Plumbing contractors · California

Diablo Plumbing, Inc.

Name: Diablo Plumbing, Inc. Workplace Safety Data
Creator: PlainSafetyScore
License: https://creativecommons.org/publicdomain/zero/1.0/

Pleasanton, CA · ~120 workers · 2 years of OSHA Injury Tracking Application data.

Compiled by PlainSafetyScore · September 26, 2026

B
Good Safety Record: 1.8
Avg TCR: 2.8
Industry avg: 0
Fatalities

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The verdict

Diablo Plumbing, Inc. runs at 64% of its industry's injury rate - safer than the typical Plumbing contractors workplace, earning a grade B.

Diablo Plumbing, Inc.: 1.8 TCR = 64% of Plumbing contractors BLS 2.8 · 2y Form 300A (see methodology below)

Diablo Plumbing, Inc. safety composite

Diablo Plumbing, Inc. scores strongest on total case rate (tcr) (safer than 72% 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).

60/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR): C 1.79 per 100 workers

Safer than 72% of industry peers
DART rate: D 0.9 per 100 workers

Safer than 54% 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

Diablo Plumbing, Inc.: 0.0 → 3.6 TCR

Peak year 2018 @ 3.6 TCR · DART/TCR 0.5× in 2018

Diablo Plumbing, Inc.'s TCR rose 3.6 from 0.0 in 2017 to 3.6 in 2018. In 2018, DART was 0.5× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

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

Grade B · TCR 1.8 · 64% of ind

DART 0.9 DART
RANK #145/594
PHOTO Mechanical Service C…
BOOK 2y book
INJ 4 inj
SIZE ~120 FTE

Nearest TCR peer: Mechanical Service Company- North Little Rock (0.0 TCR gap)

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

This site

1.8
Mechanical Ser

1.8
Redlands Plumb

1.8
Farmer & Irwin

1.8
Afton

1.8

What this shows Diablo Plumbing, Inc. averages 1.8 TCR (64% of the Plumbing contractors BLS benchmark).

Diablo Plumbing, Inc. TCR series: 2017=0 · 2018=3.6 · BLS 2.8

Where Diablo Plumbing, Inc. falls in its industry

5,793 Plumbing contractors establishments

Safer than 72% of graded establishments in this industry, whose median TCR is 3.3.

Grade B

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #145 safest of 594 Plumbing contractors employers in California.

Diablo Plumbing, Inc. (120 employees, TCR 1.8) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Diablo Plumbing, 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
2018	3.6	0.9	4	0	0
2017	0.0	0.0	0	0	0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Pleasanton

5,793 Plumbing contractors employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 169 employers in Pleasanton, CA · 4 cross-state NAT-TCR peers · 4 cross-state NAT-SIZE peers. Closest matches by relationship code are listed below.

Rel	Establishment	Place	Metric
NAICS-TCR	Mechanical Service Company- North Little Rock	NORTH LITTLE ROCK, AR	1.8 TCR
NAICS-TCR	Redlands Plumbing, Heating and Air Conditioning, Inc.	REDLANDS, CA	1.8 TCR
NAICS-TCR	Farmer & Irwin Corp.	RIVIERA BEACH, FL	1.8 TCR
NAICS-TCR	Afton	EAST ALTON, IL	1.8 TCR
STATE-SIZE	Olympia Convalescent Hospital	LOS ANGELES	120 FTE
STATE-SIZE	Sierra Forest Products	TERRA BELLA	120 FTE
STATE-SIZE	OCCR OC Animal Care	TUSTIN	120 FTE
STATE-SIZE	6962-ABS-0029-0028-01394	ORCUTT	120 FTE
CITY-NEAR	California Department of Transportation Facility 138	Pleasanton	2,891 FTE
CITY-NEAR	California Department of Transportation Facility 624	Pleasanton	2,891 FTE
CITY-NEAR	Pleasanton Campus	Pleasanton	1,561 FTE
CITY-NEAR	Sciens Building Solutions LLC	Pleasanton	1,472 FTE
NAT-TCR	Residence inn Carmel	Carmel, IN	1.8 TCR
NAT-TCR	CHR- New Life Center	Putman, CT	1.8 TCR
NAT-TCR	GlenElston Nursing and Rehabilitation	Chicago, IL	1.8 TCR
NAT-TCR	Outagamie County	Appleton, WI	1.8 TCR
NAT-SIZE	Ridgeview Terrace	Rutledge, TN	120 FTE
NAT-SIZE	Tipper Tie Inc.	Apex, NC	120 FTE
NAT-SIZE	Gretz Beverage Montco Inc.	Hatfield, PA	120 FTE
NAT-SIZE	Glen Saint Andrew Living Community	Niles, IL	120 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: 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.