Labs certified for nitrate50
50 named for nitrate itself on the list.
Marked as taking public samples0
Per the state list or a state web page. Call to confirm.
Out-of-state labs32
Located outside Virginia but on its list.
People on private wells (2015)1,558,115
USGS estimate for Virginia.
How many labs test for nitrate in Virginia
50 labs on Virginia's official drinking-water lab list are certified to test for nitrate. All 50 are named for nitrate on the list. The Virginia list does not say which labs take samples from homeowners, so call a lab before you send one. 32 are located outside Virginia.
The list is published by the Virginia Division of Consolidated Laboratory Services (DCLS). List version on file: Current as of 8/1/2026. Fetched 2026-11-15 (UTC).
Virginia labs certified for nitrate
| Lab | Location | Nitrate certification | Public samples | Cert. expiry |
|---|---|---|---|---|
| Addison-Evans Water Production & Laboratory Facility | Midlothian, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Alliance Technical Group, LLC-Akron | Cuyahoga Falls, OH | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| ALS Environmental- Middletown | Middletown, PA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Blue Ridge Analytical LLC | Wytheville, VA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| E M S L Analytical, Inc. | Cinnaminson, NJ | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Environmental Monitoring, Inc. | Norton, VA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Environmental Systems Service, LTD.- Culpeper | Culpeper, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Eurofins Lancaster Laboratories Environment Testing, LLC | Lancaster, PA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Eurofins Pomona | Pomona, CA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Eurofins Raleigh | Cary, NC | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Eurofins South Bend | South Bend, IN | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Fairfax County Health Department Joanne Jorgenson Laboratory | Fairfax, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Fairfax Water | Herndon, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Fredericktowne Labs | Myersville, MD | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| GEL Laboratories, LLC | Charleston, SC | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| H2O Quality Laboratory a Division of Prince William Water | Woodbridge, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| HRSD Central Environmental Laboratory | Virginia Beach, VA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Inboden Environmental Services, Inc. | Mount Jackson, VA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Jennings-Thompson Laboratories, Inc. | Virginia Beach, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Loudoun Water Laboratory | Ashburn, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Maryland Spectral Services, Inc. | Halethorpe, MD | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Microbac Laboratories Inc., Baltimore Division | Baltimore, MD | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Mid-Atlantic Laboratories, Inc. | Port Royal, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| National Testing Laboratories, Ltd. | Ypsilanti, MI | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| NSF International | Ann Arbor, MI | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Onterris Laboratories, LLC | Richmond, VA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical National Center for Testing & Innovation | Mount Juliet, TN | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical Services, LLC - Altoona, PA | Altoona, PA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical Services, LLC - Asheville NC | Asheville, NC | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical Services, LLC - Beaver WV | Beaver, WV | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical Services, LLC - East Longmeadow, MA | East Longmeadow, MA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical Services, LLC - Eden NC | Eden, NC | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical Services, LLC - Kentucky - Pikeville | Pikeville, KY | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Pace Analytical Services, LLC - Madisonville | Madisonville, KY | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical Services, LLC - Ormond Beach FL | Ormond Beach, FL | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Pace Analytical Services, LLC - Westborough MA | Westborough, MA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Phase Separation Science, Inc | Baltimore, MD | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Schneider Laboratories Global, Inc. | Richmond, VA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| SGS - Dayton | Dayton, NJ | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Spotsylvania County Laboratory Services | Fredericksburg, VA | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Universal Laboratories - Hampton | Hampton, VA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Washington Aqueduct Laboratory | Washington, DC | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Water Tech Labs Inc. | Granite Falls, NC | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Water Testing Labs of Maryland, Inc. / Chesapeake Labs, Inc. - Stevensville | Stevensville, MD | Named on the official list | Public samples: ask the lab | 6/30/2027 |
| Waypoint Analytical - Charlotte | Charlotte, NC | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| Weck Laboratories, Inc. | Industry, CA | Named on the official list | Public samples: ask the lab | 9/30/2026 Date on list has passed |
| American Water Central Laboratory | Belleville, IL | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | 9/30/2026 Date on list has passed |
| Aqua Pennsylvania | Bryn Mawr, PA | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | 6/30/2027 |
| City of Norfolk Department of Utilities Water Quality Laboratory | Norfolk, VA | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | 6/30/2027 |
| Newport News Waterworks Water Quality Laboratory | Yorktown, VA | Named on the official list | Public samples: ask the lab Looks like a utility or municipal lab, judging by the name (our label, not the state list) | 6/30/2027 |
How the Virginia list marks public samples (whole list). Not stated in the export.
Before you send a sample, call the lab to confirm it is currently certified for the exact test and method, that it accepts samples from homeowners, and how to collect and ship them. Status can change between list updates.
Why test for nitrate in Virginia
Nitrate has no taste or smell, and a lab report can state the same water in two units that differ by a factor of 4.43. Read our nitrate explainer.
EPA advises private-well owners to test every year for total coliform bacteria, nitrates, total dissolved solids and pH. [1]
About 1,558,115 people in Virginia used private wells in 2015, by the USGS estimate of people on domestic self-supplied water. [2] Federal limits are written for public water systems, not private wells, so testing is up to the owner.
For tests that depend on your home (farms nearby, old plumbing, a new baby), use the which-tests checklist. When results arrive, check your numbers against EPA's limits. State guidance, county data and every lab: Virginia.
Other tests in Virginia
Bacteria testing99 labsArsenic testing39 labsLead testing49 labsPFAS testing20 labsUranium testing18 labsManganese testing38 labsVOC testing28 labs
SourcesCertification fields come only from the state list. Checked 1 Nov 2026. General information, not medical advice.
Certified as ofCurrent as of 8/1/2026
Virginia DCLS - Drinking Water Certified Labs (analyte detail).
Official source