Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NOV TEXAS OIL TOOLS/CTES CONROE
3770 POLLOK DR, CONROE, TX, 77303
Parent company: NATIONAL OILWELL VARCO LP
Carcinogen
PBT
— 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 | Toluene | Nickel | Copper | Chromium | Lead | Total (lbs) |
| 2024 | — | 232 | 641 | 118 | — | 1,000 |
| 2023 | — | — | 654 | — | — | 654 |
| 2019 | — | — | — | — | — | 1 |
| 2018 | — | 1,331 | 792 | 852 | — | 2,976 |
| 2017 | — | 418 | 181 | 437 | 221 | 1,257 |
| 2016 | — | 388 | — | — | 6 | 394 |
| 2013 | 15,102 | — | — | — | — | 15,102 |
| 2012 | 14,388 | — | — | — | — | 14,388 |
▎ 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.