Water treatment and distribution · California

Robert Diemer Filtration Plant

Yorba Linda, CA · ~77 workers · 6 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
5.2
Avg TCR
1.2
Industry avg
0
Fatalities
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The verdict

Robert Diemer Filtration Plant runs at 430% of its industry's injury rate - far more dangerous than the typical Water treatment and distribution workplace, earning a grade F.

Robert Diemer Filtration Plant: 5.2 TCR = 430% of Water treatment and distribution BLS 1.2 · 6y Form 300A (see methodology below)

Robert Diemer Filtration Plant safety composite

Robert Diemer Filtration Plant scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 17%), 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

35/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
D 5.16 per 100 workers

Safer than 41% of industry peers

DART rate
F 5.77 per 100 workers

Safer than 17% 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

−3.3

2017→2022

Robert Diemer Filtration Plant injury rate improved

Robert Diemer Filtration Plant's TCR fell 3.3 from 10.5 in 2017 to 7.2 in 2022. Peak filing year was 2017 at 10.5 TCR. In 2022, DART was 1.12× this establishment's average TCR (severity share of cases).

2017=10.5 · 2018=3.0 · 2019=2.9 · 2020=7.3 · 2021=0.0 · 2022=7.2

OSHA ITA Form 300A scorecard

Establishment book 221310 · Yorba Linda, CA ABOVE-IND · SMALL

Grade F · TCR 5.2 · 430% of ind

  • DART 5.8 DART
  • RANK #97/176
  • PHOTO District Office
  • BOOK 6y book
  • INJ 19 inj
  • SIZE ~77 FTE

Nearest TCR peer: District Office (0.0 TCR gap)

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

Robert Diemer Filtration Plant in the TCR neighbourhood

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

TCR

What this shows Robert Diemer Filtration Plant averages 5.2 TCR (430% of the Water treatment and distribution BLS benchmark).

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

Robert Diemer Filtration Plant TCR series: 2017=10.5 · 2018=3 · 2019=2.9 · 2020=7.3 · 2021=0 · 2022=7.2 · BLS 1.2

Where Robert Diemer Filtration Plant falls in its industry

727 Water treatment and distributi establishments

Safer than 41% of graded establishments in this industry, whose median TCR is 4.2.

More dangerous than peersSafer than peers

Narrower to California alone (the establishments it most directly competes with for workers and contracts): ranked #97 safest of 176 Water treatment and distributi employers in California.

Robert Diemer Filtration Plant (77 employees, TCR 5.2) among 29 same-industry peers, split at the industry median of 53 employees and a TCR of 4.2 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 0100200300 051015 Average employees Total Case Rate Robert Diemer Filtration Plant
Robert Diemer Filtration Plant (77 employees, TCR 5.2) among 29 same-industry peers, split at the industry median of 53 employees and a TCR of 4.2

Robert Diemer Filtration Plant has more employees than the Water treatment and distribution median and a higher injury rate than the industry's median TCR of 4.2. 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
2022 7.2 5.8 4 1 0
2021 0.0 0.0 0 0 0
2020 7.3 5.9 5 0 0
2019 2.9 2.9 2 0 0
2018 3.0 3.0 2 0 0
2017 10.5 4.5 6 1 0

OSHA ITA peer cross-reference

Establishment peer ledger

221310 · CA · Yorba Linda

727 Water treatment and distribution employers nationwide with a credible TCR · 51,834 rated employers in California with headcount on file · 53 employers in Yorba Linda, 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 District Office 5.2 TCR
NAICS-TCR Georgetown County Water and Sewer District 5.2 TCR
NAICS-TCR Water Distribution 5.2 TCR
NAICS-TCR Aqua Ohio, Inc. - Massillon 5.2 TCR
STATE-SIZE Innovative Produce, LP 77 FTE
STATE-SIZE Bokisch Vineyard Management 77 FTE
STATE-SIZE Bassman 77 FTE
STATE-SIZE COR Chico Business Office 77 FTE
CITY-NEAR California Department of Transportation Facility 803 917 FTE
CITY-NEAR 0445 - YORBA LINDA CA WHSE 309 FTE
CITY-NEAR 1697_3366 224 FTE
CITY-NEAR Vyaire Medical - Yorba Linda 218 FTE
NAT-TCR Price Cutter # 5 5.2 TCR
NAT-TCR Rite Hite Environmental Enclosures 5.2 TCR
NAT-TCR Delaware OH Manufacturing 5.2 TCR
NAT-TCR Tops #401 5.2 TCR
NAT-SIZE 1422 - Temple 77 FTE
NAT-SIZE 1267 - Crete 77 FTE
NAT-SIZE 1234 - Albany-GA 77 FTE
NAT-SIZE 1030 - Bryant 77 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: 2022, 2021, 2020, 2019, 2018, 2017. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.