Industry profile · NAICS 221320

Collection, treatment, and disposal of waste through a sewer system

Workplace injury rates across 437 OSHA-reporting establishments in this industry, 2016–2024. Average TCR uses the 400 establishments with a credible rate.

437
Employers
5.5
Avg TCR (rated)
1.2
BLS benchmark
6,559
Injuries (all)

TCR, interpreted

Far above average

5.5 avg TCR

The industry picture

According to OSHA ITA filings (2016–2024), Collection, treatment, and disposal of waste through a sewer system ranks #151 of 540 industries with at least 100 rated employers by average Total Case Rate (higher TCR = more injuries per 100 workers). The 400 rated employers in Collection, treatment, and disposal of waste through a sewer system average 5.5 recordable injuries per 100 workers, 4.6 times the BLS national benchmark of 1.2.

#151 of 540
corpus TCR rank · ≥100 rated
5.5
avg TCR · rated subset
1.2
BLS national benchmark
400
rated employers

ITA inventory (437) and injury totals cover every reporting establishment; the average TCR is the rated subset only. Corpus rank matches /rankings/most-dangerous-industries (≥100 rated employers). BLS IIF is a separate survey population, see Methodology → Three Populations.

Where Collection, treatment, and disposal of waste through a sewer system sits nationally on injury rate

Average Total Case Rate, industries with ≥100 rated employers

6 Around the middle lower TCR than 28% of 540 industries

Industries, banded by average TCR

Each bar is a band; taller bars hold more industries. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source OSHA Injury Tracking Application (2016–2024) · 2026-08-25

Collection, treatment, and disposal of waste through a sewer system injury rate, 2016–2024

Industry-average TCR has fallen across this span (7.1 → 4.6) · NAICS 221320

345678 201620172018201920202021202220232024 4.64
OSHA ITA employer_yearly, 2016-2024 · establishments with >=200,000 hours worked and a credible TCR each year (43 in the latest year shown)

What Collection, treatment, and disposal of waste through a sewer system Safety Data Reveals

According to OSHA's Injury Tracking Application (2016–2024), Collection, treatment, and disposal of waste through a sewer system ranks #151 of 540 industries with at least 100 rated establishments by rated-subset average Total Case Rate (same basis as the most-dangerous-industries ranking; higher TCR means more injuries). The Collection, treatment, and disposal of waste through a sewer system sector (NAICS 221320) encompasses 437 distinct employer establishments currently reporting to OSHA's Injury Tracking Application. Across this cohort, workers have logged 6,559 recordable injuries during the 2016–2024 reporting window. The industry-weighted average Total Case Rate (TCR) of 5.5 injuries per 100 full-time workers per year is computed on the 400 establishments with a credible rate (see methodology). Because OSHA's ITA mandates submission from establishments with 250+ employees plus all high-hazard industries at 20+ employees, this dataset represents a structural slice of U.S. workplace risk rather than a voluntary sample.

The Bureau of Labor Statistics publishes a separate national benchmark TCR of 1.2 for this NAICS code, derived from the BLS Survey of Occupational Injuries and Illnesses. Comparing the two, the ITA-reported rate of 5.5 is higher than the BLS benchmark, a gap that typically widens when the industry contains many large, high-exposure establishments required to file ITA reports. Employers in the table below are sorted so you can see how far individual establishments deviate from both the industry average and the national benchmark.

The practical value of industry-level safety data is threefold. First, jobseekers can gauge whether a prospective employer is better or worse than its industry peers, not just absolute injury counts, which tilt toward larger payrolls. Second, insurers and workers' compensation carriers use sector TCR as a baseline for experience-modification adjustments. Third, safety professionals benchmark their own programs against the cohort median. Use the grade-sorted employer list below to identify specific establishments within Collection, treatment, and disposal of waste through a sewer system that outperform or underperform the sector average, and click through to each record for year-by-year injury, illness, and fatality breakdowns.

Employers in this industry, by injury rate

Page 5 of 9
EmployerLocationGradeAvg TCR
COH Utilities Wastewater Reclamation FacilityHenderson, NVF4.3
Cedar CreekWantagh, NYF4.3
District of Columbia Water and Sewer AuthorityWashington, DCF4.3
VidaliaVidalia, GAF4.3
Union Sanitary DistrictUnion City, CAF4.3
West Basin, CAEl Segundo, CAF4.3
AlgomaAlgoma, WIF4.2
North Charleston Sewer District WWTPCharleston, SCF4.2
Utilities - Wastewater CollectionsChesterfield, VAF4.2
Delta DiabloAntioch, CAF4.2
Warner Robins ProjectWarner Robins, GAF4.2
Greater Owuachita Water Co.Monroe, LAF4.2
Mendenhall Wastewater Treatment PlantJuneau, AKF4.1
HastingsHastings, MNF4.1
Greenwood Metropolitan District - EFBF FacilityGreenwood, SCF4.1
Tifton ProjectTifton, GAF4.1
Regional UtilitiesSanta Rosa Beach, FLF4.0
Upper Occoquan Service Authority (UOSA)Centreville, VAF4.0
Hinesville ProjectHinesville, GAF4.0
Bay ParkEast Rockaway, NYF4.0
Mount Pleasant Waterworks MainMount Pleasant, SCF3.9
Rock Creek Wastewater Treatment PlantHillsboro, ORF3.9
Henry County Public Service AuthorityCollinsville, VAF3.9
Wellington Operations CenterManassas, VAF3.9
LFUCG - Water Quality - Town Branch Water Treatment PlantLexington, KYF3.9
Wastewater DivisionIndianapolis, INF3.9
Moccasin Bend Wastewater TreatmentChattanooga, TNF3.9
El Estero Water Resource CenterSanta Barbara, CAF3.8
The Jersey City Municipal Utilities AuthorityJersey City, NJF3.8
Western Lake Superior Sanitary DistrictDuluth, MNF3.7
East Bay Municipal Utility District - WastewaterOakland, CAF3.7
American Bottoms Regional Wastewater Treatment FacilitySauget, ILF3.6
Rock River Water Reclamation DistrictRockford, ILF3.6
Alvarado Labs - Public UtilitiesLa Mesa, CAF3.6
34-999340947-9Lawrenceville, NJF3.5
Water Pollution Control (WPC)Cedar Rapids, IAF3.5
Durham Wastewater Treatment PlantTigard, ORF3.5
Silicon Valley Clean WaterRedwood City, CAF3.4
Southern Iowa/Missouri RegionOmaha, NEF3.4
Wastewater Treatment Plant (WWTP)Asheboro, NCF3.4
MayodanMayodan, NCF3.4
Miller Environmental, Inc.Reading, PAF3.3
RialtoBloomington, CAF3.3
H2O innovation Operation & Maintenance LLC - UndineCypress, TXF3.3
North River Wastewater Treatment FacilityMt. Crawford, VAF3.3
Empire Wastewater Treatment PlantFarmington, MNF3.3
Regional Water Resource AgencyOwensboro, KYF3.2
Opelika ProjectOpelika, ALF3.1
Danville Sanitary DistrictDanville, ILF3.1
Renewable Energy FacilityAkron, OHF3.0
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Nationwide industries with similar injury rates or employer scale

Two PlainSafetyScore-derived peer sets for Collection, treatment, and disposal of waste through a sewer system: nearest NAICS cohorts by rated-subset average TCR and by OSHA-reporting employer inventory. These are cross-industry neighborhoods, not the employer list above.

Frequently Asked Questions

What is the average injury rate (TCR) in Collection, treatment, and disposal of waste through a sewer system?

Across 400 OSHA-reporting establishments with a credible rate, Collection, treatment, and disposal of waste through a sewer system averages 5.5 recordable injuries per 100 full-time workers per year (Total Case Rate, 2016-2024). The BLS national benchmark for this NAICS code is 1.2.

How does Collection, treatment, and disposal of waste through a sewer system compare with other industries nationally?

Collection, treatment, and disposal of waste through a sewer system ranks #151 of 540 industries with at least 100 rated employers by average TCR (highest TCR = #1, most dangerous). That places it above 28% of ranked industries by injury rate.

How many employers report in Collection, treatment, and disposal of waste through a sewer system?

437 establishments report to OSHA's Injury Tracking Application under this NAICS code, of which 400 have a credible enough filing history to carry a rated average TCR.

Data sourced from official public datasets, PlainSafetyScore's OSHA ITA / BLS-based industry database (2016-2024). Retrieved and formatted by PlainSafetyScore. See our methodology for details.

Working in Collection, treatment, and disposal of waste through a sewer system?

This sector averages 5.5 against a BLS benchmark of 1.2 - but individual employers span the full A-to-F range.

Sector figures use the credible-subset mean across reporting employers; a benchmark is not any single establishment's measured rate.

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.

Collection, treatment, and disposal of waste through a sewer system Safety FAQ

What is the average injury rate (TCR) in Collection, treatment, and disposal of waste through a sewer system?

Across 400 OSHA-reporting establishments with a credible rate, Collection, treatment, and disposal of waste through a sewer system averages 5.5 recordable injuries per 100 full-time workers per year (Total Case Rate, 2016-2024). The BLS national benchmark for this NAICS code is 1.2.

How does Collection, treatment, and disposal of waste through a sewer system compare with other industries nationally?

Collection, treatment, and disposal of waste through a sewer system ranks #151 of 540 industries with at least 100 rated employers by average TCR (highest TCR = #1, most dangerous). That places it above 28% of ranked industries by injury rate.

How many employers report in Collection, treatment, and disposal of waste through a sewer system?

437 establishments report to OSHA's Injury Tracking Application under this NAICS code, of which 400 have a credible enough filing history to carry a rated average TCR.