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

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.

A
Excellent Safety Record
0.8
avg TCR · per 100 workers
2.8
industry benchmark (BLS)
11
recordable injuries tracked

Grade compares Muir-Chase Plumbing Co., Inc.'s OSHA Total Case Rate of 0.8 to the Plumbing contractors BLS benchmark of 2.8 (30% of benchmark) across 8 years of Form 300A filings (2016–2024). <a href="/methodology">See methodology</a> for reporting-limitation caveats.

Injury rate over time

Muir-Chase Plumbing Co., Inc.'s yearly Total Case Rate, against the 2.8 industry benchmark.

-10123 20172018201920202021202220232024 0.62.8 Industry benchmarkMuir-Chase Plumbing Co., Inc. TCR
Total Case Rate (recordable injuries per 100 full-time workers), OSHA ITA Form 300A. Industry benchmark: BLS IIF, NAICS 238220.

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

6,536 Plumbing contractors establishments

Safer than 80% of graded establishments in this industry, whose median TCR is 2.8.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #107 safest of 659 Plumbing contractors employers in California.

Trend analysis for Muir-Chase Plumbing Co., Inc.

Between 2017 and 2024, Muir-Chase Plumbing Co., Inc.'s Total Case Rate held roughly steady from 0.0 to 0.6 recordable injuries per 100 full-time workers, a 0% change across 7 years of OSHA reporting.

The safest year on record was 2017, at a TCR of 0.0, while 2023 saw the highest rate, at 2.0, a spread of 2.0 points between the best and worst reporting years. That's a wide swing relative to the establishment's overall rate, worth checking the year-by-year table below for whether a single severe year is driving the average, rather than a sustained trend.

Summed across those 8 reporting years, Muir-Chase Plumbing Co., Inc. recorded 11 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 8-year trend above alongside establishment size, since a larger workforce naturally accumulates more raw incidents even at a lower per-100-worker rate.

Verify This Employer with OSHA

The 11 injuries shown on this page for Muir-Chase Plumbing Co., Inc. are sourced from its own 8 years of mandatory OSHA Form 300A summaries. Cross-check the underlying establishment record directly against the federal source, name, NAICS classification, recordable case totals, and inspection history are all searchable on OSHA's Establishment-Specific Injury and Illness Data system.

Verify on OSHA Establishment Search

Source: U.S. Department of Labor, OSHA Establishment-Specific Injury and Illness Data. NAICS 238220 - Plumbing contractors.

DART Rate, Transparent Calculation (2024)

What is the DART rate formula?

DART (Days Away, Restricted, or Transferred) is computed by OSHA as incidents × 200,000 ÷ hours worked. The 200,000-hour denominator equals roughly 100 full-time workers, which lets establishments of very different sizes be compared directly.

1 DART incidents × 200,000 ÷ 340,344 hours worked = 0.59 DART

Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping

Cross-Validating Context, Establishment vs Industry vs State

Benchmark TCR Source
Muir-Chase Plumbing Co., Inc. (this establishment) 0.84 OSHA ITA Form 300A, 8-year avg
Mechanical contractors industry avg 2.80 BLS IIF, NAICS 238220
California state avg (all industries) 5.64 OSHA ITA, state-level rollup

Industry benchmarks: Bureau of Labor Statistics, Injuries, Illnesses, and Fatalities (IIF) program

Reportable Incident Timeline

Year-by-year reportable incidents (recordable injuries + illnesses + fatalities) submitted by Muir-Chase Plumbing Co., Inc. to OSHA's Injury Tracking Application. Each row anchors to OSHA's inspection records search where you can pull the underlying inspection case numbers and citations for that establishment-year.

Source: OSHA Inspection Information System (IMIS) - inspection case-number records

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

What this grade means for you

Use this grade as a relative read on Muir-Chase Plumbing Co., Inc.'s reported OSHA injury record, strong versus its Plumbing contractors peers, but not a guarantee about any single site today.

  • At 30% of the Plumbing contractors benchmark, Muir-Chase Plumbing Co., Inc. reports fewer injuries than typical peers, still worth asking how safety is managed day to day. Know your rights
  • Judge this record against the wider Plumbing contractors sector, where injury rates vary widely, before comparing it in isolation. See the industry
  • Grades reflect 2016–2024 filings; check the latest establishment record straight from OSHA, or look up a different employer. Look up another

Safety grades reflect employers' self-reported OSHA Form 300A filings from 2016 to 2024 and can lag current conditions. A grade is not a guarantee that any specific workplace is safe or unsafe today. See our methodology and disclaimer.

Frequently Asked Questions

What is Muir-Chase Plumbing Co., Inc.'s safety grade?
Muir-Chase Plumbing Co., Inc. has a safety grade of A (Excellent Safety Record). This grade is based on their average Total Case Rate (TCR) of 0.8 compared to the BLS industry benchmark of 2.8 for Plumbing contractors.
How many injuries has Muir-Chase Plumbing Co., Inc. reported?
Muir-Chase Plumbing Co., Inc. has reported 11 total injuries and 0 fatalities across 8 years of OSHA data (2024, 2023, 2022, 2021, 2020, 2019, 2018, 2017). This data comes from mandatory OSHA Injury Tracking Application (ITA) reports.

Similar Employers

Matched by safety record across the industry, by workforce size within California, and by nearby establishments in Los Angeles - a different peer set than the category browse links below.

Similar TCR (~0.8)

Similar size (~174 workers)

Nearby in Los Angeles

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.

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

Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainSafetyScore Editorial

Every figure and grade on PlainSafetyScore is computed directly from OSHA's published Injury Tracking Application data and BLS industry benchmarks, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these safety grades, or report a data error. Data current as of 2016-2024 OSHA ITA release.