Distribution line, sewer and water, construction · Arizona
Tohono O O'dham Utility Authority
Sells, AZ · ~105 workers · 2 years of OSHA Injury Tracking Application data.
- A
- Excellent Safety Record
- 0.9
- Avg TCR
- 2.8
- Industry avg
- 0
- Fatalities
The verdict
Tohono O O'dham Utility Authority runs at 33% of its industry's injury rate - far safer than the typical Distribution line, sewer and water, construction workplace, earning a grade A.
- A
- Excellent Safety Record
- 0.9
- avg TCR · per 100 workers
- 2.8
- industry benchmark (BLS)
- 2
- recordable injuries tracked
Grade compares Tohono O O'dham Utility Authority's OSHA Total Case Rate of 0.9 to the Distribution line, sewer and water, construction BLS benchmark of 2.8 (33% of benchmark) across 2 years of Form 300A filings (2016–2024). <a href="/methodology">See methodology</a> for reporting-limitation caveats.
Injury rate over time
Tohono O O'dham Utility Authority's yearly Total Case Rate, against the 2.8 industry benchmark.
Where Tohono O O'dham Utility Authority falls in its industry
1,851 Distribution line, sewer and w establishmentsSafer than 78% of graded establishments in this industry, whose median TCR is 2.5.
Narrower to Arizona alone (the establishments it most directly competes with for workers and contracts): ranked #14 safest of 46 Distribution line, sewer and w employers in Arizona.
Trend analysis for Tohono O O'dham Utility Authority
Between 2016 and 2017, Tohono O O'dham Utility Authority's Total Case Rate improved from 0.9 to 0.9 recordable injuries per 100 full-time workers, a 5% decrease across 1 year of OSHA reporting.
The safest year on record was 2017, at a TCR of 0.9, while 2016 saw the highest rate, at 0.9, a spread of 0.1 points between the best and worst reporting years. That's a comparatively narrow spread, suggesting a fairly consistent safety record across the 2 years with a usable rate on file, rather than one outlier year skewing the multi-year average.
Summed across those 2 reporting years, Tohono O O'dham Utility Authority recorded 2 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 2-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 2 injuries shown on this page for Tohono O O'dham Utility Authority are sourced from its own 2 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 SearchSource: U.S. Department of Labor, OSHA Establishment-Specific Injury and Illness Data. NAICS 237110 - Distribution line, sewer and water, construction.
DART Rate, Transparent Calculation (2017)
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 ÷ 227,712 hours worked = 0.88 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Tohono O O'dham Utility Authority (this establishment) | 0.91 | OSHA ITA Form 300A, 2-year avg |
| Utility line (i.e., sewer, water), construction industry avg | 2.80 | BLS IIF, NAICS 237110 |
| Arizona state avg (all industries) | 4.73 | 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 Tohono O O'dham Utility Authority 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.
- 2017: 1 reportable incidents · 1 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2016: 1 reportable incidents · 1 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
Source: OSHA Inspection Information System (IMIS) - inspection case-number records
Year-by-Year Safety Data
| Year | TCR | DART | Injuries | Illnesses | Fatalities |
|---|---|---|---|---|---|
| 2017 | 0.9 | 0.9 | 1 | 0 | 0 |
| 2016 | 0.9 | 0.0 | 1 | 0 | 0 |
What this grade means for you
Use this grade as a relative read on Tohono O O'dham Utility Authority's reported OSHA injury record, strong versus its Distribution line, sewer and water, construction peers, but not a guarantee about any single site today.
- At 33% of the Distribution line, sewer and water, construction benchmark, Tohono O O'dham Utility Authority 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 Distribution line, sewer and water, construction 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 Tohono O O'dham Utility Authority's safety grade?
How many injuries has Tohono O O'dham Utility Authority reported?
Similar Employers
Matched by safety record across the industry, by workforce size within Arizona, and by nearby establishments in Sells - a different peer set than the category browse links below.
Similar TCR (~0.9)
Similar size (~105 workers)
Nearby in Sells
Read our methodology - how this data is sourced, computed, and verified.
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.