National Oilwell Varco LP
31 facilities · 7 states · 2.6M lbs total releases
According to the EPA Toxics Release Inventory, National Oilwell Varco LP is the reported parent of 31 Form R facilities across 7 states, disclosing 2.6M lbs of toxic releases. 8 of 102 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is Texas (1.7M lbs). Those TRI figures remain self-reported disclosure pounds for National Oilwell Varco LP, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for National Oilwell Varco LP: EPA TRI 2023 reporting year
Same facilities, both years
-45.1%
20 facilities that filed in 2022 and 2023
Whole inventory
-41.4%
881.7 thousand lb → 516.9 thousand lb, every facility that filed
Between the two reporting years, 6 facilities 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 LP's total reported releases fell from 881.7 thousand lb in 2022 to 484.0 thousand lb in 2023, based on EPA TRI filings.
- National Oilwell Varco LP's off-site transfers rose from 5.5 thousand lb in 2022 to 32.5 thousand lb in 2023, based on EPA TRI filings.
- National Oilwell Varco LP's water releases rose from 36 lb in 2022 to 72 lb in 2023, based on EPA TRI filings.
- National Oilwell Varco LP's air releases fell from 876.2 thousand lb in 2022 to 451.4 thousand lb in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read National Oilwell Varco LP from filing to facility
Largest Form R sites under this parent: Nov Fiber Glass Systems - Containment Solutions; Nov Quality Tubing; Fiber Glass Systems LP; Lfm Giddings West. Neighbor parents on the disclosure ladder: US Steel Corp; Keystone-Conemaugh Projects LLC. Largest disclosed chemicals by pounds: Styrene; Methyl isobutyl ketone; Toluene; Nickel; n-Butyl alcohol. Heaviest-reporting states in this extract: Texas; Pennsylvania; Georgia. Industry labels on the parent rollup: Plastics and Rubber; Primary Metals; Machinery; Chemicals. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files Toxics Release Inventory (TRI) · August 2026
Largest Form R sites under this parent: Nov Fiber Glass Systems - Containment Solutions; Nov Quality Tubing; Fiber Glass Systems LP; Lfm Giddings West. Neighbor parents on the disclosure ladder: US Steel Corp; Keystone-Conemaugh Projects LLC. Largest disclosed chemicals by pounds: Styrene; Methyl isobutyl ketone; Toluene; Nickel; n-Butyl alcohol. Heaviest-reporting states in this extract: Texas; Pennsylvania; Georgia. Industry labels on the parent rollup: Plastics and Rubber; Primary Metals; Machinery; Chemicals.
National Oilwell Varco LP ranks #391 of 4,988 slug-merged TRI parents, a smaller disclosed-volume parent relative to the national Form R parent set. National Oilwell Varco LP spans 7 states in this extract, placing it among the broader national TRI parent footprints. National Oilwell Varco LP's disclosed pounds are spread across 31 facilities, no single site dominates the parent total in this extract.
Parent aggregation for National Oilwell Varco LP follows facility-reported names. Compare the named neighbors (US Steel Corp; Keystone-Conemaugh Projects LLC) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where National Oilwell Varco LP sits among TRI parents
National Oilwell Varco LP sits on a disclosure ladder beside US Steel Corp and Keystone-Conemaugh Projects LLC. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- US Steel Corp · rank #389 · 40.6M lbs
- Keystone-Conemaugh Projects LLC · rank #390 · 15.0M lbs
Largest chemicals disclosed by National Oilwell Varco LP
Styrene; Methyl isobutyl ketone; Toluene; Nickel; n-Butyl alcohol lead the Form R pound rollup for this parent, including filings such as Nov Fiber Glass Systems - Containment Solutions. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Styrene | 2.0M lbs |
| Methyl isobutyl ketone | 540.3K lbs |
| Toluene | 54.1K lbs |
| Nickel | 38.9K lbs |
| n-Butyl alcohol | 31.7K lbs |
Where does this company operate?
| State | Facilities | Total Releases |
|---|---|---|
| Texas | 22 | 1.7M lbs |
| Pennsylvania | 1 | 670.9K lbs |
| Georgia | 1 | 151.7K lbs |
| Oklahoma | 3 | 71.2K lbs |
| Washington | 1 | 48.7K lbs |
| Montana | 1 | 39.3K lbs |
| Louisiana | 2 | 224 lbs |
Facilities (31)
Frequently Asked Questions
How much pollution does National Oilwell Varco LP release?
How many facilities does National Oilwell Varco LP operate?
What industries and chemicals show up for National Oilwell Varco LP?
Does National Oilwell Varco LP release carcinogens?
Compare beyond the release ladder
Nationwide peers by disclosed pounds & facility count
Cross-portfolio TRI parents nearest National Oilwell Varco LP on total disclosed release pounds (2.6M lbs) and reporting facility count (31). Release-volume peers include Stm Inc, Nexeo Solutions Holdings LLC, G Holdings Inc. Facility-count peers include Enterprise Products Operating LLC, Holcim Participations (us), Stella-Jones US Holding Corp. 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 Texas, Pennsylvania, Georgia; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with National Oilwell Varco LP's TRI parent record
From National Oilwell Varco LP, open Nov Fiber Glass Systems - Containment Solutions or compare against US Steel Corp rather than reading rank alone.
- Open the largest Form R site for National Oilwell Varco LP (Nov Fiber Glass Systems - Containment Solutions in PA). Largest facility
- Compare against Keystone-Conemaugh Projects LLC, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where National Oilwell Varco LP sits among all slug-merged TRI parents. All parent companies
Rank and peers (US Steel Corp, Keystone-Conemaugh Projects LLC) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
National Oilwell Varco LP'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.