401(k) · DOL Form 5500 · 2023

Clean Harbors Enviromental Services, Inc. 401(k) Plan

Data updated 2026-08-25

$1.1B
Total assets Very large vs avg
15,989
Participants Very large workforce
99th
Percentile by assets National rank
$67,446
Avg per participant Below avg balance/head
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Official DOL plan name: Clean Harbors Savings and Retirement Plan · Sponsored by Clean Harbors Enviromental Services, Inc. · Massachusetts · Utilities

$1.1B in assets, 15,989 participants

Clean Harbors Enviromental Services, Inc.'s Clean Harbors Savings and Retirement Plan reported $1.1B in total assets and 15,989 participants in its 2023 DOL Form 5500 filing, ranking in the 99th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #646 in Utilities (721 peers)

Coverage in Massachusetts

Clean Harbors Savings and Retirement Plan covers 15,989 participants in Massachusetts, 24x the typical Massachusetts plan (state average ~659 per filing). Assets: $1.1B.

#646
in Utilities (721 peers)
+20.4%
assets growth YoY
11×
vs typical plan assets (national mean)

Clean Harbors Savings and Retirement Plan's outsized position by total assets

Clean Harbors Savings and Retirement Plan vs every filed plan by assets

End-of-year total assets · plan year 2023 · DOL Form 5500

$1,078,387,539 Top 1% higher than 99% of 127,068 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2023

Clean Harbors Savings and Retirement Plan's mega-plan peer group by participant headcount

Plan-year 2023 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. Clean Harbors Savings and Retirement Plan is a mega filing (15,989 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2022 → plan year 2023

  • Clean Harbors Savings and Retirement Plan reported net income rose from -$175M in the plan year 2022 filing to $165M in the plan year 2023 filing.
  • Clean Harbors Savings and Retirement Plan end-of-year assets rose from $896M in the plan year 2022 filing to $1.1B in the plan year 2023 filing.
  • Clean Harbors Savings and Retirement Plan reported participants rose from 14,911 in the plan year 2022 filing to 15,989 in the plan year 2023 filing.

See the national 2022→2023 release diff →

EBSA filing schedule strip

Filing strip 042698999 · Clean Harbors Enviromental Services, Inc. PY 2023 · 401(k)

Clean Harbors Savings and Retirement Plan · $1.1B · 15,989 · 99th

  • VS-ST $1.1B
  • BOY 15,989
  • SCH 99th
  • EBSA 401(k)
  • PART near Teradata Savings Plan
  • TYPE ind #646

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Utilities retirement plans → · Plans in Massachusetts →

Clean Harbors Savings and Retirement Plan in the asset neighbourhood

Clean Harbors Savings and Retirement PlanClean Harbors Savings and Re…$1.1BTeradata Savings Plan$1.1BPaychex Pooled Employer 401(k) PlanPaychex Pooled Employer 401(…$1.1BThe US Oncology Clinical Practice 401(k) PlanThe US Oncology Clinical Pra…$1.1BKonica Minolta 401(k) Plan$1.1B
End-of-year total assets ($B) among Clean Harbors Savings and Retirement Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2023.

Massachusetts filing particulars

Total Assets (Beginning of Year)$896M
Net Assets (End of Year)$1.1B
Net Income$165M
Employer EIN042698999
Plan Effective Date1985-04-06
Filing StatusFILING RECEIVED

Sponsor Plan History (Clean Harbors Enviromental Services, Inc.)

Sponsor-wide plan assets over time

All Clean Harbors Enviromental Services, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$1.2B 38.94050822556323% vs 2022
2024 filing year
$0.8B$1B$1.2B$1.4B 202220232024 $0.9B $1.24B ▲ +37.8%
Year Plans Participants Total Assets
2022 1 14,911 $896M
2023 1 15,989 $1.1B
2024 1 17,223 $1.2B

Nearby 401(k) Plans in Massachusetts

Peer 401(k) plans, same state, same plan type, ranked by total assets.

Clean Harbors Savings and Retirement Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants Scatter plot of 6 data points. 020000400006000080000 -10010203040 Total assets ($B) Participants Clean Harbors Savings and Retirement Plan, Total assets ($B): 1.078387539 · Participants: 15989Clean Harbors Savings and Retirement PlanFidelity Retirement Savings Plan, Total assets ($B): 28.649852331 · Participants: 62289Fidelity Retirement Savings PlanLiberty Mutual 401(k) Plan, Total assets ($B): 10.556596852 · Participants: 37052Liberty Mutual 401(k) PlanMassachusetts Institute of Technology Supplemental 401(k) Plan, Total assets ($B): 6.829912863 · Participants: 14094Massachusetts Institute of Technology Supplemental 401(k) PlanBoston Scientific Corporation 401(k) Retirement Savings Plan, Total assets ($B): 5.786107181 · Participants: 19881Boston Scientific Corporation 401(k) Retirement Savings PlanPhilips North America 401(k) Plan, Total assets ($B): 5.779286156 · Participants: 19120Philips North America 401(k) Plan
Clean Harbors Savings and Retirement Plan vs. nearby 401(k) plans in Massachusetts, assets vs. participants
Compare Clean Harbors Savings and Retirement Plan side-by-side with 3 peers →

Scale composition for Clean Harbors Savings and Retirement Plan

Clean Harbors Savings and Retirement Plan reports $1.1B in end-of-year assets across 15,989 participants (0.009% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.017% of 93,925,755 covered participants) - about $67,446 per participant (49% of the national average assets-per-participant) . Net income for plan year 2023 was $165M.

This plan identity (EIN 042698999, plan #001) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $896M to $1.2B (+38.9%) while covered participants moved from 14,911 to 17,223 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 14,911 $896M Open filing
2023 15,989 $1.1B This page
2024 · index core 17,223 $1.2B Open filing

The same sponsor also keeps 1 other index-core plan on PlainRetire:

Clean Harbors Savings and Retirement Plan's out-of-state 401(k) peers by assets and headcount

Outside Massachusetts, the nearest 401(k) by assets is Teradata Savings Plan in CA ($1.1B); by covered participants it is Highmark Investment Plan in PA (15,996 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($1.1B here).

Similar participant headcount

Nearest other-state filings by covered participants (15,989 participants); asset peers above are excluded.

DOL Form 5500 plan year 2023. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did Clean Harbors Savings and Retirement Plan assets move in 2023? ▼
Clean Harbors Savings and Retirement Plan grew sharply - up 20.4% during 2023, from $896M to $1.1B. Reported net income was $165M.
How have Clean Harbors Enviromental Services, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), Clean Harbors Enviromental Services, Inc.'s sponsor-wide assets grew 38.9%, from $896M to $1.2B.
Where does Clean Harbors Savings and Retirement Plan rank by assets among Form 5500 filers? ▼
Clean Harbors Savings and Retirement Plan ranks in the 99th percentile by end-of-year assets among 127,072 plans that reported assets for plan year 2023 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to Clean Harbors Savings and Retirement Plan? ▼
Among 401(k) plans in other states, the closest by assets is Teradata Savings Plan in CA ($1.1B, 2,129 participants).
Which 401(k) plans cover a similar participant headcount to Clean Harbors Savings and Retirement Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Highmark Investment Plan in PA (15,996 participants, $2.5B in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2023.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 042698999.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.