Plumbing contractors · California

Muir-Chase Plumbing Co., Inc.

Los Angeles, CA · ~174 workers · 8 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
0.8
Avg TCR
2.8
Industry avg
0
Fatalities
Subscribe to safety-record updates (RSS)

The verdict

Muir-Chase Plumbing Co., Inc. runs at 30% of its industry's injury rate - far safer than the typical Plumbing contractors workplace, earning a grade A.

Muir-Chase Plumbing Co., Inc.: 0.8 TCR = 30% of Plumbing contractors BLS 2.8 · 8y Form 300A (see methodology below)

Muir-Chase Plumbing Co., Inc. safety composite

Muir-Chase Plumbing Co., Inc. scores strongest on total case rate (tcr) (safer than 90% of same-industry peers) and weakest on fatalities (safer than 51%), 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).

C

69/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 0.84 per 100 workers

Safer than 90% of industry peers

DART rate
C 0.59 per 100 workers

Safer than 57% of industry peers

Fatalities
D 0

Safer than 51% 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

Muir-Chase Plumbing Co., Inc.: 0.0 → 0.6 TCR

Peak year 2023 @ 2.0 TCR · DART/TCR 0.7× in 2024

Muir-Chase Plumbing Co., Inc.'s TCR rose 0.6 from 0.0 in 2017 to 0.6 in 2024. Peak filing year was 2023 at 2.0 TCR. In 2024, DART was 0.7× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Los Angeles, CA AT/BELOW-IND · MID

Grade A · TCR 0.8 · 30% of ind

  • DART 0.6 DART
  • RANK #42/594
  • PHOTO ICS Industrial Comme…
  • BOOK 8y book
  • INJ 11 inj
  • SIZE ~174 FTE

Nearest TCR peer: ICS Industrial Commercial Systems office (0.0 TCR gap)

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

Muir-Chase Plumbing Co., Inc. in the TCR neighbourhood

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

TCR

What this shows Muir-Chase Plumbing Co., Inc. averages 0.8 TCR (30% of the Plumbing contractors BLS benchmark).

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

Muir-Chase Plumbing Co., Inc. TCR series: 2017=0 · 2018=0.6 · 2019=1.2 · 2020=1.7 · 2021=0 · 2022=0.6 · 2023=2 · 2024=0.6 · BLS 2.8

Where Muir-Chase Plumbing Co., Inc. falls in its industry

5,793 Plumbing contractors establishments

Safer than 90% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #42 safest of 594 Plumbing contractors employers in California.

Muir-Chase Plumbing Co., Inc. (174 employees, TCR 0.8) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3 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 050100150200250 05101520 Average employees Total Case Rate Muir-Chase Plumbing Co., Inc.
Muir-Chase Plumbing Co., Inc. (174 employees, TCR 0.8) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Muir-Chase Plumbing Co., Inc. has more employees than the Plumbing contractors median and a lower injury rate than the industry's median TCR of 3.3. 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 0.6 0.6 1 0 0
2023 2.0 0.7 3 0 0
2022 0.6 0.6 1 0 0
2021 0.0 0.0 0 0 0
2020 1.7 0.0 3 0 0
2019 1.2 0.6 2 0 0
2018 0.6 0.0 1 0 0
2017 0.0 0.0 0 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Los Angeles

5,793 Plumbing contractors employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 2,064 employers in Los Angeles, CA · 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 ICS Industrial Commercial Systems office 0.8 TCR
NAICS-TCR Hiller Concord 0.8 TCR
NAICS-TCR Streimer New Mexico 0.8 TCR
NAICS-TCR vulcan enterprises, inc. 0.8 TCR
STATE-SIZE Gill Ranch 174 FTE
STATE-SIZE JTS Modular Inc. 174 FTE
STATE-SIZE MCE Corporation 174 FTE
STATE-SIZE American Asphalt 174 FTE
CITY-NEAR Live Nation Worldwide, Inc. 50,317 FTE
CITY-NEAR UC Los Angeles 40,333 FTE
CITY-NEAR LADWP 11,717 FTE
CITY-NEAR Los Angeles Department of Water and Power 10,346 FTE
NAT-TCR Missoula Mt. 0.8 TCR
NAT-TCR Keystone Structural Concrete LLC 0.8 TCR
NAT-TCR Sugarland 0.8 TCR
NAT-TCR Gracie's Kitchens Inc. 0.8 TCR
NAT-SIZE Peterson Park Health Care Center 174 FTE
NAT-SIZE Cleer Vision Windows, LLC 174 FTE
NAT-SIZE Metier Construction, Inc. 174 FTE
NAT-SIZE Estes Services 174 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, 2020, 2019, 2018, 2017. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.