wimby What's in my backyard?

EPA-regulated facilities in Johnson County, IA

There are 566 EPA-regulated facilities inside Johnson County, Iowa. The most common kinds are hazardous waste (240), drinking water systems (149), water discharge (117). 9 are currently in significant noncompliance, the EPA's designation for the most serious or persistent violations, and 37 have a violation on record. Penalties over the last five years total $5.7M across 4 sites.

Open the map of Johnson County

566facilities in the county
9in significant noncompliance
37with a violation on record
$5.7Min penalties, last 5 years

By category

CategoryFacilities
Hazardous waste240
Treatment, storage or disposal1
Large quantity generators4
Small quantity generators128
Transporters1
Chemical (RMP/TRI)27
Superfund7
Air emissions99
Major sources6
Synthetic minor sources41
Minor sources40
Water discharge117
Major permits5
Minor permits58
Drinking water systems149
Greenhouse gas reporters2
Data centers2
Scrap yards2
Recycling centers1

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

Data centers

Towns in Johnson 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.