FAA · FMCSA · FRA · ON-SITE EMPLOYER TESTING
Mobile Drug & Alcohol Testing — Joliet, IL and the Will County Inland Port
The largest inland port in North America. 500+ transportation companies. I-55 / I-80 freight crossroads. Collections at your yard, warehouse, or job site — not a clinic across town.
Will County — anchored by Joliet — is the logistics capital of the United States. The BNSF Logistics Park Chicago and Union Pacific Joliet Intermodal Terminal together form a 6,400-acre inland port complex that handles over 3 million TEUs annually and ranks as the nation's largest inland port by volume. Amazon, GEODIS, CJ Logistics, Harbor Freight, and hundreds of other companies operate massive distribution and warehousing operations along the I-55 / I-80 corridor. Transportation and warehousing is Will County's single largest employment sector.
OnSite Employer Testing coordinates mobile and on-site drug and alcohol testing for Joliet-area employers — FMCSA carriers, warehouse operators, construction contractors, and manufacturers. We come to your facility. No clinic trips. No lost shift time. See how it works and all locations.
Why Joliet Has the Highest DOT Testing Demand in Will County
The intersection of I-55 and I-80 in Will County is one of the most freight-intensive geographic points in the United States. Five Class I railroads service the county — BNSF, Union Pacific, CSX, Canadian National, and Norfolk Southern. The CenterPoint Intermodal Center alone covers 6,400 acres and supports over 8,000 direct jobs at the complex, with tens of thousands more in surrounding distribution and logistics operations.
Every CDL driver servicing this corridor must be enrolled in a DOT-compliant random drug and alcohol testing program. Every new CDL hire requires a pre-employment drug test before first dispatch. Post-accident testing windows are 32 hours for drugs and 8 hours for alcohol — a narrow window where having a mobile provider already contracted to your operation is the difference between compliance and a recordable violation.
Industries We Serve in Joliet and Will County
FMCSA Trucking and Fleet Operations
Will County's road network supports one of the densest concentrations of DOT-regulated carriers in the Midwest. Drayage companies, intermodal transportation providers, transload operators, and long-haul carriers all require full 49 CFR Part 40 programs — pre-employment, random pool enrollment, post-accident, reasonable suspicion, and return-to-duty.
We coordinate mobile collections at your fleet yard, terminal, or dock — not a clinic that requires your drivers to leave a dispatch window.
Warehousing and Distribution (Non-DOT and DOT)
Amazon, GEODIS, CJ Logistics, Harbor Freight, and Estes Forwarding operate large distribution centers along the I-55 industrial corridor. Forklift operators, dock workers, and fleet drivers require either Non-DOT company-policy testing or DOT testing depending on vehicle class and role.
We coordinate Non-DOT and DOT collections in a single visit for warehousing and distribution employers running blended programs — reducing dispatch trips and scheduling overhead.
Construction
Will County's infrastructure growth drives consistent demand for pre-employment and random testing at construction sites, equipment yards, and project staging areas along the county's expanding road and logistics network.
We coordinate mobile collections at job sites, trailers, and contractor offices — without requiring crews to leave an active site for a clinic appointment.
Manufacturing
Food, consumer goods, and industrial manufacturers along the I-55 corridor employ safety-sensitive production and fleet workers who benefit from Non-DOT random programs. Many insurance carriers require documented drug-free workplace programs for workers' comp premium discounts.
Testing Services Available in Joliet and Will County
All DOT urine tests include MRO review. Collections follow 49 CFR Part 40 chain-of-custody procedures.
DOT drug testing collections (FMCSA, FRA, FAA, FTA, PHMSA, USCG)
- Pre-employment drug and alcohol testing
- Reasonable suspicion and return-to-duty testing
Breath alcohol testing (BAT certified)
- Oral fluid drug testing
Mobile and on-site collections at your facility, yard, or job site
Communities We Serve
We coordinate mobile employer drug and alcohol testing across Joliet, Bolingbrook, Romeoville, Lockport, Crest Hill, Plainfield, Elwood, Shorewood, and the broader Will County employer market.
Coverage depends on facility address, test type, program requirements, and collector availability. Submit a quote request or use our instant quote calculator to confirm support for your program.
Questions from employers in this region
We operate a drayage company at the CenterPoint Intermodal Center. Can you come to our yard?
Yes. Drayage carriers are FMCSA-regulated and all CDL drivers require full DOT drug and alcohol program compliance. We come to your yard or terminal — no need to send drivers to a clinic. We handle pre-employment, random, and post-accident testing on-site.
Our warehouse has 80 Non-DOT employees. Can you run a random program for them?
Yes. Non-DOT programs are governed by your company's written policy rather than federal regulations. We design and administer the program — policy setup, random draws, and result management — using the same SAMHSA-certified lab and chain-of-custody process as DOT testing.
Can you support multiple Joliet-area sites in one visit?
Yes. Multi-site coverage is one of the strongest use cases in this market. We route collections across multiple Will County locations in a single trip — reducing per-test travel cost and scheduling complexity.
How does DOT post-accident testing work for a Joliet carrier?
Under 49 CFR Part 382, a post-accident drug and alcohol test is required when a CDL driver is involved in an accident involving a fatality, a bodily injury requiring medical treatment away from the scene with a citation, or a vehicle disabled and towed with a citation. Drug testing must occur within 32 hours and alcohol testing within 8 hours. Call (219) 315-0345 immediately after the incident.
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.
Scope collections for your Joliet-area operation
Share site addresses, expected donor count, test reason, and DOT or non-DOT status — we confirm what is workable and send a written proposal.