EPA Air · stack tests by county and year

Air-emissions stack tests in Howard County, Indiana, 2026

• 17Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Howard County, Indiana during 2026. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Howard County facility page.

Air-emissions stack tests in Howard County, other years

• 2025 35
• 2024 34
• 2023 3
• 2022 39
• 2021 22
• 2020 14
• 2019 32
• 2018 38
• 2017 27

Air-emissions stack tests recorded in Howard County, Indiana, 2026

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.

What this page shows

This page covers Clean Air Act facilities in the EPA air register with stack tests in Howard county, IN, for 2026. It lists 17 stack tests recorded in 2026.