FEDERAL CONTRACTOR · DOT & NON-DOT EMPLOYER TESTING
Washington DC Mobile Drug & Alcohol Testing
WMATA FTA · Reagan National DCA & Dulles IAD FAA · Amtrak FRA · Federal Contractors · I-95/I-66 FMCSA — DC cannabis law does NOT protect DOT workers.
Washington DC and its immediate jurisdiction host the highest concentration of federal contractors in the world — virtually every major defense, technology, consulting, and government services firm maintains a DC presence, and most are subject to FAR 52.223-6 drug-free workplace requirements. WMATA (Washington Metropolitan Area Transit Authority) operates one of the nation's largest heavy rail, bus, and commuter systems under FTA 49 CFR Part 655. Reagan National Airport (DCA) is the nation's most politically scrutinized and operationally dense short-haul airport, with American Airlines as the dominant carrier. Dulles International Airport (IAD) is United Airlines' second-largest hub and a major international gateway. Amtrak's Northeast Corridor passes through Union Station, making DC a critical FRA junction. DC Initiative 71 (2014) and subsequent cannabis measures have legalized recreational use in the District — but 49 CFR Part 40 governs every WMATA operator, DCA/IAD aviation employee, Amtrak crew member, and CDL driver in DC regardless of local law. OnSite Employer Testing dispatches throughout the District and the immediate DC metro.
OnSite Employer Testing coordinates mobile drug testing collections at your Washington-area facility, yard, terminal, or job site. We do not operate a clinic. Review how it works or browse all locations we serve across the region.
The Nation's Capital — The World's Largest Federal Contractor Market
DOT & Federal Testing Services — Washington DC
We coordinate the following collections for Washington-area employers:
- FTA 49 CFR Part 655 — WMATA Metrorail, Metrobus, and MetroAccess safety-sensitive employees — operators, maintenance, track, and signal workers across all DC Metro lines
- FAA 14 CFR Part 120 — Pilots, flight attendants, dispatchers, A&P mechanics, ground security coordinators, and ramp/ground handling crew at Ronald Reagan Washington National Airport (DCA) — American, Southwest, Delta, United; and Washington Dulles International Airport (IAD) — United hub, international carriers, and cargo operators
- FRA 49 CFR Part 219 — Amtrak Northeast Corridor engineers, conductors, and crew based at or operating through Washington Union Station; MARC commuter rail safety-sensitive employees
- FMCSA 49 CFR Part 382 — CDL drivers on I-95, I-66, I-395, and the DC beltway serving DC metro freight and last-mile delivery
- Federal contractor testing — White House complex, Capitol Hill, DOD, DHS, DOJ, DOS, and the full DC federal agency contractor ecosystem under FAR 52.223-6 and agency-specific drug testing requirements
- Pre-employment, Random, Reasonable Suspicion, Post-Accident — urine, oral fluid, and EBT
- DOT Return-to-Duty & Follow-Up — SAP-supervised employees across all modes
- DC Cannabis Initiative 71 Compliance — DC's recreational cannabis law does NOT affect 49 CFR Part 40; marijuana positives remain disqualifying for all DOT safety-sensitive employees and federal contractors
- Construction sector — DC infrastructure, Metro capital program, and federal facility construction workforces
- Hair follicle and instant-result screening for high-volume federal contractor onboarding
Industries Served in Washington DC
- Federal government contracting — DOD, DHS, DOJ, DOS, intelligence community support contractors
- Transit — WMATA Metrorail, Metrobus, MetroAccess; MARC commuter rail
- Aviation — Reagan National (DCA), Dulles International (IAD)
- Railroad — Amtrak Northeast Corridor, MARC commuter rail
- CDL freight — I-95, I-66, I-395, DC beltway
- Construction — DC federal facility, Metro capital program, infrastructure
- Healthcare — GW Hospital, MedStar Georgetown, Howard University Hospital
- Technology and consulting — DC defense and civilian IT contractor sector
Applicable Regulations — Washington DC
FTA 49 CFR Part 655 governs WMATA's enormous safety-sensitive workforce — one of the largest FTA-regulated transit agencies in the nation. FAA 14 CFR Part 120 applies to safety-sensitive aviation employees at both DCA and IAD. FRA 49 CFR Part 219 covers Amtrak NEC and MARC crews. FMCSA 49 CFR Part 382 governs DC metro CDL fleets. Federal contractors across all DC agencies are subject to FAR 52.223-6. DC Initiative 71 and subsequent cannabis measures do not affect 49 CFR Part 40 — marijuana positives remain disqualifying for all DOT-regulated and federal contractor employees in the District. Program design and compliance obligations remain your responsibility under applicable law — we coordinate the collections.
On-Site Collections in Washington
WMATA, DCA/IAD airports, Amtrak NEC, federal agency contractors, and I-95/I-66 carriers — one call dispatches certified collections across the nation's capital.
Use our instant quote calculator to scope your collection or visit our service areas page for broader coverage context.
Questions from employers in this region
DC legalized recreational marijuana — does that affect WMATA operators or Amtrak crews?
No. DC's recreational cannabis measures do not affect federal DOT testing under 49 CFR Part 40. Marijuana positives remain disqualifying violations for WMATA Metro operators (FTA), Amtrak engineers (FRA), DCA/IAD aviation workers (FAA), and CDL drivers (FMCSA) in the District.
Do you serve federal agency contractors across DC — DOD, DHS, DOJ, and others?
Yes. We coordinate collections for federal contractor employees at DC agency locations throughout the District — all using SAMHSA-approved chain-of-custody procedures with certified laboratory analysis and MRO review.
Can you serve both Reagan National (DCA) and Dulles (IAD)?
Yes. Our DC metro service area covers both DCA (in Arlington, VA) and IAD (in Loudoun/Fairfax County, VA) as part of the greater DC aviation market — one call covers all three DC-area airports including BWI in Maryland.
Do you serve WMATA Metro employees under FTA 49 CFR Part 655?
Yes. FTA-compliant collections for WMATA Metrorail, Metrobus, and MetroAccess safety-sensitive employees are available throughout the DC metro area.
Core programs: Mobile & on-site drug testing, DOT drug testing, Non-DOT drug testing, Post-accident testing, Reasonable suspicion testing, Random testing programs, Breath alcohol testing. Planning: how it works, instant quote calculator, all locations. Industries: employer industries we support. Long-form answers: Employer drug testing FAQ. Quick questions: Contact us.
For how we think about regions and feasibility, see service areas.
Nationally coordinated collection support
OnSite Employer Testing is headquartered in Illinois and coordinates mobile and on-site employer testing across selected regions and employer locations—including through partner collectors when your program, timing, and geography allow. Availability depends on location, timing, test type, site access, collector availability, and scheduling needs.
Mobile Testing for DC's Federal, Transit, and Aviation Workforce
WMATA, DCA/IAD airports, Amtrak NEC, federal agency contractors, and I-95/I-66 carriers — one call dispatches certified collections across the nation's capital.