Hawaiian Electric CO INC Waiau Generating Station
Total reported releases 232k lb fell meaningfully year over year (-29%). Total releases concentrations have fallen 14% since 2010.
475 KAMEHAMEHA HWY, Pearl City, Hawaii · 221112 · Electric Utilities · operated by Hawaiian Electric Industries INC
Notable Signals
No notable signals at this facility for the current reporting year. See chemicals and equity context below for the full picture.
What This Facility Releases
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations are roughly unchanged from 2010.
Ammonia
Ammonia concentrations are roughly unchanged from 2010.
Lead And Lead Compounds
Lead And Lead Compounds concentrations have more than doubled since 2010.
Polycyclic aromatic compounds
Polycyclic aromatic compounds concentrations have more than doubled since 2010.
Naphthalene
Naphthalene concentrations have more than doubled since 2014.
Benzo[g,h,i]perylene
Benzo[g,h,i]perylene volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Who Lives Next To This Facility
Within 3 miles of this facility (78 Census block groups, population-weighted demographics): a population of 108,042. 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.