EPA Air · stack tests by county, year by year

Air-emissions stack tests in Hamilton County, Iowa, year by year

• 29Stack tests

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every year on record for Hamilton County, Iowa, most recent first. Each year page lists the events recorded at sources in the county that year.

Hamilton County, Iowa, by year

• 2025 3
• 2024 4
• 2020 3
• 2019 3
• 2018 11
• 2017 5

All sources in Hamilton County →

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