There is a federal database that tells you, pound by pound, what the industrial facilities near your house released last year. It has existed since 1987. It is free, public, and searchable. Almost nobody looks at it, because in its native form it is a spreadsheet with 122 columns and 61,000 rows.
We mapped it to ZIP codes. Enter yours on the free report and you will see how many reporting facilities sit within five miles of you and how many pounds they reported. Here is how to think about that number.
The TRI came out of the 1984 Bhopal disaster, when a chemical release in India killed thousands and Americans realized they had no idea what was stored or released at the plant down the road. Congress passed a right-to-know law: facilities above certain size and chemical-usage thresholds must report annually, chemical by chemical, how much they release to air, discharge to water, and dispose of on land.
The data is self-reported and subject to EPA audit. It covers hundreds of chemicals. And crucially, it reports releases, not concentrations - the total mass leaving the facility, not what is in anyone's air or water.
This is the part that gets lost in scary headlines, and getting it right is the difference between useful information and free-floating dread.
A facility can report a very large tonnage that goes entirely into permitted deep-well injection thousands of feet underground, or into a lined and monitored landfill. That is a big number that reaches no one. Another facility can report a much smaller number that is entirely fugitive air emissions of a volatile solvent, half a mile upwind of a neighborhood. That is a small number that matters more.
Three things determine whether a release matters to you:
The pathway. Air releases travel and disperse, and they matter most within roughly the first mile or two. Water discharges follow the receiving stream, which may run away from you entirely. Land disposal is generally contained on site.
The chemical. A pound of a potent carcinogen is not a pound of ammonia. Your full report flags facilities whose releases include EPA-listed carcinogens for exactly this reason.
The distance and direction. A circle on a map is a crude proxy. Prevailing wind direction and terrain matter, which is why the honest framing is "here is what is reported nearby," not "here is your dose."
Mostly, yes. The majority of reported releases are within permit limits, which surprises people who assume reporting implies wrongdoing. The TRI is a transparency requirement, not an enforcement action.
That does not make it uninteresting. It makes it readable. Knowing that three permitted facilities within five miles reported 500,000 pounds last year is a legitimate fact about where you live, in the same way that knowing your county's radon zone is. It becomes actionable when you look at the trend and the chemicals, which the EPA's TRI Explorer shows for any facility by name.
Read the names. Your full report lists the largest reporters near you, their distance, and their top chemical by weight. Look any of them up in TRI Explorer to see the complete chemical list and, more importantly, the multi-year trend. A plant that cut releases 80% over a decade is a different neighbor than one that has been climbing.
Then cover the two pathways you can actually control. Your tap water report shows what reached your water system, which is the direct evidence for the water pathway. For air, a HEPA purifier and AirNow alerts on bad days handle the part of your exposure that is genuinely in your hands, and your county air quality page gives the broader picture.
And if a Superfund site turns up in the same report, that is a separate program with a different meaning - our Superfund guide explains the distinction.
Does a facility near me mean my air is polluted?
Not necessarily. TRI reports releases, not ambient concentrations. Whether anything reaches you depends on the pathway, chemical, distance, and wind. Your county's modeled air-quality numbers are a better proxy for what you actually breathe.
Why do some huge facilities not appear?
The TRI only covers facilities above certain employee-count and chemical-usage thresholds in covered industry sectors. Plenty of large operations, including many agricultural and service businesses, fall outside the program entirely.
What does the 1,000-pound floor mean?
We only count facilities that reported at least 1,000 pounds of total releases in the latest reporting year. Below that, the reporting is mostly incidental quantities, and including it would make almost every urban ZIP look identical.
Can I see the trend over time for a facility?
Yes, and it is the most useful view. EPA's TRI Explorer shows multi-year release histories by facility and by chemical, so you can see whether a plant is cleaning up or getting worse.