Mdk, LLC
Sparks, NV Doing business as Western Environmental Testing Laboratory
- UEI
- HXG6U97RND27
- CAGE
- 3SVC5
- Primary NAICS
- 541380 Testing Laboratories and Services
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- SAM.gov registration date
- Physical address
- 475 E Greg St #119, Sparks, NV 89431, USA
- Website
- wetlaboratory.com
- Employees
- 1-10
- Estimated annual revenue
- $1M-$10M
- Industry
-
- Industrials
- Commercial & Professional Services
- Professional Services
- SIC code
- 87 Engineering & Management Services
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $139,586 |
| FY2025 | $201,372 |
| FY2024 | $169,607 |
| FY2023 | $184,162 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Interior | $139,586 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
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About the company
Mdk, LLC, doing business as Western Environmental Testing Laboratory, is a woman-owned small business based in Sparks, Nevada, that provides inorganic and organic water, soil, and sediment laboratory testing services to federal agencies as a prime contractor exclusively under Total Small Business set-asides. The company operates wet laboratory facilities in Sacramento, California, and Sparks, Nevada, delivering EPA-standard analytical methods for metals, nutrients, anions, and related environmental parameters to support water resource management and environmental compliance programs.
Customer concentration is extreme and decision-relevant. The Department of the Interior Bureau of Reclamation accounts for 257 of 381 total awards (71% of the award count) with $2.5 million in combined potential value (99% of the portfolio). Secondary customers — the National Park Service Pacific West Region ($231 thousand across 3 awards), the United States Marine Corps ($149 thousand across 6 awards), the Bureau of Land Management Nevada Region ($37 thousand across 2 awards), and the Fish and Wildlife Service ($15 thousand across 1 award) — are negligible by volume and dollars. Mdk has no subcontractor exposure; 100% of its awards are prime.
Mdk's primary vehicle is Blanket Purchase Agreement INR11PA20028 with the Bureau of Reclamation, which anchors 206 task orders and $226 thousand in combined potential value. A newer BPA (140R2021A0023) carries 11 task orders and $599 thousand in potential value and runs through March 2026. In September 2026, the Bureau of Reclamation established a new $400,000 ceiling BPA (designated Total Small Business set-aside, performance through August 2031) for laboratory analysis of soil, sediment, and water samples testing organic and inorganic parameters, with authorized ordering across Interior Region 10. Representative recent work includes an October 2026 $86,174 BPA call for inorganic water parameter analysis at the Sparks facility (completion August 2027), a March 2026 $60,168 BPA call for wet laboratory analysis in Sacramento (completion September 2026), and a $208,067 purchase order from the National Park Service for laboratory water testing at Death Valley National Park (awarded September 2022, ultimate completion September 2027 following option-year exercise).
Activity has been flat to declining — four awards in 2026, four in 2024, three in each of 2023 and 2022, and one in 2025. Three awards (combined potential value $309 thousand) reach completion within the next twenty-four months and face recompete risk. NAICS coding reflects the business: 378 of 381 awards fall under Testing Laboratories and Services (NAICS 541380), with 181 awards under Environmental Systems Protection–Water Quality Support PSC coding. Combined potential value across the portfolio stands at $3 million, with $1.5 million obligated to date (52% burn-down), reflecting Mdk's posture as a low-volume, heavily concentrated, set-aside-dependent vendor serving a single customer agency with routine, small-dollar analytical task orders.
SBA capabilities narrative
Western Environmental Testing Laboratory (WETLAB) located in Sparks, Nevada is
an inorganic environmental testing laboratory. WETLAB specializes in inorganic analyses including metals and wet chemistry.
Quick answers
Is Mdk, LLC registered in SAM.gov?
Yes. Mdk, LLC's SAM.gov registration is active through January 8, 2027.
How much has Mdk, LLC received in federal contracts?
Federal contracts obligated $201,372 to Mdk, LLC in fiscal year 2025 and $694,727 in fiscal years 2023 through 2027.
How does Mdk, LLC rank among federal contractors?
Mdk, LLC ranked #18 in PSC B533 in FY2025.
What is Mdk, LLC's most recent federal award?
Mdk, LLC's most recent federal contract award is The purpose of this requirement is to place a BPA call for laboratory services to analyze inorganic parameters in water… (140R2026F0062), from Bureau of Reclamation, on October 1, 2026.
On GovTribe
See Mdk, LLC's full federal record
- Federal contract awards
- IDV awards
- Funding analysis by agency, NAICS and set-aside
- Similar vendors