Total reported releases 1.1M lb rose meaningfully year over year (+16%). Total releases concentrations have more than doubled since 2017.
3550 180TH ST, Wever, Iowa · 325311 · Chemicals · operated by Koch INC
Nitrate compounds (water dissociable; reportable only when in aqueous solution) releases at Koch Fertilizer Wever LLC rose from 120k lb to 350k lb (2.9×) between 2023 and 2024.
N982 releases at Koch Fertilizer Wever LLC fell from 145k lb to 0 lb (100% lower) between 2023 and 2024.
N100 releases at Koch Fertilizer Wever LLC fell from 46k lb to 0 lb (100% lower) between 2023 and 2024.
Ammonia concentrations are up 59% since 2017.
Nitrate compounds (water dissociable; reportable only when in aqueous solution) concentrations have more than doubled since 2017.
Chlorine dioxide volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Formaldehyde concentrations have more than doubled since 2017.
Methanol concentrations have more than halved since 2022.
Nitric acid concentrations are up 20% since 2019.
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 824. Why we surface this →
Low-income
People of color
Under age 5
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.