the same day.
Compare results with EPA drinking water limits. If anything is over, our problem pages explain what it means and how to treat it.
From the state certification list and the lab's own listing. Ask which ones it runs for homeowners.
Natural in some bedrock, with no taste or smell. The EPA limit is 0.010 mg/L. Learn more
Total coliform and E. coli. The test the CDC recommends every year for every private well. Learn more
The cause of orange and black stains. EPA guidelines are 0.3 and 0.05 mg/L. Learn more
Usually from plumbing and older well parts. EPA says there is no safe level. Learn more
From fertilizer, manure and septic systems. The EPA limit is 10 mg/L as nitrogen. Learn more
10310 Layton Hall Drive, Fairfax, VA 22030
Lab address
Yes. It is on the Virginia list of laboratories certified for drinking water testing, last checked September 29, 2026.
Its listing covers arsenic, coliform bacteria, iron and manganese, lead and nitrate / nitrite. Call to confirm prices and which tests it runs for private well owners.
Yes, the listing says it takes homeowner samples. Get the right bottle from the lab first, especially for bacteria.
Call (703) 277-3253 and visit the lab's website. The address is 10310 Layton Hall Drive, Fairfax, VA 22030.