Carrier profile · USDOT 333894 · Updated Jun 13, 2026

Plumb Supply Company

65 power unitsavg 3.5 yrRegional · 4 statesDES MOINES, IA94/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORY
Verified linksplumbsupply.comFMCSA SAFER

Safety

Roadside out-of-service rates versus the national benchmark, inspection and crash trends, decoded violation themes, and ELD / hours-of-service integrity — the full safety picture behind the verdict.

Out-of-service rate· 24-mo cumulative · vs national

Vehicle OOS 8.3%24-mo cumulative
050%nat'l 22.26%
Driver OOS 0.0%24-mo cumulative
030%nat'l 6.67%

Every inspection in the window pooled — 12 vehicle and 20 driver inspections over 24 months.

Vehicle OOS rate· vehicle OOS · vehicle-level inspections · 6-month trailing

16.7% · latest 6-mo window▲ Rising

Share of vehicle-level roadside inspections in each trailing six-month window that resulted in a vehicle out-of-service order. Trending up 11.3 pts across the window. The national vehicle benchmark uses the same metric and is shown on the chart.

Roadside inspection history· 24 charted calendar months · vehicle / driver level · any-OOS overlay

20 inspections in the charted months · busiest month Mar '26 · 4

Vehicle-levelDriver-levelAny OOS

Monthly FMCSA roadside inspections across the 24 charted calendar months. Bars show level-qualified vehicle and driver populations; one inspection can qualify for both. The line shows inspections with any out-of-service result.

Inspection coverage· expected vs observed · the fraud signal

Inspection coverage

How heavily FMCSA inspects this fleet for its size — it tells you how much to trust the safety signals above. Thin coverage on a young authority is a fraud signal nobody else surfaces.

Thin coverage
Under-inspected
Expected
Well-monitored
Heavily inspected
≈0.2 / unit·yr
thin signalabundant signal
Few roadside inspections for a 65-unit fleet — the out-of-service and violation signals above rest on a small sample, so weight them cautiously. Thin coverage on a young authority is itself a flag.
Registered power units
65
Inspections · 24 mo
20
Annualized
≈10 / yr
Coverage
≈0.2 inspections / unit · yr

BASIC categories· CSA SMS · Aug 2026

6%
Unsafe Driving
Vektor peer est.
Hours-of-Service
0violations
clean · per-BASIC
Driver Fitness
0violations
clean · per-BASIC
Controlled Substances
0violations
clean · per-BASIC
18%
Vehicle Maintenance
Vektor peer est.

Percentile = standing among same-exposure peers (higher = worse). FMCSA publishes percentiles for only some carriers (shown official); elsewhere we show a Vektor peer-percentile estimate, or the absolute SMS measure when there are too few inspections to rank.

Violation themes· decoded · grouped by BASIC

What this carrier actually gets cited for — FMCSA violation codes decoded into plain English, ranked by frequency.

  • 392.2 State/local traffic law violation (speeding, etc.)Unsafe Driving8 · 0 OOS
  • 393.95 Emergency equipment (extinguisher, triangles)Vehicle Maintenance5 · 0 OOS
  • 393.9 Inoperative required lampsVehicle Maintenance3 · 0 OOS
  • 396.17 Periodic (annual) inspectionVehicle Maintenance2 · 0 OOS
  • 393.47 Brake actuators / linings / componentsVehicle Maintenance1 · 0 OOS
  • 393.45 Brake tubing / hose defectsVehicle Maintenance1 · 1 OOS
  • 392.7 Driving of commercial motor vehiclesUnsafe Driving1 · 0 OOS
  • 393.203 Parts & accessories (vehicle condition)Vehicle Maintenance1 · 0 OOS
  • 391.41 No / expired medical certificateDriver Fitness1 · 0 OOS

ELD & hours-of-service

No hours-of-service or ELD violations on record across 27 inspections — a clean logging history.

Crash history· 20 total · 2 in 24 mo

20
Total crashes
2
In last 24 mo
0
Fatal
6
Injury
YearCrashesFatalInjuryTow
20262011
20241001
20231001
20222002
20211001
20201001
20181001
20171011
20161001
20151001
20101001
20091001
20062011
20052012
20041010
20031011
DateStateFatalitiesInjuriesTow-away
May 28, 2026IA00Yes
Feb 20, 2026IA01No
Jun 4, 2024IA00Yes
Oct 13, 2023IA00Yes
Oct 25, 2022MO00Yes
Jan 4, 2022IA00Yes
Feb 12, 2021IA00Yes
Mar 20, 2020MO00Yes
Jun 12, 2018MO00Yes
Nov 1, 2017MO03Yes
May 4, 2016IA00Yes
Dec 28, 2015MO00Yes
Apr 27, 2010IA00Yes
Jan 5, 2009IA00Yes
Nov 10, 2006IA01No
Jun 14, 2006IA00Yes
Nov 22, 2005IA01Yes
Oct 14, 2005IA00Yes
Jun 7, 2004IA02No
Apr 14, 2003MN01Yes