Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NATIONAL FLANGE & FITTING CO
4420 CREEKMONT DR, HOUSTON, TX, 77091
Parent company: NA
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 | Xylene (mixed isomers) | Manganese | Nickel | Chromium | Total (lbs) | |
| 2018 | — | 0 | — | — | 0 | |
| 2017 | — | 0 | — | — | 0 | |
| 2012 | — | 2 | — | — | 2 | |
| 2011 | — | 2 | — | — | 2 | |
| 2009 | 10,248 | 2 | — | — | 10,250 | |
| 2008 | — | 2 | — | — | 2 | |
| 2007 | — | 2 | — | — | 2 | |
| 2006 | 12,543 | 2 | 3 | — | 12,548 | |
| 2005 | 12,390 | 2 | 3 | 1 | 12,396 | |
| 2004 | 12,312 | 2 | 3 | 1 | 12,318 | |
| 2003 | 13,444 | 2 | 3 | 1 | 13,450 | |
| 2002 | 13,439 | 2 | 3 | 1 | 13,445 | |
| 2001 | 14,415 | 1 | 3 | — | 14,419 | |
▎ 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.