Sewer main, pipe and connection, construction · Arizona

Trinity Underground LLC

Phoenix, AZ · ~41 workers · 4 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
7.6
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Trinity Underground LLC runs at 271% of its industry's injury rate - far more dangerous than the typical Sewer main, pipe and connection, construction workplace, earning a grade F.

Trinity Underground LLC: 7.6 TCR = 271% of Sewer main, pipe and connection, construction BLS 2.8 · 4y Form 300A (see methodology below)

Trinity Underground LLC safety composite

Trinity Underground LLC scores strongest on fatalities (safer than 52% of same-industry peers) and weakest on dart rate (safer than 2%), blended into one 0-100 breakdown against same-industry peers. A missing measure drops out and redistributes its weight rather than deflating the score. This is a per-dimension breakdown, distinct from the single letter grade above it (which weights TCR alone against the BLS industry benchmark).

F

18/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 7.58 per 100 workers

Safer than 11% of industry peers

DART rate
F 12.29 per 100 workers

Safer than 2% of industry peers

Fatalities
D 0

Safer than 52% of industry peers

Benchmarked live against every credibly-rated employer in the same NAICS industry code in the current OSHA extract (a segment must have at least 8 rated peers to benchmark). Not a legal or compliance determination; PlainSafetyScore's own weighting (TCR 40%, DART 35%, fatalities 25%).

Rising injury rate

Trinity Underground LLC: 3.2 → 14.3 TCR

Peak year 2024 @ 14.3 TCR · DART/TCR 1.62× in 2024

Trinity Underground LLC's TCR rose 11.1 from 3.2 in 2021 to 14.3 in 2024. In 2024, DART was 1.62× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 237110 · Phoenix, AZ ABOVE-IND · SMALL

Grade F · TCR 7.6 · 271% of ind

  • DART 12.3 DART
  • RANK #36/36
  • PHOTO Globe Contractors, I…
  • BOOK 4y book
  • INJ 12 inj
  • SIZE ~41 FTE

Nearest TCR peer: Globe Contractors, Inc. (0.0 TCR gap)

Read with this employer → · Industry book → · Arizona employers → · Look up another →

Trinity Underground LLC in the TCR neighbourhood

Average Total Case Rate among this establishment and nearest same-industry peers

TCR

What this shows Trinity Underground LLC averages 7.6 TCR (271% of the Sewer main, pipe and connection, construction BLS benchmark).

Source U.S. Department of Labor, OSHA Injury Tracking Application (Form 300A) As of 2026-08-25

Trinity Underground LLC TCR series: 2021=3.2 · 2022=2.4 · 2023=10.3 · 2024=14.3 · BLS 2.8

Where Trinity Underground LLC falls in its industry

1,614 Sewer main, pipe and connectio establishments

Safer than 11% of graded establishments in this industry, whose median TCR is 3.0.

More dangerous than peersSafer than peers

Narrower to Arizona alone (the establishments it most directly competes with for workers and contracts): ranked #36 safest of 36 Sewer main, pipe and connectio employers in Arizona.

Trinity Underground LLC (41 employees, TCR 7.6) among 29 same-industry peers, split at the industry median of 54 employees and a TCR of 3.0 2×2 strategic matrix plotting 30 entities by Average employees (X) and Total Case Rate (Y), with a crosshair dividing the plot into four quadrants. Larger & higher-riskSmaller & higher-riskLarger & saferSmaller & safer than peers 0100200300400500 051015 Average employees Total Case Rate Trinity Underground LLC
Trinity Underground LLC (41 employees, TCR 7.6) among 29 same-industry peers, split at the industry median of 54 employees and a TCR of 3.0

Trinity Underground LLC has fewer employees than the Sewer main, pipe and connection, constru median and a higher injury rate than the industry's median TCR of 3.0. Workforce size and injury rate do not always move together within the same industry -- some of its smaller peers run higher rates than its larger ones, and vice versa.

Year-by-Year Safety Data

Year TCR DART Injuries Illnesses Fatalities
2024 14.3 12.3 6 1 0
2023 10.3 10.3 4 0 0
2022 2.4 2.4 1 0 0
2021 3.2 3.2 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

237110 · AZ · Phoenix

1,614 Sewer main, pipe and connection, construction employers nationwide with a credible TCR · 9,594 rated employers in Arizona with headcount on file · 2,630 employers in Phoenix, AZ · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel Establishment Metric
NAICS-TCR Globe Contractors, Inc. 7.6 TCR
NAICS-TCR rotschy 7.6 TCR
NAICS-TCR Leak Eliminators 7.5 TCR
NAICS-TCR 7741_18571 7.5 TCR
STATE-SIZE Soli Organic Inc. - Arizona 41 FTE
STATE-SIZE SAZ-Casa Grande Office/Operations 0032-FAC11 41 FTE
STATE-SIZE Miramonte Homes 41 FTE
STATE-SIZE Mission Critical (Phoenix) 41 FTE
CITY-NEAR Maricopa County 15,504 FTE
CITY-NEAR Phoenix Children's Hospital 7,575 FTE
CITY-NEAR All Company 6,261 FTE
CITY-NEAR 6403-64030500 6,153 FTE
NAT-TCR Skagit Transportation Quincy 7.6 TCR
NAT-TCR Inova Alexandria Hospital 7.6 TCR
NAT-TCR Calumet WRP 7.6 TCR
NAT-TCR Amazon.com Services LLC - DTP9 7.6 TCR
NAT-SIZE 44th Logistics 41 FTE
NAT-SIZE Ceres New Orleans Cruise 41 FTE
NAT-SIZE SA Recycling, Pompano 41 FTE
NAT-SIZE Rio Grande Power Plant 41 FTE

Rel codes: NAICS-TCR · STATE-SIZE · CITY-NEAR · NAT-TCR/NAT-SIZE cross-state. Read with this employer →

Data Source: OSHA Injury Tracking Application (ITA), mandatory establishment-level injury/illness reports. Grades compare employer Total Case Rate (TCR) to BLS IIF industry benchmarks. Data covers years reported by this establishment: 2024, 2023, 2022, 2021. This is publicly available government data - not a legal determination of workplace conditions.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from official public datasets. See our methodology for details.