National Oilwell Varco Inc
4 facilities · 3 states · 494.7K lbs total releases
According to the EPA Toxics Release Inventory, National Oilwell Varco Inc is the reported parent of 4 Form R facilities across 3 states, disclosing 494.7K lbs of toxic releases. 3 of 9 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is California (332.2K lbs). Those TRI figures remain self-reported disclosure pounds for National Oilwell Varco Inc, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for National Oilwell Varco Inc: EPA TRI 2023 reporting year
Same facilities, both years
+3.3%
1 facilities that filed in 2022 and 2023
Whole inventory
+45.9%
103.8 thousand lb → 151.4 thousand lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- National Oilwell Varco Inc's total reported releases rose from 103.8 thousand lb in 2022 to 107.2 thousand lb in 2023, based on EPA TRI filings.
- National Oilwell Varco Inc's off-site transfers fell from 157 lb in 2022 to 0 lb in 2023, based on EPA TRI filings.
- National Oilwell Varco Inc's air releases rose from 103.6 thousand lb in 2022 to 107.2 thousand lb in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read National Oilwell Varco Inc from filing to facility
Largest Form R sites under this parent: Containment Solutions Inc; Containment Solutions Inc; National Oilwell Varco LP; National Oilwell Varco McAlester Works. Neighbor parents on the disclosure ladder: Clean Harbors Inc; Waste Management Inc. Largest disclosed chemicals by pounds: Styrene; Chromium compounds (except for chromite ore mined in the Transvaal Region); Manganese compounds; Nickel compounds; Chromium. Heaviest-reporting states in this extract: California; Oklahoma; Ohio. Industry labels on the parent rollup: Plastics and Rubber; Machinery. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Largest Form R sites under this parent: Containment Solutions Inc; Containment Solutions Inc; National Oilwell Varco LP; National Oilwell Varco McAlester Works. Neighbor parents on the disclosure ladder: Clean Harbors Inc; Waste Management Inc. Largest disclosed chemicals by pounds: Styrene; Chromium compounds (except for chromite ore mined in the Transvaal Region); Manganese compounds; Nickel compounds; Chromium. Heaviest-reporting states in this extract: California; Oklahoma; Ohio. Industry labels on the parent rollup: Plastics and Rubber; Machinery.
National Oilwell Varco Inc ranks #899 of 4,988 slug-merged TRI parents, a smaller disclosed-volume parent relative to the national Form R parent set. National Oilwell Varco Inc files across 3 states, a regional parent portfolio rather than a single-state discloser. National Oilwell Varco Inc's disclosed pounds are spread across 4 facilities, no single site dominates the parent total in this extract.
Parent aggregation for National Oilwell Varco Inc follows facility-reported names. Compare the named neighbors (Clean Harbors Inc; Waste Management Inc) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where National Oilwell Varco Inc sits among TRI parents
National Oilwell Varco Inc sits on a disclosure ladder beside Clean Harbors Inc and Waste Management Inc. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- Clean Harbors Inc · rank #897 · 52.2M lbs
- Waste Management Inc · rank #898 · 19.2M lbs
Largest chemicals disclosed by National Oilwell Varco Inc
Styrene; Chromium compounds (except for chromite ore mined in the Transvaal Region); Manganese compounds; Nickel compounds; Chromium lead the Form R pound rollup for this parent, including filings such as Containment Solutions Inc. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Styrene | 493.9K lbs |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 250 lbs |
| Manganese compounds | 250 lbs |
| Nickel compounds | 250 lbs |
| Chromium | 0 lbs |
Where does this company operate?
| State | Facilities | Total Releases |
|---|---|---|
| California | 1 | 332.2K lbs |
| Oklahoma | 2 | 161.7K lbs |
| Ohio | 1 | 750 lbs |
Facilities (4)
| Facility | Releases |
|---|---|
| Containment Solutions Inc Bakersfield, CA | 332.2K lbs |
| Containment Solutions Inc Tulsa, OK | 161.7K lbs |
| National Oilwell Varco LP Dayton, OH | 750 lbs |
| National Oilwell Varco McAlester Works Mcalester, OK | 0 lbs |
Frequently Asked Questions
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Compare beyond the release ladder
Nationwide peers by disclosed pounds & facility count
Cross-portfolio TRI parents nearest National Oilwell Varco Inc on total disclosed release pounds (494.7K lbs) and reporting facility count (4). Release-volume peers include Analog Devices Inc, Monosol, Strongwell Corp. Facility-count peers include A Stucki Holding Corp, Advanced Heat Treat Corp, Alleima USA LLC. Neighborhoods are forced disjoint so each axis surfaces a different set of parents.
Similar disclosed release pounds
Nearest parents (≥3 facilities, ≥10k lbs) by absolute TRI disclosed pounds, not rank-adjacent ladder neighbors.
Similar facility count
Nearest parents by reporting-site count (deduped against the release-pound neighborhood).
About This Data
EPA TRI parent totals cover all media. This extract's heaviest states for the parent are California, Oklahoma, Ohio; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with National Oilwell Varco Inc's TRI parent record
From National Oilwell Varco Inc, open Containment Solutions Inc or compare against Clean Harbors Inc rather than reading rank alone.
- Open the largest Form R site for National Oilwell Varco Inc (Containment Solutions Inc in CA). Largest facility
- Compare against Waste Management Inc, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where National Oilwell Varco Inc sits among all slug-merged TRI parents. All parent companies
Rank and peers (Clean Harbors Inc, Waste Management Inc) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
National Oilwell Varco Inc's record groups disclosed TRI parent-company filings so readers can compare reporting context without treating the total as a measure of risk.
Company release figures are computed directly from EPA Toxic Release Inventory data; source names and the record-linking method are documented in the methodology.
Primary sources
- EPA Toxics Release Inventory Basic Data Files - annual facility-level chemical-release disclosures
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.