Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers · Washington

4100 W Marginal Way SW

Seattle, WA · ~118 workers · 2 years of OSHA Injury Tracking Application data.

A
Excellent Safety Record
1.1
Avg TCR
2.2
Industry avg
0
Fatalities
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The verdict

4100 W Marginal Way SW runs at 48% of its industry's injury rate - far safer than the typical Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers workplace, earning a grade A.

4100 W Marginal Way SW: 1.1 TCR = 48% of Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers BLS 2.2 · 2y Form 300A (see methodology below)

4100 W Marginal Way SW safety composite

4100 W Marginal Way SW scores strongest on total case rate (tcr) (safer than 92% of same-industry peers) and weakest on fatalities (safer than 50%), 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).

C

70/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
A 1.06 per 100 workers

Safer than 92% of industry peers

DART rate
C 0.7 per 100 workers

Safer than 60% of industry peers

Fatalities
D 0

Safer than 50% 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

4100 W Marginal Way SW: 0.7 → 1.4 TCR

Peak year 2021 @ 1.4 TCR · DART/TCR 0.66× in 2021

4100 W Marginal Way SW's TCR rose 0.7 from 0.7 in 2020 to 1.4 in 2021. In 2021, DART was 0.66× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 423720 · Seattle, WA AT/BELOW-IND · MID

Grade A · TCR 1.1 · 48% of ind

  • DART 0.7 DART
  • RANK #1/15
  • PHOTO Englewood Winsupply …
  • BOOK 2y book
  • INJ 3 inj
  • SIZE ~118 FTE

Nearest TCR peer: Englewood Winsupply Co. (0.0 TCR gap)

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4100 W Marginal Way SW in the TCR neighbourhood

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

TCR

What this shows 4100 W Marginal Way SW averages 1.1 TCR (48% of the Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers BLS benchmark).

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

4100 W Marginal Way SW TCR series: 2020=0.7 · 2021=1.4 · BLS 2.2

Where 4100 W Marginal Way SW falls in its industry

853 Plumbing and Heating Equipment establishments

Safer than 92% of graded establishments in this industry, whose median TCR is 3.3.

More dangerous than peersSafer than peers

Narrower to Washington alone (the establishments it most directly competes with for workers and contracts): ranked #1 safest of 15 Plumbing and Heating Equipment employers in Washington.

4100 W Marginal Way SW (118 employees, TCR 1.1) among 29 same-industry peers, split at the industry median of 38 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 0100200300400500 051015 Average employees Total Case Rate 4100 W Marginal Way SW
4100 W Marginal Way SW (118 employees, TCR 1.1) among 29 same-industry peers, split at the industry median of 38 employees and a TCR of 3.3

4100 W Marginal Way SW has more employees than the Plumbing and Heating Equipment and Suppl 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
2021 1.4 0.7 2 0 0
2020 0.7 0.7 1 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

423720 · WA · Seattle

853 Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers employers nationwide with a credible TCR · 10,147 rated employers in Washington with headcount on file · 1,279 employers in Seattle, WA · 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 Englewood Winsupply Co. 1.1 TCR
NAICS-TCR Framingham 1.1 TCR
NAICS-TCR Ferguson Enterprises LLC: CA Moreno Valley - 16901 San Celeste St 1.1 TCR
NAICS-TCR TRITON STONE HOLDINGS, LLC 1.1 TCR
STATE-SIZE 547 118 FTE
STATE-SIZE Evergreen Concrete Cutting, Inc 118 FTE
STATE-SIZE Alexandria Moulding - Moxee 118 FTE
STATE-SIZE Olympia Container 118 FTE
CITY-NEAR UW Seattle 32,378 FTE
CITY-NEAR The United States of America 25,000 FTE
CITY-NEAR Starz Entertainment 25,000 FTE
CITY-NEAR UW Medical Center - Montlake and NW 11,307 FTE
NAT-TCR REG Geismar 1.1 TCR
NAT-TCR STL-SAFS 1.1 TCR
NAT-TCR 099 Indianapolis, IN 1.1 TCR
NAT-TCR Forum Energy Technologies - Fort Worth 1.1 TCR
NAT-SIZE Store 0264 118 FTE
NAT-SIZE Community Treatment Solutions 118 FTE
NAT-SIZE Heritage Manor - Chillicothe #137 118 FTE
NAT-SIZE SCP Tampa Plant 118 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. This is publicly available government data - not a legal determination of workplace conditions.
Data sourced from official public datasets. See our methodology for details.