Water system storage tank and tower construction · California

DN Tanks

El Cajon, CA · ~576 workers · 5 years of OSHA Injury Tracking Application data.

C
Average Safety Record
2.4
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

DN Tanks runs at 87% of its industry's injury rate - about level with the typical Water system storage tank and tower construction workplace, earning a grade C.

DN Tanks: 2.4 TCR = 87% of Water system storage tank and tower construction BLS 2.8 · 5y Form 300A (see methodology below)

DN Tanks safety composite

DN Tanks scores strongest on total case rate (tcr) (safer than 58% of same-industry peers) and weakest on dart rate (safer than 52%), 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

54/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
C 2.43 per 100 workers

Safer than 58% of industry peers

DART rate
D 0.76 per 100 workers

Safer than 52% of industry peers

Fatalities
D 0

Safer than 52% 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

−3.1

2017→2021

DN Tanks injury rate improved

DN Tanks's TCR fell 3.1 from 4.2 in 2017 to 1.1 in 2021. Peak filing year was 2017 at 4.2 TCR. In 2021, DART was 0.31× this establishment's average TCR (severity share of cases).

2017=4.2 · 2018=3.0 · 2019=2.8 · 2020=1.2 · 2021=1.1

OSHA ITA Form 300A scorecard

Establishment book 237110 · El Cajon, CA AT/BELOW-IND · MID

Grade C · TCR 2.4 · 87% of ind

  • DART 0.8 DART
  • RANK #83/201
  • PHOTO Marietta Sand Corpor…
  • BOOK 5y book
  • INJ 60 inj
  • SIZE ~576 FTE

Nearest TCR peer: Marietta Sand Corporation (0.0 TCR gap)

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

DN Tanks in the TCR neighbourhood

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

TCR

What this shows DN Tanks averages 2.4 TCR (87% of the Water system storage tank and tower construction BLS benchmark).

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

DN Tanks TCR series: 2017=4.2 · 2018=3 · 2019=2.8 · 2020=1.2 · 2021=1.1 · BLS 2.8

Where DN Tanks falls in its industry

1,614 Water system storage tank and establishments

Safer than 58% of graded establishments in this industry, whose median TCR is 3.0.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #83 safest of 201 Water system storage tank and employers in California.

DN Tanks (576 employees, TCR 2.4) among 29 same-industry peers, split at the industry median of 54 employees and a TCR of 3.0 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 0200400600800 051015 Average employees Total Case Rate DN Tanks
DN Tanks (576 employees, TCR 2.4) among 29 same-industry peers, split at the industry median of 54 employees and a TCR of 3.0

DN Tanks has more employees than the Water system storage tank and tower cons median and a lower injury rate than the industry's median TCR of 3.0. 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
2021 1.1 0.8 7 0 0
2020 1.2 0.9 7 0 0
2019 2.8 1.9 16 0 0
2018 3.0 1.8 13 0 0
2017 4.2 3.2 17 1 0

OSHA ITA peer cross-reference

Establishment peer ledger

237110 · CA · El Cajon

1,614 Water system storage tank and tower construction employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 236 employers in El Cajon, 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 Marietta Sand Corporation 2.4 TCR
NAICS-TCR Office 2.4 TCR
NAICS-TCR Bronco Excavating, Inc 2.4 TCR
NAICS-TCR Mountain Cascade, Inc 2.4 TCR
STATE-SIZE T.R.S.C., Inc. 576 FTE
STATE-SIZE Infineon Temecula 576 FTE
STATE-SIZE Amazon.com Services LLC - LGB9 576 FTE
STATE-SIZE Ashley Furniture Industries - Redlands 576 FTE
CITY-NEAR SOUTHERN REGION : SDU 1,176 FTE
CITY-NEAR California Department of Transportation Facility 370 1,148 FTE
CITY-NEAR GKN Aerospace Chem-tronics 1,059 FTE
CITY-NEAR GKN Aerospace Chem Tronics 938 FTE
NAT-TCR Mechanical Partners, Inc. 2.4 TCR
NAT-TCR KIK Custom Products 2.4 TCR
NAT-TCR Regency Janitorial Service, Inc. 2.4 TCR
NAT-TCR BLCW 2.4 TCR
NAT-SIZE Milestone Electric 576 FTE
NAT-SIZE Renown Health Medical Groups/Urgent Care/Surgical Offices 530 + 800 576 FTE
NAT-SIZE WI Distribution Center 576 FTE
NAT-SIZE Hearth & Home Technologies 576 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: 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.