Uranium Water Testing Labs in California (32 state-certified labs)
Labs on California's official certification list that test drinking water for uranium, with the ones that take homeowner samples first.
32 named for uranium itself on the list.
Per the state list or a state web page. Call to confirm.
Located outside California but on its list.
USGS estimate for California.
How many labs test for uranium in California
32 labs on California's official drinking-water lab list are certified to test for uranium. All 32 are named for uranium on the list. 27 of them are marked as taking samples from the public. They are listed first. 13 are located outside California.
The list is published by the California State Water Resources Control Board - Environmental Laboratory Accreditation Program (ELAP). These labs come from list files with 26 different dates; each lab page shows its own. Fetched 2026-11-15 (UTC).
California labs certified for uranium
Marked as taking public samples (27)
| Lab | Location | Uranium certification | Public samples | Cert. expiry |
|---|---|---|---|---|
| Alliance Technical Group, LLC - Akron | Cuyahoga Falls, OH | Named on the official list | Public samples: yes (per state) | 6/30/2027 |
| Alpha Analytical Laboratories, Inc. - Ukiah | Ukiah, CA | Named on the official list | Public samples: yes (per state) | 6/30/2027 |
| ASSET Laboratories | Las Vegas, NV | Named on the official list | Public samples: yes (per state) | 1/29/2027 |
| Babcock Laboratories, Inc. | Riverside, CA | Named on the official list | Public samples: yes (per state) | 5/31/2028 |
| BSK Associates | Fresno, CA | Named on the official list | Public samples: yes (per state) | 4/30/2028 |
| Clinical Laboratory of San Bernardino, Inc. | Grand Terrace, CA | Named on the official list | Public samples: yes (per state) | 1/31/2028 |
| Dellavalle Laboratory, Inc. | Fresno, CA | Named on the official list | Public samples: yes (per state) | 8/31/2027 |
| Eberline Analytical Corporation | Oak Ridge, TN | Named on the official list | Public samples: yes (per state) | 9/30/2026 Date on list has passed |
| EMSL Analytical Inc. | Cinnaminson, NJ | Named on the official list | Public samples: yes (per state) | 6/30/2027 |
| Energy Laboratories, Inc. | Billings, MT | Named on the official list | Public samples: yes (per state) | 6/30/2027 |
| Energy Laboratories, Inc. | Casper, WY | Named on the official list | Public samples: yes (per state) | 6/30/2027 |
| Environmental Laboratory Network, Inc. | San Diego, CA | Named on the official list | Public samples: yes (per state) | 3/31/2027 |
| Eurofins Pomona | Pomona, CA | Named on the official list | Public samples: yes (per state) | 6/18/2027 |
| Eurofins South Bend | South Bend, IN | Named on the official list | Public samples: yes (per state) | 6/30/2027 |
| Eurofins St. Louis | Earth City, MO | Named on the official list | Public samples: yes (per state) | 6/30/2027 |
| Fruit Growers Laboratory, Inc. | Santa Paula, CA | Named on the official list | Public samples: yes (per state) | 7/31/2027 |
| GEL Laboratories, LLC | Charleston, SC | Named on the official list | Public samples: yes (per state) | 10/31/2026 Date on list has passed |
| Microbac Laboratories, Inc. - Turlock | Turlock, CA | Named on the official list | Public samples: yes (per state) | 3/31/2028 |
| Monterey Bay Analytical Services, Inc. | Monterey, CA | Named on the official list | Public samples: yes (per state) | 10/31/2027 |
| Moore Twining Associates, Inc. | Fresno, CA | Named on the official list | Public samples: yes (per state) | 9/30/2028 |
| Pace Analytical National Center for Testing & Innovation | Mount Juliet, TN | Named on the official list | Public samples: yes (per state) | 6/30/2027 |
| Pace Analytical Services, LLC dba BC Laboratories, Inc. | Bakersfield, CA | Named on the official list | Public samples: yes (per state) | 5/31/2028 |
| Pace Analytical Services, LLC-Greensburg, PA | Greensburg, PA | Named on the official list | Public samples: yes (per state) | 3/31/2027 |
| Pat-Chem Laboratories | San Fernando, CA | Named on the official list | Public samples: yes (per state) | 5/31/2027 |
| SGS Silver State Analytical Lab - Reno | Reno, NV | Named on the official list | Public samples: yes (per state) | 3/13/2027 |
| Weck Laboratories, Inc. | City of Industry, CA | Named on the official list | Public samples: yes (per state) | 3/31/2028 |
| Western Environmental Testing Laboratory | Sparks, NV | Named on the official list | Public samples: yes (per state) | 6/30/2026 Date on list has passed |
Other labs on the list (5)
| Lab | Location | Uranium certification | Public samples | Cert. expiry |
|---|---|---|---|---|
| California Water Service Company WQ Laboratory | San Jose, CA | Named on the official list | Public samples: ask the lab | 9/30/2028 |
| Coachella Valley Water District | Palm Desert, CA | Named on the official list | Public samples: ask the lab | 7/31/2028 |
| Zone 7 Water Quality Laboratory | Livermore, CA | Named on the official list | Public samples: ask the lab | 12/31/2026 |
| City of Los Angeles Dept. of Water & Power, Water Quality Laboratory | Pasadena, CA | 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) | 9/30/2028 |
| Inland Empire Utilities Agency - Laboratory | Chino, CA | 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) | 10/31/2028 |
How the California list marks public samples (whole list). ELAP's map layer gives each lab a type. Labs of type 'Commercial' take commercial samples; that is broader than 'homeowner', so call before you send a sample. Other lab types (city, water district, wastewater, industrial ...) are not marked either way.
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 uranium in California
Uranium comes from rock, mainly harms the kidneys, and often shows up first as a gross alpha radioactivity number. Read our uranium explainer.
About 1,435,510 people in California used private wells in 2015, by the USGS estimate of people on domestic self-supplied water. [1] 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: California.
Other tests in California
California ELAP - Accredited Laboratories (map layer) + per-lab Fields of Accreditation.
Official source