Plumbing and heating contractors · California

Mike Diamond Plumbing, Inc.

Culver City, CA · ~119 workers · 2 years of OSHA Injury Tracking Application data.

D
Poor Safety Record
5.0
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Mike Diamond Plumbing, Inc. runs at 179% of its industry's injury rate - more dangerous than the typical Plumbing and heating contractors workplace, earning a grade D.

Mike Diamond Plumbing, Inc.: 5.0 TCR = 179% of Plumbing and heating contractors BLS 2.8 · 2y Form 300A (see methodology below)

Mike Diamond Plumbing, Inc. safety composite

Mike Diamond Plumbing, Inc. scores strongest on dart rate (safer than 53% of same-industry peers) and weakest on total case rate (tcr) (safer than 34%), 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).

D

45/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 5 per 100 workers

Safer than 34% of industry peers

DART rate
D 1 per 100 workers

Safer than 53% 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%).

TCR Δ

−6.0

2017→2023

Mike Diamond Plumbing, Inc. injury rate improved

Mike Diamond Plumbing, Inc.'s TCR fell 6.0 from 8.0 in 2017 to 2.0 in 2023. Peak filing year was 2017 at 8.0 TCR. In 2023, DART was 0.2× this establishment's average TCR (severity share of cases).

2017=8.0 · 2023=2.0

OSHA ITA Form 300A scorecard

Establishment book 238220 · Culver City, CA ABOVE-IND · MID

Grade D · TCR 5.0 · 179% of ind

  • DART 1.0 DART
  • RANK #364/594
  • PHOTO Empire HVAC
  • BOOK 2y book
  • INJ 12 inj
  • SIZE ~119 FTE

Nearest TCR peer: Empire HVAC (0.0 TCR gap)

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

Mike Diamond Plumbing, Inc. in the TCR neighbourhood

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

TCR

What this shows Mike Diamond Plumbing, Inc. averages 5.0 TCR (179% of the Plumbing and heating contractors BLS benchmark).

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

Mike Diamond Plumbing, Inc. TCR series: 2017=8 · 2023=2 · BLS 2.8

Where Mike Diamond Plumbing, Inc. falls in its industry

5,793 Plumbing and heating contracto establishments

Safer than 34% 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 #364 safest of 594 Plumbing and heating contracto employers in California.

Mike Diamond Plumbing, Inc. (119 employees, TCR 5.0) 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 Mike Diamond Plumbing, Inc.
Mike Diamond Plumbing, Inc. (119 employees, TCR 5.0) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Mike Diamond Plumbing, Inc. has more employees than the Plumbing and heating contractors median and a higher 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
2023 2.0 1.0 2 0 0
2017 8.0 1.6 10 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Culver City

5,793 Plumbing and heating contractors employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 94 employers in Culver City, 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 Empire HVAC 5.0 TCR
NAICS-TCR General Piping, Inc 5.0 TCR
NAICS-TCR The Waterworks, LLC dba-Atherton Plumbing 5.0 TCR
NAICS-TCR Climate Pros Kansas City 5.0 TCR
STATE-SIZE Fresh Prep, LLC 119 FTE
STATE-SIZE HM Clause - Cousteau 119 FTE
STATE-SIZE Booth Ranches LLC 119 FTE
STATE-SIZE Pyramid Flowers 119 FTE
CITY-NEAR Sony Pictures Entertainment 3,516 FTE
CITY-NEAR California Department of Transportation Facility 567 2,621 FTE
CITY-NEAR Culver City / Westside 1,282 FTE
CITY-NEAR 6017-Loc: CORP LOC - USA UNITED STATES - CULVER CITY 1,032 FTE
NAT-TCR Independent School District 676 5.0 TCR
NAT-TCR Ryder System, Inc 5.0 TCR
NAT-TCR El Mirage 5.0 TCR
NAT-TCR Forum Communications Printing - Detroit Lakes 5.0 TCR
NAT-SIZE Terrapin Beer Company-Athens 119 FTE
NAT-SIZE Plant 21 119 FTE
NAT-SIZE Assisted Living Inc 119 FTE
NAT-SIZE Mountain Projects, Inc. 119 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: 2023, 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.