wimby What's in my backyard?

EPA-regulated facilities in Walla Walla County, WA

There are 471 EPA-regulated facilities inside Walla Walla County, Washington. The most common kinds are water discharge (265), hazardous waste (157), drinking water systems (65). 28 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 40 have a violation on record. Penalties over the last five years total $1.6M across 5 sites.

Open the map of Walla Walla County

471facilities in the county
28in significant noncompliance
40with a violation on record
$1.6Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste157
Treatment, storage or disposal1
Large quantity generators3
Small quantity generators27
Transporters1
Chemical (RMP/TRI)15
Superfund4
Air emissions20
Major sources3
Minor sources4
Water discharge265
Major permits2
Minor permits228
Drinking water systems65
Greenhouse gas reporters4
Scrap yards2

A facility enrolled in several programs counts once in the total and once in each of its categories.

In significant noncompliance

The EPA's designation for its most serious or persistent violations, as of the latest data.

Largest penalties

Penalties assessed over the last five years.

Superfund sites

Towns in Walla Walla County

Bordering counties

Reading these numbers

These are regulatory records, not measurements of pollution. Most facilities appear because they hold a permit or file reports, and most of them are compliant; a listing is not a claim that a facility has polluted anything. Compliance status and penalties are the EPA's own determinations in data retrieved Oct 9, 2026. The Data page explains where each record comes from and how it can mislead.