Texas labs
One laboratory is independently verified to offer residential / private water-supply testing: Lower Colorado River Authority (LCRA) Environmental Laboratory Services. The other rows are Texas commercial, health-department, and university laboratories transcribed from TCEQ’s Public Water System Lab Map Table dated 03/26/2026. We have not verified that those other labs currently accept private-well samples. Call before you collect water.
What we could and could not verify
- TCEQ’s PWS Lab Map Table lists NELAP-accredited drinking-water public laboratories that offer microbial total coliforms, lead and copper (LCR), and/or water quality parameters (WQP). It is built for public water systems. Appearance on it is not an endorsement and is not, by itself, a statement that the lab takes homeowner samples.
- 31 municipal water-plant, city utility, river-authority, water-district, and water-supply-corporation rows were omitted from this directory (80 total table rows). That is a directory choice for private well owners, not a statement about their certification. They remain on the official TCEQ file. LCRA is kept because it publishes a residential testing program.
- Microbial / LCR / WQP columns follow the TCEQ table (Y/N). Nitrate and other chemistry are not on this table — ask the lab. Weekend microbial acceptability columns change; always call. Prices are intentionally omitted.
- TCEQ and TWDB both say to always call to confirm address, drop-off hours, and prices before you ship a sample.
Verified for private well owners
Lower Colorado River Authority (LCRA) Environmental Laboratory Services
3505 Montopolis Drive, Austin, TX 78744 · 512-730-6022 · toll-free 877-362-5272 · Environmental.Lab@lcra.org
On TCEQ’s PWS Lab Map Table (updated 03/26/2026): Microbial Y, LCR Y, WQP Y. LCRA’s residential water supply testing page (retrieved 2 September 2026) states it offers testing of residential water supplies / private drinking or domestic water sources for common EPA contaminants; bottle kits can be ordered online and shipped or picked up; samples can be shipped on ice or dropped off; hours listed as 8 a.m. to 5 p.m. Monday through Friday. Prices are not copied here.
Source: lcra.org/services/els/residential-water-testing · TCEQ PWS Lab Map Table.
Local health department laboratories on the PWS Lab Map Table
Except for LCRA above, we have not verified that these laboratories currently accept a sample you collect yourself. Call first. Mail vs. drop-off is unknown on the TCEQ table.
| Laboratory | City | County | Address | Phone | Coliform (Micro) | Lead & copper (LCR) | WQP | Accepts private wells? | Mail / drop-off |
|---|---|---|---|---|---|---|---|---|---|
| Abilene–Taylor County Public Health District | Abilene | Taylor | 850 North 6th Street | (325) 692-5600 | Yes | — | — | unknown — call first | unknown |
| Brazoria County Health Department Water Laboratory | Angleton | Brazoria | 434 East Mulberry Street | (979) 864-1628 | Yes | — | — | unknown — call first | unknown |
| City of El Paso Department of Public Health | El Paso | El Paso | 9566 Railroad Dr. | (915) 212-2765 | Yes | — | — | unknown — call first | unknown |
| City of Houston Health Department, Bureau of Laboratory Services | Houston | Harris | 2250 Holcomb Boulevard | (832) 393-3939 | Yes | — | — | unknown — call first | unknown |
| City of Laredo Health Department Lab | Laredo | Webb | 2600 Cedar Avenue | (956) 795-4908 | Yes | — | — | unknown — call first | unknown |
| Corpus Christi -Nueces County Public Health District Laboratory | Corpus Christi | Nueces | 1702 Horne Road | (361) 826-7213 | Yes | — | — | unknown — call first | unknown |
| Northeast Texas Public Health District Laboratory | Tyler | Smith | 815 North Broadway Avenue | (903) 535-0090 | Yes | — | — | unknown — call first | unknown |
| San Antonio Metropolitan Health District | San Antonio | Bexar | 2303 SE Military Drive | (210) 207-8887 | Yes | — | — | unknown — call first | unknown |
| Sweetwater -Nolan County Health Department | Sweetwater | Nolan | 301 East 12th Street | (325) 235-5463 | Yes | — | — | unknown — call first | unknown |
| Tarrant County Public Health Laboratory | Fort Worth | Tarrant | 1101 South Main Street, Suite 1700 | (817) 321-4758 | Yes | — | — | unknown — call first | unknown |
| Texas Department of State Health Services Laboratory Services Section | Austin | Travis | 1100 West 49th Street | (512) 458-7318 | Yes | Yes | Yes | unknown — call first | unknown |
| Texas Department of State Health Services South Texas Laboratory | Harlingen | Cameron | 1301 South Rangerville Road | (956) 364-8746 | Yes | — | — | unknown — call first | unknown |
| Victoria County Public Health Department Water Laboratory | Victoria | Victoria | 2805 North Navarro Street | (361) 578-6281 | Yes | — | — | unknown — call first | unknown |
| Wichita Falls Wichita County Public Health District Laboratory | Wichita Falls | Wichita | 1700 Third Street | (940) 761-7873 | Yes | — | — | unknown — call first | unknown |
University / research laboratories on the PWS Lab Map Table
Call to confirm they accept a private-well sample and which analytes they can run.
| Laboratory | City | County | Address | Phone | Coliform (Micro) | Lead & copper (LCR) | WQP | Accepts private wells? | Mail / drop-off |
|---|---|---|---|---|---|---|---|---|---|
| Edwards Aquifer Research & Data Center, Texas State University | San Marcos | Hays | 220 East Sessoms Drive | (512) 245-2329 | Yes | — | Yes | unknown — call first | unknown |
| Texas Institute for Applied Environmental Research (TIAER) | Stephenville | Erath | 201 North Saint Felix Street | (254) 968-9570 | Yes | — | — | unknown — call first | unknown |
Commercial laboratories in Texas on the PWS Lab Map Table
Call to confirm they still hold accreditation, that they accept a private-well sample, and which analytes they can run. Mail vs. drop-off is unknown unless noted. 1 of 49 tabulated rows is verified for private / residential wells (LCRA, above).
| Laboratory | City | County | Address | Phone | Coliform (Micro) | Lead & copper (LCR) | WQP | Accepts private wells? | Mail / drop-off |
|---|---|---|---|---|---|---|---|---|---|
| A & B Environmental Services, Inc. | Houston | Harris | 10100 East Freeway, Suite 100 | (713) 453-6060 | Yes | Yes | Yes | unknown — call first | unknown |
| Alamo Analytical Laboratories, Ltd. | San Antonio | Bexar | 10526 Gulfdale Street | (210) 340-8121 | — | Yes | Yes | unknown — call first | unknown |
| ALS Laboratory Group, Environmental Services Division – Houston, Texas | Houston | Harris | 10450 Stancliff Road, Suite 210 | (281) 530-5656 | — | Yes | — | unknown — call first | unknown |
| Analytical Environmental Labs | Tyler | Smith | 8310 South Broadway Avenue | (903) 509-8700 | Yes | — | — | unknown — call first | unknown |
| Aqua-Tech Laboratories, Inc. | Austin | Travis | 3512 Montopolis Drive | (512) 301-9559 | Yes | Yes | Yes | unknown — call first | unknown |
| Aqua-Tech Laboratories, Inc. | Bryan | Brazos | 635 Phil Gramm Boulevard | (979) 778-3707 | Yes | Yes | Yes | unknown — call first | unknown |
| Bio-Chem Lab, Inc. | West | McLennan | 4751 Tokio Road | (254) 829-8001 | Yes | Yes | Yes | unknown — call first | unknown |
| Chaparral Laboratories, Inc. | Huntsville | Walker | 861 State Highway 19 South | (936) 291-1881 | Yes | Yes | Yes | unknown — call first | unknown |
| Eastex Environmental Lab, Inc. -Coldspring | Coldspring | San Jacinto | 35 Eastex Lane | (936) 653-3249 | Yes | Yes | Yes | unknown — call first | unknown |
| Eastex Environmental Lab, Inc.-Nacogdoches | Nacogdoches | Nacogdoches | 1119 South University Drive | (936) 569-8879 | Yes | — | Yes | unknown — call first | unknown |
| Envirodyne Laboratories, Inc. | Houston | Harris | 11011 Brooklet Drive, Suite 230 | (281) 568-7880 | Yes | Yes | Yes | unknown — call first | unknown |
| Environmental Monitoring Lab | Amarillo | Randall | 13260 South Highway 287 | (806) 335-9393 | Yes | — | — | unknown — call first | unknown |
| Environmental Monitoring Lab | Hillsboro | Hill | 6145 South Highway 171 | (254) 582-2622 | Yes | — | — | unknown — call first | unknown |
| Environmental Monitoring Lab | Llano | Llano | 811 East Young Street | (325) 247-3295 | Yes | — | — | unknown — call first | unknown |
| Environmental Monitoring Lab | Winona | Smith | 14295 SH 155 North | (903) 877-9222 | Yes | — | — | unknown — call first | unknown |
| Eurofins EMLab P&K – Houston | Houston | Harris | 10900 Brittmoore Park Drive, Suite G | (281) 940-2580 | Yes | — | — | unknown — call first | unknown |
| Eurofins Xenco, LLC -Dallas | Dallas | Dallas | 9701 Harry Hines Boulevard | (281) 240-4200 | Yes | — | — | unknown — call first | unknown |
| Eurofins Xenco, LLC -El Paso | El Paso | El Paso | 200 East Sunset Road, Suite E | (915) 794-1296 | Yes | — | — | unknown — call first | unknown |
| Eurofins Xenco, LLC -Houston | Stafford | Fort Bend | 4143 Greenbriar | (281) 240-4200 | — | Yes | Yes | unknown — call first | unknown |
| Eurofins Xenco, LLC -Lubbock | Lubbock | Lubbock | 6701 Aberdeen Avenue, Suite 9 | (806) 794-1296 | Yes | — | — | unknown — call first | unknown |
| Integrity Testing, Inc. | Austin | Travis | 8127 Mesa Dr., #C-305 | (512) 891-7777 | — | Yes | Yes | unknown — call first | unknown |
| International Water Quality Lab | El Paso | El Paso | 4100-L Delta Drive | (915) 594-5725 | Yes | Yes | Yes | unknown — call first | unknown |
| Nova Biologicals, Inc. | Conroe | Montgomery | 1775 North Loop 336 East, Suite 4 | (936) 756-5333 | Yes | — | — | unknown — call first | unknown |
| Pace Analytical Services, LLC -Dallas TX | Allen | Collin | 400 West Bethany Suite 190 | (972) 727-1123 | Yes | — | — | unknown — call first | unknown |
| Pace Analytical Services, LLC -Dallas TX | Fort Worth | Tarrant | 2657 Gravel Drive | (817) 616-5030 | Yes | — | — | unknown — call first | unknown |
| Pace Analytical Services, LLC -Dallas TX | Victoria | Victoria | 1606 East Brazos Street, Suite D | (361) 465-7989 | Yes | — | — | unknown — call first | unknown |
| R&C Joy, Inc. | Katy | Harris | 19020 West Little York Road | (281) 858-5988 | Yes | — | — | unknown — call first | unknown |
| San Antonio Testing Laboratory, LLC | San Antonio | Bexar | 1610 South Laredo Street | (210) 229-9920 | Yes | Yes | Yes | unknown — call first | unknown |
| SKG Engineering, LLC | San Angelo | Tom Green | 1122 South Bryant Boulevard, Suite B | (325) 655-1288 | Yes | — | — | unknown — call first | unknown |
| Southern Petroleum Laboratories (SPL), Inc. (FKA Ana-Lab Corporation) | Kilgore | Gregg | 2600 Dudley Road | (903) 984-0551 | Yes | Yes | Yes | unknown — call first | unknown |
| Southern Petroleum Laboratories, Inc. - Plano | Plano | Collin | 1825 East Plano Parkway, Suite 160 | (972) 424-6422 | Yes | Yes | Yes | unknown — call first | unknown |
| Wallgren Environmental Services dba Pollution Control Services | Universal City | Bexar | 1532 Universal City Boulevard, Suite 100 | (210) 340-0343 | Yes | Yes | Yes | unknown — call first | unknown |
Official tools if you need more labs
- TCEQ PWSS page — map plus full PWS Lab Map Table (including utility labs we omitted).
- Steps to Locate an Accredited Environmental Laboratory — NELAP search by matrix and analyte.
- TCEQ Environmental Laboratory (NELAP) Accreditation — public database of accredited labs and fields of accreditation.