Plumbing and heating contractors · Washington

Mainstream Electric, LLC

Spokane Valley, WA · ~62 workers · 3 years of OSHA Injury Tracking Application data.

F
Failing Safety Record
5.9
Avg TCR
2.8
Industry avg
0
Fatalities
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The verdict

Mainstream Electric, LLC runs at 211% of its industry's injury rate - far more dangerous than the typical Plumbing and heating contractors workplace, earning a grade F.

Mainstream Electric, LLC: 5.9 TCR = 211% of Plumbing and heating contractors BLS 2.8 · 3y Form 300A (see methodology below)

Mainstream Electric, LLC safety composite

Mainstream Electric, LLC scores strongest on fatalities (safer than 51% of same-industry peers) and weakest on dart rate (safer than 22%), 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

32/100

Percentile-weighted across 3 of 3 measures

Total Case Rate (TCR)
F 5.92 per 100 workers

Safer than 28% of industry peers

DART rate
F 3.98 per 100 workers

Safer than 22% 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

Mainstream Electric, LLC: 4.2 → 8.0 TCR

Peak year 2022 @ 8.0 TCR · DART/TCR 0.67× in 2022

Mainstream Electric, LLC's TCR rose 3.8 from 4.2 in 2020 to 8.0 in 2022. In 2022, DART was 0.67× this establishment's average TCR (severity share of cases).

OSHA ITA Form 300A scorecard

Establishment book 238220 · Spokane Valley, WA ABOVE-IND · SMALL

Grade F · TCR 5.9 · 211% of ind

  • DART 4.0 DART
  • RANK #81/145
  • PHOTO BK Fire Suppression …
  • BOOK 3y book
  • INJ 12 inj
  • SIZE ~62 FTE

Nearest TCR peer: BK Fire Suppression & Security Systems (0.0 TCR gap)

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

Mainstream Electric, LLC in the TCR neighbourhood

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

TCR

What this shows Mainstream Electric, LLC averages 5.9 TCR (211% of the Plumbing and heating contractors BLS benchmark).

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

Mainstream Electric, LLC TCR series: 2020=4.2 · 2021=5.6 · 2022=8 · BLS 2.8

Where Mainstream Electric, LLC falls in its industry

5,793 Plumbing and heating contracto establishments

Safer than 28% 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 #81 safest of 145 Plumbing and heating contracto employers in Washington.

Mainstream Electric, LLC (62 employees, TCR 5.9) 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 Mainstream Electric, LLC
Mainstream Electric, LLC (62 employees, TCR 5.9) among 29 same-industry peers, split at the industry median of 60 employees and a TCR of 3.3

Mainstream Electric, LLC has more employees than the Plumbing and heating contractors 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
2022 8.0 4.0 6 0 0
2021 5.6 5.6 4 0 0
2020 4.2 4.2 2 0 0

OSHA ITA peer cross-reference

Establishment peer ledger

238220 · WA · Spokane Valley

5,793 Plumbing and heating contractors employers nationwide with a credible TCR · 10,147 rated employers in Washington with headcount on file · 176 employers in Spokane Valley, 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 BK Fire Suppression & Security Systems 5.9 TCR
NAICS-TCR HomeServe Brooklyn/Queens 5.9 TCR
NAICS-TCR MCS - MCS 5.9 TCR
NAICS-TCR 2608 West Liberty Office/Shop 5.9 TCR
STATE-SIZE Warren Morgan Orchards 62 FTE
STATE-SIZE Lewis County PUD - Main Office 62 FTE
STATE-SIZE Unimark Construction Group, LLC 62 FTE
STATE-SIZE Franklin PUD - Office 62 FTE
CITY-NEAR Kaiser Aluminum - Trentwood 851 FTE
CITY-NEAR Kaiser Trentwood 829 FTE
CITY-NEAR Trentwood 777 FTE
CITY-NEAR MultiCare Valley Hospital 776 FTE
NAT-TCR Stamford Ct Depot 5.9 TCR
NAT-TCR 0491 - Temecula Ca Whse 5.9 TCR
NAT-TCR NN, Inc. 5.9 TCR
NAT-TCR Community Center 5.9 TCR
NAT-SIZE Precision Fluorocarbon Inc 62 FTE
NAT-SIZE 4028-NV02 62 FTE
NAT-SIZE Brookwood Management Co LLC 62 FTE
NAT-SIZE American Precision Die Casting 62 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. 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.