Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
HYDRIL CO
302 MCCARTY ST, HOUSTON, TX, 77029
Parent company: HYDRIL CO
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 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | Manganese | Zinc compounds | Nickel | Aluminum (fume or dust) | Total (lbs) |
| 2024 | — | 41 | — | 31 | — | 74 |
| 2023 | — | 152 | — | 7 | — | 177 |
| 2020 | — | — | — | — | 24 | 24 |
| 2017 | — | — | 0 | — | — | 0 |
| 2015 | — | — | 0 | — | — | 0 |
| 2014 | 15 | — | 8 | — | — | 38 |
| 2013 | 184 | — | 97 | — | — | 281 |
| 2012 | 26 | — | 14 | — | — | 39 |
| 2011 | 17 | — | 9 | — | — | 26 |
| 2008 | 9 | — | 5 | — | — | 14 |
▎ 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.