Plumbers · California

Ernest Ongaro and Sons

Petaluma, CA · ~131 workers · 2 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
9.7
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Ernest Ongaro and Sons runs at 347% of its industry's injury rate - far more dangerous than the typical Plumbers workplace, earning a grade F.

Ernest Ongaro and Sons: 9.7 TCR = 347% of Plumbers BLS 2.8 · 2y Form 300A (see methodology below)

Ernest Ongaro and Sons safety composite

Ernest Ongaro and Sons scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 1%), 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 9.71 per 100 workers

Safer than 11% of industry peers

DART rate
F 16.79 per 100 workers

Safer than 1% 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

Ernest Ongaro and Sons: 2.6 → 16.8 TCR

Peak year 2024 @ 16.8 TCR · DART/TCR 1.73× in 2024

Ernest Ongaro and Sons's TCR rose 14.2 from 2.6 in 2023 to 16.8 in 2024. In 2024, DART was 1.73× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Petaluma, CA ABOVE-IND · MID

Grade F · TCR 9.7 · 347% of ind

  • DART 16.8 DART
  • RANK #500/594
  • PHOTO Marriott Hotel
  • BOOK 2y book
  • INJ 36 inj
  • SIZE ~131 FTE

Nearest TCR peer: Marriott Hotel (0.0 TCR gap)

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

Ernest Ongaro and Sons in the TCR neighbourhood

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

TCR

What this shows Ernest Ongaro and Sons averages 9.7 TCR (347% of the Plumbers BLS benchmark).

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

Ernest Ongaro and Sons TCR series: 2023=2.6 · 2024=16.8 · BLS 2.8

Where Ernest Ongaro and Sons falls in its industry

5,793 Plumbers establishments

Safer than 11% 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 #500 safest of 594 Plumbers employers in California.

Ernest Ongaro and Sons (131 employees, TCR 9.7) 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 Ernest Ongaro and Sons
Ernest Ongaro and Sons (131 employees, TCR 9.7) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Ernest Ongaro and Sons has more employees than the Plumbers 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
2024 16.8 16.8 20 0 0
2023 2.6 1.9 16 11 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · CA · Petaluma

5,793 Plumbers employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 153 employers in Petaluma, 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 Marriott Hotel 9.7 TCR
NAICS-TCR Ohio Fabricators, Inc. 9.7 TCR
NAICS-TCR Solomon Plumbing Co 9.7 TCR
NAICS-TCR Applewood Plumbing, Heating and Electric 9.7 TCR
STATE-SIZE Babe Blosser Ranch 131 FTE
STATE-SIZE Dave Wilson Nursery 131 FTE
STATE-SIZE Gold Flora Corp 131 FTE
STATE-SIZE Land FLC 131 FTE
CITY-NEAR California Department of Transportation Facility 136 2,891 FTE
CITY-NEAR California Department of Transportation Facility 470 2,891 FTE
CITY-NEAR California Department of Transportation Facility 169 2,859 FTE
CITY-NEAR Solairus Aviation 1,400 FTE
NAT-TCR W.L. Roenigk, Inc. - Pittsburgh 9.7 TCR
NAT-TCR Tampa Bay Area Logistics, LLC 9.7 TCR
NAT-TCR Courtyard Crabtree Valley 9.7 TCR
NAT-TCR Njmto - Mount Olive 9.7 TCR
NAT-SIZE JW Marriott New Orleans 131 FTE
NAT-SIZE Renu, Inc. 131 FTE
NAT-SIZE VA019 Brookneal OSB 131 FTE
NAT-SIZE Lebanon in - 3283 131 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. 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.