Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV COATING HOUSTON
2811 HOLMES RD, HOUSTON, TX, 77051
Parent company: NATIONAL OILWELL VARCO LP
Carcinogen
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | n-Butyl alcohol | Toluene | Phenol | Methyl ethyl ketone | Methyl isobutyl ketone | Total (lbs) |
| 2024 | 2,825 | 509 | 329 | — | 641 | 4,304 |
| 2023 | 3,894 | 1,654 | — | — | 1,661 | 7,209 |
| 2022 | 5,317 | 976 | 1,751 | — | 1,350 | 9,394 |
| 2021 | 3,130 | 1,013 | — | — | 855 | 4,998 |
| 2020 | 2,193 | 947 | — | — | 953 | 4,093 |
| 2019 | 1,429 | 2,386 | — | — | 2,886 | 6,701 |
| 2018 | 4,280 | 1,988 | — | — | 2,061 | 8,329 |
| 2017 | 3,400 | 1,183 | — | — | 1,726 | 6,309 |
| 2016 | 7,611 | 4,978 | — | — | 6,048 | 18,637 |
| 2014 | — | — | 5 | — | — | 10 |
| 2013 | 5 | 5 | 5 | — | 5 | 30 |
| 2012 | 5 | 5 | 5 | — | 5 | 35 |
| 2011 | 5 | 5 | 5 | — | 5 | 35 |
| 2010 | 5 | 5 | 5 | — | 5 | 35 |
| 2009 | — | 250 | — | — | 5 | 505 |
| 2008 | — | 250 | — | — | 750 | 1,250 |
| 2002 | 2,955 | 1,152 | 3,945 | 1,914 | 168 | 11,871 |
| 2001 | 3,699 | 1,373 | 4,645 | 2,595 | — | 14,405 |
| 2000 | 3,295 | 1,056 | 4,097 | 2,055 | — | 13,131 |
| 1999 | 2,100 | 580 | 2,600 | 1,300 | — | 8,150 |
| 1998 | 3,400 | 1,300 | 3,500 | 2,500 | — | 13,400 |
| 1997 | 2,552 | — | 2,793 | 880 | 280 | 8,249 |
| 1996 | 1,719 | — | 2,300 | 654 | — | 5,529 |
| 1995 | 1,721 | — | 1,398 | 789 | — | 4,967 |
| 1994 | 500 | — | 5,688 | 671 | 107 | 9,079 |
| 1993 | 500 | — | 1,290 | 500 | 500 | 4,290 |
| 1992 | 8,888 | 6,168 | — | 1,500 | — | 16,556 |
| 1991 | 10,120 | 10,354 | 500 | 500 | 500 | 23,474 |
| 1990 | 1,000 | 500 | 1,500 | 1,500 | 1,500 | 9,500 |
| 1989 | 1,750 | 750 | 500 | 7,875 | 2,375 | 15,000 |
| 1988 | — | 750 | — | 7,875 | 2,375 | 12,250 |
| 1987 | — | — | — | — | 2,375 | 2,375 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.