US · FMCSA ACTIVE HAZMAT
THOS SOMERVILLE CO
Upper Marlboro, MD 20774 · DOT 6789
Company profile
Web-discovered · as of 2026-07-30
Thos. Somerville Co. is a Maryland-based distributor of plumbing, heating, and air conditioning supplies with multiple branches across the Mid-Atlantic. They operate a private fleet to deliver wholesale products to contractors and retailers.
Fleet use
Private fleet
Operating scope
Regional
Service model
own account
Equipment
box truck, specialized
Ownership
Private
Employees
201-500
HQ · 16155 Trade Zone Ave, Upper Marlboro, MD 20774
Active website, 2026 industry recognition, and multiple MD locations.
Registry record
Source FMCSA · as of 2026-07-08
Fleet size
77
power units · corroborated
Activity
road freight carrier
private licence
In operation since
1974
77 drivers
US compliance
Source FMCSA L&I / SAFER · as of 2026-07-12
Operating authority
None / private
Insurance on file
No
Out of service
No
Safety rating
SATISFACTORY
Crashes (24 mo)
1
0 fatal · 2 injured
Data Services
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